The new technology for cassava production
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International Center for Tropical Agriculture
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Cassava is a low-priority crop in agricultural development policies in most L.A. countries, limiting active research and extension activities. A description is given of CIAT-generated low- cost technology that can increase yields. This package consists of the visual selection of planting material; chemical treatment (fungicides + insecticides + micronutrients) of the selected cuttings; proper preparation of the cuttings (cut rectangularly at 20 cm, with 5-7 nodes) and planting vertically at a depth of 10 cm; and the use of high-yielding, adapted var. Cassava should be planted on ridges when soils are heavy textured with greater than 1200 mm rainfall/yr. On Oxisols and Vertisols, cassava should be fertilized with 1/2 t dolomitic lime and 1 t/ha 10-20-20NPK + 20S + 10Zn. In other soils, sufficient fertilizer to replace the nutrients extracted in the final product should be applied. Timely control of weeds is important. Pest-tolerant var. should be used; rotation or fallowing can also be practiced to break pest cycles. If disease-resistant material is not available, planting should be timed to avoid disease attack. Mechanical harvesting aids and storage of fresh roots are also discussed. (AS)
Palabras clave
manihot esculenta, costs, cuttings, pest control, plant development, planting, productivity, roots, storage, cultivation, economics, physiology, plant anatomy, plant physiology, propagation materials, starch crops