Minja, E.M. and Shanower, T.G. and Songa, J.M. and Ongaro, J.M. and Kawonga, W.T. and Mviha, P.J. and Myaka, F.A. and Slumpa, S. and Okurut-Akol, H. and Opiyo, C. (1999) Studies of pigeonpea insect pests and their management in Kenya, Malawi and Uganda. African Crop Science Journal, 7 (4). pp. 59-69.
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Abstract
Systematic surveys were conducted in farmers= fields in Kenya, Malawi, Tanzania, and Uganda to determine distribution and damage levels due to insect pests of pigeonpea seeds. Three surveys were conducted in eas 1992 and two in 1995. Two surveys, one per country per year - were conducted in Malawi, Tanzania, and Ug 1996. Key insect pests were pod sucking bugs (dominated by Clavigralla tomentosicollis Stål), pod and seed (Helicoverpa armigera Hübner, Maruca vitrata (= testulalis) Geyer, Etiella zinkenella Treitschke), and pod fly ( chalcosoma Spencer). Seed damage due to insect pests were 22, 15, 14, and 16% in Kenya, Malawi, Tanzan respectively. Damage levels indicated that pod sucking bugs were more damaging in Malawi (caused 69% of and Kenya (43%), while pod borers caused more damage in Tanzania (50%) and Uganda (54%). Pod fly cau Kenya than in the other countries. Pod borer damage was high in early maturing crops and pod fly in late mat sucking bugs damage was high regardless of crop maturity period. Greater variations in seed damage were o locations in Kenya, Malawi, and Tanzania than in Uganda. Warm and dry locations had less seed damage tha cool and dry, or cool and humid locations in Kenya, Malawi and Tanzania. None of the farmers visited in Mala Uganda used conventional pesticides on pigeonpea in the field. Over 80% of these farmers used traditional m
| Item Type: | Article |
|---|---|
| Author Affiliation: | International Crops Research Institute for the Semi-Arid Tropics, P .O. Box 39063, Nairobi, Kenya |
| Subjects: | Plant Protection Plant Protection > Control Methods Plant Protection > Pests |
| Divisions: | Pigeonpea |
| Depositing User: | Mr T L Gautham |
| Date Deposited: | 05 May 2011 04:57 |
| Last Modified: | 05 May 2011 04:57 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/1948 |
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