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    By Fredrique Achieng’

    The Center for Agriculture and Bioscience International (CABI) a leading plant science research organization, has launched a farmer education program to help farmers in Coastal Kenya fight against the Papaya Mealybug, a pest that causes 56% to 91% in yield losses.

    The campaign dubbed “Taking to the Airwaves” is funded by the Darwin Initiative and CABI Plantwise aims to educate farmers on IPM ways to mitigate the pest across three major producing counties Kwale, Kilifi & Mombasa.

    According to a report by Horticulture Crops Development Authority (HCDA), papaya is the 5th most important fruit both for the export and local market earning farmers Sh2.2bn in 2016. However, management of the pest has continued to be a problem for farmers CABI.

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    The climatic conditions in Kenya make it possible for the pest to exist in almost half of the country with Kwale losing at least 60% of its produce dropping from 20,005 to 6,248 between 2017 and 2018,” said MS Gauko, Development Communication Specialist CABI Kenya.

    The pest, native to Central America, was first reported in Kenya in 2016, according to CABI.

    The decrease of production in this time also attributed to a decrease of household income estimated at Sh23,000 leaving small-scale farmers desperate for solutions leading to excessive use of chemical products to use to eradicate the pest.

    The education program is expected to reach farmers through Radio Kaya 93.1fm and aims to strengthen ongoing government initiatives in the creation of awareness through extension services and farmer training.

    The campaign comes after a launch of the mealybug management program by CABI in partnership with Mombasa, Kilifi and Kwale county governments Ministries of Agriculture, Kenya, Kalro, Kefri, Kephis, the University of Nairobi and Precision Agriculture for Development.

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    The papaya mealybug has made several of my farmer friend stop the farming of the fruit, it is a difficult pest to manage. It is good for international organizations are helping us to deal with this pest,” says Kalume a papaya farmer in Kilifi.

    For more information CABI


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    By George Munene

    The International Centre of Insect Physiology and Ecology (icipe) has released a parasitic wasp in Kirinyaga County—Kenya’s largest producer of tomatoes—that promises to rid farmers of the tomato leafminer pest that causes up to 100 per cent in yield losses if unchecked.

    More than any other tomato pest, Tuta absoluta, dubbed “tomato ebola” in Nigeria, has been the bane of African farmers since it was first detected in the continent in 2008. It is near impossible to effectively control by chemical methods due to the insect’s capability of quickly developing resistance to new insecticide strains. Its nature of damage—burrowing into fruits and its larvae mining crop leaves—make pesticide contact difficult.

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    “One of the main challenges in the control of tuta is its fast reproduction rate, with many generations emerging per year. As such, the pest quickly develops resistance to major pesticides,” explains Dr Samira Mohamed, Senior Scientist, ICIPE. “This, in turn, forces farmers to apply broad-spectrum synthetic insecticides, often in extremely high doses, and far too frequently. This has led to increased production costs, and pesticide residues in yield with detrimental impact on the health of growers, consumers and the environment,” he adds.

    Tuta absoluta attacks result in 50 to 100 per cent tomato yield reduction with the infected fruits losing their marketability. This often forces farmers to uproot entire fields to arrests the pest’s rapid spread which is aided by the ubiquity of solanaceous plants, intensive monoculture and a lack of observing proper crop rotation intervals.

    The wasp, Dolichogenidea gelichiidivoris, which has been imported from Peru acts as a natural enemy for Tuta absoluta by laying its eggs inside the pest’s caterpillars. The eggs emerge as adult wasps killing the larvae of the pest. The wasp spreads rapidly in search of the pest infested plant material.

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    ICIPE will continuously monitor and report on the wasp’s progress in tackling tuta and the improvement of tomato yield in the initial field releases carried out in Central Kenya. The insects and arthropods research body plans to releases the wasp in other major tomato-growing regions in Kenya, as well as in Ethiopia and Uganda.

    ICIPE: +254-20-8632000/Mbita Campus: +254-59-22216/Duduville Campus: +254-20-8632000

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    Wheat photo cred Adobe stock E copy

     By Zuneid Yousuf

    Described as "a fast-acting and devastating fungal disease", wheat blast has been recently confirmed for the first time on the African continent by the International Maize and Wheat Improvement Centre (CIMMYT).

    Along with the Zambian Agricultural Research Institute (ZARI), United States Department of Agriculture, and Foreign Disease Weed Science Research Unit (USDA-ARS), researchers highlighted that symptoms of the disease, were in fact first identified in Zambia during the 2018 rainy season.

    The wheat blast, which spreads through infected seeds, crop residues and airborne spores, presents a further knock back for farmers already struggling with the economic fallout from the pandemic to food supply and food security.

    Last year, the International Center for Tropical Agriculture (CIAT) called for global preparedness to minimize the risk to food supplies, highlighting that, globally, yield losses caused by pests and diseases are estimated to average 21.5% in wheat, 30.0% in rice and 22.6% in maize. 

    Sub-Saharan African farming communities, continue to be hit with new challenges; they are currently working against the backdrop of a growing demand for food, where global agricultural production must increase by 70% by 2050 to fulfil the demand, as well as a global pandemic that has impacted food supply chains and weakened food security efforts.

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    As well as posing a serious threat to rain-fed wheat production in Zambia, it also raises the alarm for surrounding regions and countries on the African continent with similar environmental conditions.

     Worldwide, 2.5 billion consumers depend on wheat as a staple food and, in recent years, several African countries have been actively working towards reducing dependence on wheat imports. Despite this,  according to a 2019 study, wheat is also becoming an important food crop in Africa due to rapid population growth linked to increased urbanisation and change in food preference for easy and fast food.

    Although CIMMYT has announced that it is partnering with national researchers and meteorological agencies on solutions to mitigate the threat of wheat blast and increase the resilience of farmers in the region, we must also examine the bigger picture. There are lessons to be learned in relation to how we equip our farmers with the tools and knowledge to prevent crop diseases in the first place, as well as how this contributes to sustainable agriculture practices.

    Many national and regional plant protection organizations already work to monitor and contain crop disease outbreaks. However, there are efforts to be made at all levels, not only for a more efficient coordination of responses that will prevent disease establishment and spread, but also to exchange information around innovative research-based alternatives. 

    Pawan Singh, head of Wheat Pathology at CIMMYT highlights the need for this further research to mitigate the wheat blast itself. He points to a set of research outcomes, including the development of resistant varieties, identification of effective fungicides, agronomic measures, and new findings in the epidemiology of disease development.

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    As the Chairman of African Green Resources (AGR), I see our contributions to the mitigation of the wheat blast as critical, especially because our location has meant that we find ourselves in the midst of the affected areas. Currently, AGR is working with ZARI and engaging South American and Indian seed developers to identify improved strains of wheat seed to be adopted in Zambia.

    The productivity of smallholder agriculture is also vital. Its contribution to the economy, food security and poverty reduction depend on the services provided by well-functioning ecosystems, including soil fertility, freshwater delivery, pollination and pest control.

    Our primary focus at AGR is on training small-scale farmers in good agriculture practices, by providing them with affordable inputs and technologies, as well as soil fertility-testing facilities, to achieve high yields. However, these high yields are redundant without the adequate tools and methods to protect the crops. 

    This is why AGR facilitates agriculture credit, working capital for equipment leases, fertilizers, seed and chemicals to ensure that no base is left uncovered. In exchange AGR collects crop harvests through warehouse receipts at centralized storage silos. 

    In order to support food security initiatives in to the future, we must scale up farming practices that maintain the resource base on which smallholders depend, such as soil fertility and groundwater, whilst ensuring that all farmers vulnerable to environmental externalities such as crop diseases, have the support and training they need to minimise the risk of depleted crop yields.

    As the coronavirus pandemic has shown, we may not yet be able to combat every disease that threatens our livelihood, but those in the best position to fight it are those best prepared. This same mantra applies to global agriculture, and far more is needed in order to prepare and support smallholder farming communities across the world. 

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