Climate change in central Europe

27.06.2008 537 views
The number of weather-related natural catastrophes is on the increase in Europe. There is growing evidence that this trend is already due in part to climate change. The latest IPCC report confirms that the climate is changing. The mean global temperature is constantly rising. It has increased by 0.74°C in the last 100 years and by no less than 0.13°C per decade in the last 50 years – double the rate for the 100-year period as a whole. The rate of increase has been even more pronounced in Europe, with a rise of 0.95°C in the last 100 years, and as much as 1.0°C in Germany, 1.1°C in Austria and 1.4°C in Switzerland. The rise in temperature has been even more pronounced in the last few decades. Munich Re was one of the first companies in the finance sector to draw attention to the problem, pointing out in a 1973 publication on flooding that the growing losses might be due to human-induced climate change. The 2007 IPCC (Intergovernmental Panel on Climate Change) report confirms the statements and warnings we have issued over the last three decades: it is more than 90% probable that climate-changing trace gases released into the atmosphere by human activity are the primary cause of the global increase in temperature. The IPCC also confirms our analyses indicating that climate change is already causing a greater number and higher intensity of weather extremes. Climate change curbs economic growth Sir Nicholas Stern’s report on the “Economics of Climate Change”, published in October 2006, addressed the financial impact of climate change. It predicted a reduction in annual global growth of at least 5%, or US$ 2,200bn, by the middle of this century. The Stern Review forecasts that the costs will be limited to 1% of annual global gross domestic product (US$ 445bn) provided we take corresponding action. Such action would enable us to remain below the critical dividing line of a 2°C increase in global average temperatures compared with pre-industrial levels. This objective will only be achieved if CO2 eq concentrations can be stabilised at 445–535 ppm by 2050. Some increase is inevitable due to growing emissions from emerging countries such as China and India.

It is also crucial that we finance steps to adapt to climate change impacts that can no longer be prevented. The insurance industry has a key role to play in this by providing solutions to deal with the financial losses.

Insurance aspects Catastrophe losses have vastly increased for insurers in recent decades, five out of six natural catastrophes being triggered by weather extremes. These developments have prompted the need for a re-analysis of the risks posed by weather-related hazards in Europe. Increasing loss potential A winter storm can produce insured losses of over ?50bn in central Europe. However, events on a local scale should not be underestimated either. Hailstorm scenarios can cause billions of insured losses in major cities. At the same time, the vulnerability of insured property is increasing due to structural changes, the use of new materials, and the extension of cover. As a result of selective underwriting, insured losses from floods remain low in central Europe, but the loss potential is growing because of the higher incidence of heavy precipitation, the development of exposed areas, and increasing concentrations of values in the areas at risk. Scenarios involving more than one country are likely to produce losses of several billion euros. Despite global warming, extreme winters like that of 2005/2006 remain a possibility. Heavy snowfall and prolonged cold spells during which the snow accumulates could cause major losses – as in Austria in 2006, when the insured market loss came to a substantial 300m. Munich Re considers deductibles an effective means by which insurers can manage the risks, since the burden is more widely shared. Sublimits of up to 50% of the sum insured, on the other hand, are less efficient because, across the portfolio as a whole, they are much higher than the probable maximum loss Munich Re expects for natural hazards. However, sublimits can be useful when applied to individual risks. Hail and windstorm insurance penetration high Munich Re has examined various aspects of insurance in Germany, Italy, Austria, Switzerland, the Czech Republic, the Slovak Republic and Slovenia. Hail and storm insurance penetration in the central European countries reviewed is 80–100%, but the figure is generally much lower for flood risks. This is due to the fact that the storm and hail perils are often covered under the fire policy. Market penetration in Switzerland, where the insurance of natural hazard risks (except earthquake) is normally obligatory, is virtually 100%. In Austria, unlike the other countries analysed, the state has set up an emergency fund for exceptional natural hazard events, funded out of tax revenues. However, there is no legal entitlement to compensation. State coverage State help is primarily used to deal with flood risks and reduced agricultural yields. Reduced yields have increased insurers’ loss ratios considerably in some years, resulting in higher premiums for farmers. In central Europe, cover in Austria is among the most comprehensive. In addition to hail, policies also cover frost, windstorm, flood, drought, and prolonged rainfall at harvest time, premiums being subsidised by the state to the tune of 50%. The provision of blanket, state-subsidised multi-peril crop insurance necessitates a risk partnership between the agricultural sector, the insurance industry and the state. Transferring risk to the capital markets Alternative risk transfer methods are assuming greater importance, given the growing loss potential. The securitisation of catastrophe risks by the issue of catastrophe bonds on the capital markets has soared since Hurricane Katrina. In 2006, around US$ 5bn worth of catastrophe risk bonds were issued, twice as much as in 2005. In all, catastrophe bonds currently amount to around US$ 15bn. Experts believe that, in the medium term, 20% of catastrophe risk capacity will be placed on the capital markets. In addition, catastrophe risks are traded using insurance derivatives. Thus, companies can protect themselves in the short term against the financial consequences of exceptional weather factors. It is now also possible to place risks with lower return periods (25–30 years), following an initial phase in which mainly top-layer risks were securitised.

Munich Re uses catastrophe bonds to cover weather-related natural catastrophes (windstorm Europe, hurricane USA) and offers both insurance and derivative solutions tailored to the situation of the individual company. Munich Re’s Risk Trading Unit provides support and advice for clients on the transfer of risks to the capital markets.

Effects during the summer half-year Heatwaves
In the course of the 21st century, temperatures will continue to increase during the summer half-year: by 2.5–3.5°C in northern Germany, compared with the 1961–1990 average, and more than 3.5°C in southern Germany, the south-west Czech Republic, Austria, Switzerland, northern Italy and Slovenia. Many places will experience more heatwaves.
Scenarios for Upper Austria indicate heat periods (temperatures remain at or above approximately 30°C for a minimum of 20 days) every two years on average, compared with every 20 at present. There will also be significantly more dry periods – like heat periods, often associated with high-pressure conditions – in Upper Austria, Burgenland and Styria.
According to the results of climate research, Switzerland, the Czech Republic, the Slovak Republic, Hungary, northern Italy and Slovenia can also expect more periods of heat and drought. Precipitation
Total precipitation in the summer half-year will decrease, but some events could be more intense, so that rainfall will be distributed over a smaller number of occurrences.
One climate model shows that average July–September precipitation will be significantly less than in the period 1961–1990, the reduction being as much as 20–30% in parts of Austria, northern Italy, the Czech Republic, Switzerland and the Slovak Republic.
Conversely, 1% heaviest five-day summer precipitation will increase in parts of northern Italy and northern Switzerland and along a band comprising northern Austria and many parts of the Czech Republic, Poland and eastern Germany.
Models indicate that a warmer climate could mean fewer low-pressure rain systems forming in the northern Mediterranean basin due to central European trough conditions. However, those precipitation events could become more intense. Thunderstorms
The tendency towards thunderstorm formation, with the risk of hail, strong gusts, tornadoes, flash floods and lightening, will increase to a varying extent, depending on the region. This trend has been confirmed by observations in the Swiss plateau region and in southwest Germany, where it has been directly measured during the past 30 years.
The Swiss observations show that European weather conditions conducive to thunderstorms also became more frequent in the course of the 20th century. Consequently, local increases of this sort are also probable for other regions of central Europe, although difficult to substantiate at the present time. Climate models are still too approximate to indicate such effects in the projections. In the areas of northern Italy, Slovenia and southern Austria affected by moist air masses from the Adriatic, people will have to be prepared to deal with more severe thunderstorms bringing hail, heavy precipitation and strong gusts. West European trough conditions
Repeated bouts of extremely severe precipitation along the Mediterranean coast from southeast Spain to Italy and Slovenia cause floods between September and November. Torrential rain events in late summer and autumn are expected to become more frequent and intense in the Mediterranean countries. Munich Re
12.05.2021

A sustainable approach to integrated pest management

There is more scrutiny today than ever before regarding conventional herbicides, fungicides and insecticides, and regulations are tightening. “Complete replacement of synthetic chemistries is impractical,” said Nicholas Body, Alltech Crop Science (ACS) European technical manager. “The future of integrated pest management (IPM) programmes will include the best tactics from a variety of approaches, including nutritional and natural technologies, allowing the producers to reduce inputs while maintaining crop quality and improving sustainability measures.“ With today’s global trend among retailers to be very strict on chemical residues, building the best programme, including all type of technologies, is mandatory. “The use of predictive tools, such as disease models, and preventative, such as elicitors of natural defences, allows us to increase the quality of harvest with only a minimal use of conventional pesticides,” said Body. A balanced nutritional programme is a vital component of an effective IPM programme. “An unhealthy plant, from a nutritional standpoint, is not able to defend itself against a potential pathogen attack,” said Body. Healthy plants have a better chance of resisting disease pressures, and bioavailable micronutrients can support plants’ inherent defences. “If you trick a plant into thinking it’s going to be attacked, then the plant can develop its own metabolic pathways to fight the disease,” Body explained. However, plants are not naturally proactive. “They are reactive organisms,” continued Nicolas Body. “Something must trigger a reaction in a plant to be defensive, unlike an immune system that can react on its own. By using biologicals, such as nutritionals and activators, we can elicit a response in the plant.” Efficient crop management is moving towards a more proactive management of inputs. “We’ve been taught to scout fields, find what’s wrong and then fix it,” said Nicolas Body. “We’re moving to a new perspective where we can act on plant and soil health instead of acting on disease.” Better nutrient management, especially nitrogen, is a key component of this movement and is crucial to sustainability. The focus is to reduce the amount of fertiliser applied to fields and hopefully improve the environment by minimising the application of excess nitrogen. Many European farmers are faced with soils that have been depleted after many years in production. These cannot always provide a perfect balance between exported nutrients and the input fertilisation. With a loss in organic matter and beneficial microbes, the soil is also losing its capacity to act as a buffer. Fortunately, conservative and regenerative approaches to soil management are on the rise, and most farmers are implementing these techniques. Body agrees that a total-system approach will serve crop farmers best in the future. “We continue to research how and when to use biologicals — whether it’s natural activators, foliar micronutrients, natural inoculants or biofungicides — with conventional methods in cropping systems to help producers with environmental stewardship,” he explained. “As any market progresses, we see increasing management of smaller and smaller pieces of the total system.” Source - https://www.freshplaza.com

25.01.2021

Kenya - Insurtech startup raises $6M Series A to derisk smallholder farmers

Pula, a Kenyan insurtech startup that specialises in digital and agricultural insurance to derisk millions of smallholder farmers across Africa, has closed a Series A investment of $6 million. The round was led by Pan-African early-stage venture capital firm,  TLcom Capital, with participation from nonprofit Women’s World Banking. The raise comes after Pula closed $1 million in seed investment from Rocher Participations with support from Accion Venture Lab, Omidyar Network and several angel investors in 2018. Founded by Rose Goslinga and Thomas Njeru in 2015, Pula delivers agricultural insurance and digital products to help smallholder farmers navigate climate risks, improve their farming practices and bolster their incomes over time. Agriculture insurance has traditionally relied on farm business. In the U.S. or Europe with typically large farms, an average insurance premium is $1,000. But in Africa, where smallholding or small-scale farms are the norms, the number stands at an average of $4. It is particularly telling that the value of agricultural insurance premiums in Africa represents less than 1 percent of the world’s total when the continent has 17 percent of the world’s arable land. This disparity stems from the fact that the traditional method of calculating insurance through farm visits is often unaffordable for these smallholder farmers. Thus, they are often neglected from financial protection against climate risks like flood, drought, pestilence and hail. Pula is solving this problem by using technology and data. Through its Area Yield Index Insurance product, the insurtech startup leverages machine learning, crop cuts experiments and data points relating to weather patterns and farmer losses, to build products that cater to various risks. But getting farmers on board has never been easy, Goslinga told TechCrunch. According to her, Pula has understood not to sell insurance directly to small-scale farmers, because they can suffer from optimism bias. “Some think a climate disaster wouldn’t hit their farms for a particular season; hence, they don’t ask for insurance initially. But if they witness any of these climate risks during the season, they would want to get insurance, which is counterproductive to Pula,” said the founder in a phone call. So the startup instead partners with banks. Banks provide loans to farmers and make it compulsory for them to have insurance. With the loan, banks can pay the insurance on behalf of the farmers at the start of the season. But at the end of the season, the farmer has to repay the loan with interest. “The unit economics doesn’t work for us to work with farmers directly. But with banks, we know they provide loans to farmers with much better margins to pay for insurance. Also, we work together with government subsidy programs since they’re also interested in protecting their farmers.” Through its partnerships with banks, governments and agricultural input companies, Pula is at the center of an ecosystem that provides insurance to smallholder farmers and has amassed 50 insurance partners and six reinsurance partners. Its clientele includes the likes of the World Food Programme and Central Bank of Nigeria as well as the Zambian and Kenyan governments. Social enterprises like One Acre Fund, startups like Apollo Agriculture, and agribusiness giants like Flour Mills and Export Trading Group are also among Pula’s clients. Co-CEOs with agricultural backgrounds When Goslinga met Njeru in 2008, she worked for Syngenta Foundation for Sustainable Agriculture (SFSA). There, she started Kilimo Salama, as a micro-insurance program for more than 200,000 farmers in Kenya and Rwanda. She met Njeru who was the lead actuary at UAP Insurance, a partner to the Kilimo Salama program, at the time. After staying with Syngenta for six years and recognising the need to provide standard insurance products for smallholder farmers, Goslinga left to start Pula with Njeru in 2015. However, it wasn’t until two years later that Njeru joined fulltime as he had a six-year engagement with Deloitte South Africa from 2012 as a consultant actuary. The pair both act as co-CEOs. “When Thomas and I launched Pula in 2015, we had one goal in mind: to build and deliver scalable insurance solutions for Africa’s 700 million smallholder farmers,” Goslinga said. “With our latest funding, now is the time to break into new ground. In our five years since launching, we’ve built strong traction for our products. However, the fact remains that across Africa and other emerging markets, there are still millions of smallholder farmers with risks to their livelihoods that have not been covered.” According to Goslinga, the COVID-19 pandemic helped Pula double its footprint and size as rural farming activities and operations continued despite pandemic-induced lockdowns. Therefore, the new financing will scale up operations in its existing 13 markets across Africa, where it has insured over 4.3 million farmers. They include Senegal, Ghana, Mali, Nigeria, Ethiopia, Madagascar, Tanzania, Kenya, Rwanda, Uganda, Zambia, Malawi and Mozambique. Likewise, the Kenyan startup hopes to propel its expansion for smallholder farmers in Asia and Latin America. Pula is one of the few African startups disrupting the farming industry with technology. Its Series A investment attests that investors’ appetite for agritech startups is still on the rise. A week ago, Aerobotics, a South African startup that uses artificial intelligence to help farmers protect their trees and fruits from risks, raised a Series B round of $17 million. Last month, SunCulture, a Kenyan startup that provides solar power systems, water pumps and irrigation systems for small-scale farmers, raised $14 million. Another startup is Apollo Agriculture which raised $6 million Series A, akin to Pula. Not only did the pair raise the same round, Apollo Agriculture and Pula both deal with providing financial resources to smallholder farmers. But while both companies might look like competitors, even to the admission of Goslinga, she argues that the startups are partners and complement each other. As part of the new fundraise, TLcom’s senior partner Omobola Johnson will join Pula’s board. However, it was her colleague, Maurizio Caio, the firm’s managing partner, who had something to say about the round. “The potential for the insurance market for smallholder farmers in Africa is huge, and under the leadership of Rose and Thomas, Pula has rapidly established a strong presence throughout the continent and has several high-profile clients on their books. We are confident of Pula’s potential for growth in spite of the pandemic and look forward to partnering with them as they execute the next phase of their journey,” he said in a statement. For the lead investor, Pula’s investment marks the culmination of its busiest run of investments having led and co-led rounds in Okra, Shara, Autochek and Ilara Health within the past year. Christina Juhasz, CIO at Women’s World Banking, the other investor in the round, explained that the organisation cut a check for Pula “given the legions of women engaged in small-hold farming and securing the food supply for communities around the globe.” Source - https://techcrunch.com

22.01.2021

Africa - Advances in modeling and sensors can help farmers and insurers manage risk

When drought caused devastating crop losses in Malawi in 2015-2016, farmers in the southeastern African nation did not initially fear for the worst: the government had purchased insurance for such a calamity. But millions of farmers remained unpaid for months because the insurer's model failed to detect the extent of the losses, and a subsequent model audit moved slowly. Quicker payments would have greatly reduced the shockwaves that rippled across the landlocked country. While the insurers fixed the issues resulting in that error, the incident remains a cautionary tale about the potential failures of agricultural index insurance, which seeks to help protect the livelihoods of millions of smallholder farmers across the globe. Recent advances in crop modeling and remote sensing—especially in the availability and use of high-resolution imagery from satellites that can pinpoint individual fields—is one tool insurers that can help improve the quality of index insurance for farmers, report a team of economists and earth system scientists this week in Nature Reviews Earth & Environment. "The enthusiasm for agricultural insurance needs to be matched with an equally well-founded concern for making sure that novel insurance products perform and help, not hurt, farmers exposed to severe risk," said Elinor Benami, the lead social scientist of the review. The review was co-led by Benami, an assistant professor in Agricultural and Applied Economics from Virginia Tech, and Zhenong Jin, an assistant professor of Digital Agriculture at the University of Minnesota, and included Aniruddha Ghosh from the Alliance of Bioversity International and CIAT. The authors outline opportunities for enhancing the quality of index insurance programs to increase the value that index insurance programs offer to agricultural households and communities. "Improvements in earth observation are enabling new approaches to assess agricultural losses, such as those resulting from adverse weather," said Zhenong. Index insurance in agriculture triggers payments when certain environmental conditions—seasonal rainfall, for example—stray from thresholds for a typical harvest. Unlike policies that require costly and time-consuming field visits to assess claims, index insurance uses an indicator of losses to cover a group of farmers within a given geographical area. This approach offers the promise of inexpensive, quick coverage to many people who would otherwise be uninsured. Lack of other types of coverage is due, in part, to the cost involved in verifying small claims on the ground. As the Malawi case shows, verification is also an issue for index insurance but its potential for scale, speed, and low cost render it viable for both insurers and desirable for farmers. When well matched to local experiences, index insurance can have meaningful impacts on agricultural livelihoods. One study cited by the authors found that people insured under a Kenyan index insurance program reduced their "painful coping strategies" by 40-80% when compared to uninsured households. In non-technical terms, "painful coping strategies" for smallholder households include skipping meals, removing children from school, and selling off what little productive assets they have. "Shocks that destroy incomes and assets have been shown to have irreversible consequences," said Michael Carter, a co-author of the review and an agricultural economist at the University of California, Davis. "Families never recover from the losses and become trapped in poverty. By restoring assets and income destroyed by shocks, insurance can halt this downward spiral before it starts. This can fundamentally alter the dynamics of poverty." Insurance has been shown to push the poverty needle in the other direction. By protecting assets after bad seasons, insurance payments also build the confidence farmers have to invest in their farms and progress toward better wellbeing, secure in the knowledge they will not need to pursue painful coping if bad times fall. Despite a few decades of experimentation with the idea of index insurance, however, serious quality issues have plagued implementation on the ground and place the otherwise promising concept of index insurance itself at risk. "With the technology of remote sensing changing rapidly, we wrote this review to call attention to the quality problem and to highlight ways to harness those technological advances to solve that problem. Our immodest hope is that this article will make more, high-quality insurance products available to small-scale farmers across the globe," said Carter. Better models, coverage Governments and insurers in sub-Saharan Africa have enrolled millions of farmers in index insurance programs. Programs have met with varying degrees of success and generally focus on livestock, in part because weather-related losses on rangelands are relatively easier to quantify. The authors say enhanced satellite imaging can potentially increase coverage and include more cropland. But improving the effectiveness of insurance is a bigger goal. "We're trying to encourage the insurance community to move towards not just how many people you have enrolled but how many people you protected well when they suffered," said Benami. To that end, the researchers discuss a minimum quality standard in their review, which is akin to a medical doctor's oath to patients: A minimum quality standard is based on the premise of doing no harm to farmers. Poor insurance coverage can make farmers worse off than they otherwise would have been without insurance. "The criteria that insurance regulators have told us that they want is good value for money—meaning that farmers get effective risk reduction and asset protection for the premia that are paid," said Benami. "As we understand it, insurers are looking for ways to reduce cost and encourage uptake while meeting regulatory requirements for their roll-out." To improve the quality, reliability, affordability and accessibility of index insurance, the authors make five concrete recommendations in their study. First, the full potential of higher-resolution spatial data and new data products on environmental conditions should be explored. Many possibilities exist to wring more value from satellite data for index insurance—such as pairing data from multiple sensors and or with crop models—and examining those possibilities is a promising opportunity to improve the match between observation and experience on the ground. Second, several opportunities exist to help improve loss detection. For example, this can be done with better crop modeling and new data products enabled by remote sensing, such as higher resolution soil moisture indicators of 100-meter resolution. Additional data sources such as drones and smartphones can be incorporated. Insurers should focus on metrics of farmer welfare as the key objective in insurance design. Third, better on-the-ground data will help bolster the usefulness and quality of insurance programs. Ground-referenced data is essential to evaluate how well a given index relates to a farmer's reality, and strategically collected data on environmental conditions, crop types, and yields for the areas considered by insurance would help diagnose and improve insurance quality. Fourth, insurance zones can be optimized to better reflect the geographic, microclimatic, and crop-management conditions that influence the productivity of specific landscapes. Within large administrative boundaries, considerable variation can occur due to mountains, rivers and different social customs. Finally, contracts can be designed to accommodate a variety of needs and the inevitability of index failure. Farmers have different needs and a rigid insurance contract window may not always reflect the times of the year a farmer is most concerned about risk as it relates to their production strategies and location. In addition, secondary mechanisms—liked audits—can be put into place to minimize uncompensated losses that can be missed by index errors. In implementing these recommendations, the Alliance's Ani Ghosh notes the importance of interdisciplinary, researcher-practitioner collaborations. For example, "the advances in economic, remote sensing, and crop modeling led by academic institutions complement CGIAR's experience in targeting, prioritizing, and scaling out interventions for smallholder farmers that can maximize the impact of index insurance programs," Ghosh said. "Overall, evaluating and designing programs to successfully manage risk is a problem with both technical and social dimensions," the authors conclude. "Although index insurance instruments will not solve all agricultural risk-related problems, they offer a useful form of protection against severe, community-wide shocks when done well." Source - https://phys.org

08.01.2021

Understanding disease-induced microbial shifts may reveal new crop management strategies

While humanity is facing the COVID-19 pandemic, the citrus industry is trying to manage its own devastating disease, Huanglongbing (HLB), also known as citrus greening disease. HLB is the most destructive citrus disease in the world. In the past decade, the disease has annihilated the Florida citrus industry, reducing orange production for juice and other products by 72%. Candidatus Liberibacter asiaticus (CLas) is the microbe associated with the disease. It resides in the phloem of the tree and, like many plant pathogens, is transmitted by insects during feeding events. Disease progression can be slow but catastrophic. Symptoms begin with blotchy leaves, yellow shoots, and stunting, and progress into yield decline, poor quality fruit, and eventually death. Currently, the only thing citrus growers can do to protect their crops from HLB is control the insect vector. Dozens of researchers are trying to find ways to manage the disease, using strategies ranging from pesticides to antibiotics to CLas-sniffing dogs. Understanding the plant microbiome, an exciting new frontier in plant disease management, is another strategy. Dr. Caroline Roper and first author Dr. Nichole Ginnan at the University of California, Riverside led a large research collaboration that sought to explore the microbiome's role in HLB disease progression. Their recent article in Phytobiomes Journal, "Disease-Induced Microbial Shifts in Citrus Indicate Microbiome-Derived Responses to Huanglongbing," moves beyond the single-snapshot view of the microbial landscape typical of microbiome research. Their holistic approach to studying plant-microbe interactions captured several snapshots across three years and three distinct tissue types (roots, stems, and leaves). What is so interesting about this research is the use of amplicon (16S and ITS) sequencing to capture the highly intricate and dynamic role of the microbiome (both bacterial and fungal) as it changes over the course of HLB disease progression. Ginnan et al. surmised that HLB created a diseased-induced shift of the tree's microbiome. Specifically, the researchers showed that as the disease progresses, the microbial diversity increases. They further investigated this trend to find that the increase in diversity was associated with an increase in putative pathogenic (disease-causing) and saprophytic (dead tissue-feeding) microbes. They observed a significant drop in beneficial microbes in the early phases of the disease. Arbuscular mycorrhizal fungi (AMF) were one such beneficial group that the authors highlighted as showing a drastic decline in relative abundance. The depletion of key microbial species during disease might be opening the door for other microbes to invade. Certain resources may become more or less available, allowing different microbes to prosper. Dr. Roper and Dr. Ginnan hypothesize that when HLB begins, this depletion event triggers a surge of beneficial microbes to come to the aid of the citrus tree. They suspect that the microbes are initiating an immune response to protect the host. As the disease proliferates, the citrus tree and its microbiome continue to change. Dr. Ginnan, the lead author on this study, found that there was an enrichment of parasitic and saprophytic microorganisms in severely diseased roots. The enrichment of these microbes may contribute to disease progression and root decline, one side effect of HLB. Survivor trees, or trees that did not progress into severe disease, had a unique microbial profile as well. These trees were enriched with putative symbiotic microbes like Lactobacillussp. and Aureobasidium sp. This discovery led the researchers to identify certain microbes that were associated with slower disease progression. Dr. Ginnan says their "aha" moment during the research was in the data analysis. "Originally we were looking for taxa that increased and decreased in relative abundance as disease rating increased," she said. "Our differential abundance analysis ended up revealing clear enrichment patterns replicated in multiple taxa." This is the moment they began to develop the individual patterns they were seeing into a broader disease model. This research is the foundation for future projects and collaborations that the authors are excited to continue to develop. They are motivated by the potential function of the microbiome to manage crop diseases. In the near future, they hope that these discoveries and an understanding of beneficial microbes can help establish a microbiome-mediated treatment plan to protect crops from diseases like HLB. In addition, the model they've developed can be applied to understanding diseases of other tree crop systems. Source - https://www.eurekalert.org

24.03.2020

Canada - Sask. anticipates spending less on business risk programs

The Saskatchewan budget scheduled for March 18 turned out to be a non-event as the Legislature shut down amid COVID-19 concerns. Earlier that day the government announced a spending plan of $14.15 billion, but couldn’t say how much the virus will cost the health system or how much revenue the province could expect to take in. Finance minister Donna Harpauer said the province has access to $1.3 billion in cash if needed. Premier Scott Moe said the government would provide the funding needed to fight the pandemic. Cabinet will require special warrants to get money out of the door. Of the total, the agriculture ministry will see spending drop by $22 million or almost six percent to nearly $369 million. The major decrease comes in business risk management spending, which is always based on federal forecasts. The estimates project $15.8 million less spending for AgriStability and $15.9 million less on crop insurance premiums. Agriculture Minister David Marit said the federal forecasts were done in December. “It is important to note that business risk management spending is government by federal-provincial agreements and the amount that we spend in any one year is impacted by commodity prices and program participation,” he said through an emailed statement. “We recognize that the markets are very volatile and those spending forecasts will be adjusted through the year.” One area that will see some additional spending is irrigation development. Marit said $5 million will be used to conduct additional analysis of the potential, including a study of the Westside Irrigation and Qu’Appelle South Irrigation projects. Part of that work will include land identification and soil suitability assessments. “It is too early to indicate the costs required to build irrigation infrastructure,” he said. Marit added that investment from the federal government and the private sector would be required to develop the infrastructure. Source - https://www.producer.com

23.10.2019

Managing frost damage on late-season corn for silage

Late corn plantings and cool autumn temperatures create a recipe for frost damage on corn grown for silage. The extent of the frost damage on the corn depends on the temperature, duration of the temperature, and corn growth stage at the time of the frost. Conditions for a frost Air temperatures below 32°F for four to five hours will result in frost damage to the stalk, leaf, and husk. Air temperatures that drop to 28°F for a few minutes and return to 32°F can result in similar injury. Air temperatures between 32°F and 40°F typically result in less frost damage. Frost at temperatures above 32°F usually occurs under conditions of clear skies, low humidity, and no wind. These conditions are ideal for rapid heat loss from the corn leaves. Under these conditions, temperature of the corn leaves can be less than the air temperature. Thin stands of corn and corn stands at the edges of fields are more likely to receive frost damage at temperatures above 32°F than thicker stands and the centers of fields. The uppermost leaves of the corn plant are most susceptible to frost damage at temperatures between 32°F and 40°F. Growth stage at time of frost Management of corn damaged by frost will depend on the stage of growth at the time of frost. Corn will ensile well at moisture levels less than 70% for upright silos and less than 75% moisture for horizontal silos. Corn harvested at 62% to 68% moisture (late-dent stage) is ideal for ensiling. Frost damage prior to the late-dent stage will result in corn that is too moist for silage harvest. Frost at these higher moistures will reduce yields and may reduce quality. Management of corn damaged by frost will depend on the stage of growth at the time of frost. (Photo: Courtesy of University Kentucky) Corn moisture content can be determined with a microwave or forage moisture tester. A simple field technique for determining corn moisture content is to squeeze a ball of chopped corn forage in your hand for 30 seconds. Release the ball of chopped forage and examine its shape. You can gain a rough estimate of moisture content based on the descriptions in Table 2. If you would prefer to not use the silage chopper to help determine whole plant moisture, then you can use a tobacco or corn knife to chop several corn plants. Be careful to chop up the corn plants into pieces that are similar in size to those cut by the silage chopper. Frost at Milk Stage When a frost occurs on corn at the milk stage, the moisture content of the plant is too high for proper ensiling. The leaves of the plant will dry very quickly, which causes the entire plant to appear to be drying more quickly. However, the entire plant will dry down similarly to corn that was not injured by frost. If the corn at milk stage is ensiled immediately after frost, then nutrients will leach away, the silage will be sour and wet, and livestock consumption will be low. Waiting to harvest frost-damaged corn at the milk stage will improve silage quality but will decrease dry matter yield. Up to 10% dry matter losses will occur the first 10 days after the frost, and up to 20% dry matter will be lost 40 days after the frost. In addition, mold may develop in the ears and cause further yield reductions. Because of these factors, a compromise between dry matter yield and ideal ensiling moisture must be made. In some cases, the corn will need to be harvested when it is too wet for silage. In these situations, chopped grain, hay, or straw can be added to the silage to decrease overall moisture. In general, 30 pounds of dry matter per ton of silage are required to reduce the moisture percentage by one point. For example, if the corn was at 78% moisture and the target moisture was 68%, then 300 pounds of dry matter would be required for each fresh ton of silage. One concern of frost occurring at the milk stage is high nitrate levels. High nitrate levels are toxic to cattle and will occur most frequently when the corn has been under drought stress prior to the frost. Ensiling will reduce nitrate levels 40% to 60%. To reduce the risk of nitrate toxicity, allow the ensiling process to occur for at least 21 days before feeding. See ID-86, Using Drought-Stressed Corn: Harvesting, Storage, Feeding, Pricing, and Marketing, for more information on nitrate levels in corn. Another option for corn with high moisture content is to feed the corn as green-chop. Cattle will consume less green-chop corn than ensiled corn. However, the quality of the frost-damaged, green-chopped corn is better than the quality of the ensiled corn at milk stage. If the corn is to be fed as green-chop, then check the corn for nitrate levels before feeding. A diagnostic test is available for determining nitrate levels, which is usually available through your county Extension office. Frost at Dough Stage If a frost occurs when the corn is at the dough stage, then whole corn is often too wet for silage harvest. Typically, several drying days are necessary before whole corn will be at the proper moisture for silage harvest. The corn should be harvested as soon as it reaches the desired moisture of 70% to 75%. The balance between waiting to harvest corn for silage at the ideal moisture and harvesting to prevent yield loss still must be considered. However, corn damaged by frost during the dough stage will require less time to dry down than corn damaged during the milk stage. If a frost occurs when corn is at the early dent stage, then whole corn may need to dry a couple days before it is ready to harvest. (Photo: Colleen Kottke/Wisconsin State Farmer) Frost at the Dent Stage If a frost occurs when corn is at the early dent stage, then whole corn may need to dry a couple days before it is ready to harvest. If a frost occurs when the corn is at the mid- to latedent stage, whole corn is at or very close to ideal moistures for ensiling. Corn damaged by frost at the mid- to late-dent stage should be harvested for silage immediately because whole plant moisture should be close to ideal for harvest and waiting to harvest could cause yield reductions. Summary Management of frost damage to corn grown for silage depends in part on the stage of growth when the frost occurred. Corn in the milk and dough stages is too wet for chopping and ensiling. The corn plants need to dry down before chopping occurs. Waiting to harvest frost-damaged corn will improve silage quality but will decrease dry matter yield. Producers must balance between expected yield losses and quality gains by waiting to harvest. Source - https://www.wisfarmer.com

17.10.2019

New Zealand - Fans get to work as spring frosts threaten precious grapes

Vineyard frost fans have been doing their bit to protect one of Marlborough's biggest money spinners after a few cold starts in October. The fans, which pull warm air down onto the vines, are used when grapes start to bud - as a spring frost can lead to crop loss. Blenheim experienced four frosts in the first week of October, while all of October 2018 had only two frosts. But Marlborough Plant and Food research scientist Rob Agnew suspected frost fans would have been used more out in the Wairau Valley because of its colder climate. Villa Maria viticulturist Stuart Dudley said because Marlborough was a cool climate viticulture region there were definitely areas that were exposed to spring and autumn frosts. "The fans work by effectively bringing down warmer air," Dudley said. "It's called an inversion layer, effectively it's the same principle that is used by helicopters to protect the crops, but wind machines are a lot more reliable. "For us, as viticulturists, the wind machines are great, because if you get a forecast saying it might get to zero [degrees Celsius] and then you would have to toss up whether to spend the money on helicopters or not, whereas if you've got a frost fan the decision is already made, you just have to flick it on." Most were automatic, with a start temperature just above zero, but some grapegrowers had started switching from two-bladed fans to four or five, which were quieter, Dudley said. A Neighbourly poll showed 50 per cent of respondents who lived next to a vineyard were used to the sound. However, 17.3 per cent of respondents said they struggled to sleep at night because of the sound. Hawkesbury resident Nigel Taylor said noise from frost fans was something "you get used to". "You hear the two-bladed ones more than those with four or five," Taylor said. "You can definitely hear them but they don't interrupt us, you learn to live with it. "They're temperature-controlled so you notice when they turn off too, it's not a major disruption." Jenny King said rural residents knew living next to a vineyard could come with some noisy nights. "It's a small price to pay," King said. "It doesn't make for a great mood the next day but it's one of those things." King said she tended to hear the helicopter from the cherry orchards in Springlands more. Marlborough resident Ben Wallace said the fans were "minimally disruptive". "The benefits of frost fans for the local economy far outweigh the noise you have to put up with," he said. Source - https://www.stuff.co.nz

05.09.2019

USA - Northern NY apple research tests hail netting as pest management[:ru]US

Real-time, regional, in-orchard research funded by the Northern New York Agricultural Development Program is helping apple growers quickly respond to pests with the latest management practices, the organization said. "Pest management is one of the largest investments fruit growers must make in terms of time, labor, and materials to produce marketable fruit and maintain healthy trees," says Michael Basedow, a tree fruit specialist with the Cornell Cooperative Extension Eastern NY Commercial Horticulture Program, Plattsburgh, N.Y. With a grant from the Northern New York Agricultural Development Program, Basedow provided weekly pest scouting data to help growers quickly respond to orchard pests with appropriate pest management tactics. He also initiated a project to evaluate whether exclusion netting used for protecting apple from hailstorm damage might also protect the fruit from orchard pests. A series of hailstorms in 2017 damaged the regional apple crop. One grower reported more than 60 percent of his acres suffered damage. Basedow says, "Growers selling hail-damaged fruit for juice that would otherwise have sold at retail prices can see as much as a 98 percent decrease in the economic value of their crop." Basedow worked with commercial growers in Clinton and Essex counties who had installed hail netting. Trials in France and Quebec, Canada, had shown success in limiting damage by codling moth and other orchard pests, but the use of drape-style netting had not been well-evaluated under northern NY orchard conditions. Employees at a Clinton County orchard install hail netting to a row of apple trees. Photo: A. Galimberti, CCE Clinton County, NY "We are constantly looking at ways to increase the use of integrated pest management practices that allow us to produce a commercially viable crop while also making the best use of growers' time, labor, and money. We wanted to see if the hail netting might be an effective practice to add to our apple growers' IPM toolbox," Basedow said. The research provided weekly trap data on four key apple pests in northern NY: codling moth, Oriental fruit moth, obliquebanded leafrooler, and apple maggot. "Results from the trial showed that traps in the trees under the netting caught significantly fewer of the four key pests compared to the unnetted trees, however," Basedow says, "the pest pressure levels in 2018 for three of the four key pests was such that the feasibility of using hail netting for pest exclusion is still uncertain. The netting may help reduce pest numbers enough to reduce the total number of orchard sprays needed for some pests, such as apple maggot, where spray decisions are based on well-established economic thresholds." Basedow adds that the sites with the most effective pest exclusion were those where the hail netting was tightly tied to the lower limbs and trunks of the apple trees. The orchard with the best control applied the netting to trees grown to a tall spindle training system with the netting secured tightly to the trunks. Source - https://www.freshplaza.com