Solutions

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100 Solutions found

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Integrated management of insects, diseases and weeds in wheat

  • Zewdie Bishaw
  • z.bishaw@cgiar.org

Wheat farmers in Sub-Saharan Africa commonly apply chemical substances to prevent substantial yield losses or total crop failure of major pests like beetles, aphids, cutworms, leaf spots and crown rots because these are simple and inexpensive to use. Over time, this imposes a selective pressure on insects, microorganisms and weeds that leads to the emergence of biotypes that are resistant …

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Minimal tillage and surface mulching of soils

  • Zewdie Bishaw
  • z.bishaw@cgiar.org

Declining soil fertility and increasing water stress are two of the most pertinent challenges for wheat production in dry tropical and subtropical regions from Sub-Saharan Africa. Farmers traditionally make excessive use of tillage for managing weeds and return very limited amounts of organic matter to soils which causes a gradual degradation of key processes such as nutrient exchange and water …

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Furrow irrigated raised bed wheat production

  • Zewdie Bishaw
  • z.bishaw@cgiar.org

Irrigating wheat crops across dryland belts from Sub-Saharan Africa is vital to realize higher yields, strengthen drought resilience and expand production into new areas. The limited supply of freshwater for agriculture, and cost of extraction, storage and delivery, however pose major challenges and make that the resource has to be exploited in the best way possible. Most wheat farmers in …

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Winter production in heat prone regions

  • Zewdie Bishaw
  • z.bishaw@cgiar.org

Grain yields of wheat strongly decrease when the crop is exposed to high diurnal temperatures at any point during its growth cycle and this occurs frequently in the hot rainy seasons when wheat is traditionally cultivated by farmers across the dry lowlands of Sub-Saharan Africa. Heat events in this time of year have become more regular and more intense because …

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Hessian fly resistant wheat varieties

  • Zewdie Bishaw
  • z.bishaw@cgiar.org

The production of wheat in Sub-Saharan Africa is threatened by infestations of the Hessian fly, Mayetiola destructor, popularly called gall midges. This insect pest has spread across all major breadbasket areas of Eastern and Southern Africa, and is causing substantial losses of grain and forage yields. Damage to wheat crops is attributed to larvae of the Hessian fly that get …

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Yellow rust and stem rust resistant wheat

  • Zewdie Bishaw
  • z.bishaw@cgiar.org

In major wheat production zones of Sub-Saharan Africa yellow rust and stem rust are counting as one of the most destructive diseases. Under favorable conditions infections by these fungal pathogens lead to yield losses of 50-90% and may destroy wheat crops entirely within a weeks. Rust diseases quickly spread as its spores get carried along by winds and allows them …

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Seed inoculation with rhizobia

  • Paul Woomer
  • plwoomer@gmail.com

Reduced legume production is associated with declining soil fertility and low availability of soil nitrogen (N) to plants. Nitrogen is essential for plant growth and is the most limited nutrient in the African soils. This needed nitrogen may be applied as mineral fertilizers, as organic residues, or in the case of many legumes through securing abundant antmospheric N through Biological …

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Climbing bean with high yield and N fixation

  • Josey Kamanda
  • j.kamanda@cgiar.org

Climbing bean varieties offer higher yields but require more intensive cultivation compared to bush types. Improved varieties of climbing bean with high yield potential, resistance to pests and diseases, and tolerance to abiotic stresses are now available in Eastern and Southern Africa. Breeding and selection for higher biological nitrogen fixation in climbing bean has served not only to cut costs …

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