Estimated crops losses in pigeon pea caused by the pod borer complex
Extensive field surveys were carried out in 44 districts of Uttar Pradesh, India, from 1978-79 to 1983-84. Pod samples of pigeon pea collected from 483 farmers' fields were examined to assess the damage caused by lepidopteran borers (Heliothis armigera, Exelastis atomosa, Lampides boeticus, etc.), podfly (Melanagromyza obtusa); bruchids (Callosobruchus spp.) and others (mainly hemipteran bugs). On average nearly 77 and 92 percent of fields had more than 5 percent grain damage resulting from lepidopteran borers and podfly respectively, which can be considered a threshold level for insecticide use
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| Format: | biblioteca |
| Subjects: | GRANOS, PERDIDAS, CAJANUS CAJAN, INSECTOS DANINOS, LEPIDOPTERA, HELIOTHIS ARMIGERA, EXELASTIS ATOMOSA, LAMPIDES BOETICUS, MELANAGROMYZA OBTUSA, CALLOSOKRUCHUS, HEMIPTERA, NEZARA VIRIDULA, CLAVIGRALLA, INDIA, |
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