Bio-pest control for pigeon pea
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CTA. 1998. Bio-pest control for pigeon pea. Spore 73. CTA, Wageningen, The Netherlands.
Permanent link to cite or share this item: http://hdl.handle.net/10568/48972
External link to download this item: http://spore.cta.int/images/stories/pdf/old/spore73.pdf
Pigeon pea is an interesting crop as it can be grown and thrive in many different cropping situations. There are short duration and perennial cultivars. It is intercropped with cereals, with cotton, with other legumes and it has even been grown on...
Pigeon pea is an interesting crop as it can be grown and thrive in many different cropping situations. There are short duration and perennial cultivars. It is intercropped with cereals, with cotton, with other legumes and it has even been grown on rice bunds. Another interesting aspect is that the status of pigeonpea has changed in many places from being a subsistence crop to a commercial export crop. Malawi for instance, exports a significant quantity of pigeonpea. Pigeonpea has also been used as a trap crop, particularly in cotton as they share a common pest Helicoverpa armigera (formerly known as Heliothis armigera). The pest is highly damaging to both crops and due to heavy spraying of commercial high-value cotton, H. armigera has developed a considerable degree of chemical resistance. The International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), in collaboration with national programmes and other research institutes, has been researching a naturally-occurring virus disease which is specific to H. armigera. Diseased larvae of the pest are collected and ground up to make an extract which can then be sprayed on pigeonpea and cotton as a low-cost option, also tomato, sunflower and the many other crops that are susceptible to H. armigera. In India there are a number of commercial producers who use simple centrifuges to obtain a more concentrated, purer product. Initial results are promising. However, one problem is that the live pathogen is highly susceptible to sunlight and has a short activation period, which gives rise to variable success rates. For optimum results the product must be used fresh. The International Crops Research Institute for the Semi-Arid Tropics Patancheru PO Andhra Pradesh 502 324 INDIA
SubjectsCROP PRODUCTION AND PROTECTION;
- CTA Spore (English)