Efficacy of Insecticides and Crop Critical Stage for the Management of Chickpea Pod Borer [Helicoverpa armigera] in Central Zone of Tigray, Ethiopia

Authors

  • Gebretsadkan Zereabruk Tigray Agricultural Research Institute, Axum Agricultural Research center, P.O.Box 230 Aksum
  • Nahom Woldu Tigray Agricultural Research Institute, Axum Agricultural Research center, P.O.Box 230 Aksum
  • Kiros Wolday Tigray Agricultural Research Institute, Axum Agricultural Research center, P.O.Box 230 Aksum

Keywords:

Chickpea, H. armigera, insecticides, growth stage

Abstract

Chickpea pod borer (H.armigera) is a major insect pest constraining chickpea production in Tigray, northern Ethiopia; as there was no recommended management option in the area. Therefore the present study was conducted to assess the efficacy of insecticides and to determine the critical growth stage of the crop for effective spray at Axum agricultural research center. Results indicated that in laboratory profit72% EC (profenofos), abema 3%EC (abamectin20g/l + emamectin benzoit 10g/l), perfecto (imedachloprid + lambda-cyhalothrin) and hamectin (abamectin) reduced the number of larvae by (75, 55, 44 and 34%); (86, 82, 65, 56%) and (83, 83, 66 and 83%) 24, 48 and 72 hours after spray, respectively. Similarly abema 3%EC and profit (Profenofos) 72% EC were the most effective insecticides to give high mortality of pod borer on chickpea under field conditions. These insecticides reduced the number of larva per plant by 51-56.7% five days after spray. The number of damaged pods per plant were very low in both insecticides (0.91 and 1.05) but on the untreated check 3.05. The highest yield was also obtained from chickpea treated with abema 3%EC at podding stage (23.92qt/ha). Comparatively the most effective insecticides against pod borer were abema and profit and the best application time were at podding stage of the crop. Thus chickpea growers in the area should prefer these insecticides for better pod borer management. 

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Published

2019-12-30

How to Cite

Gebretsadkan Zereabruk, Nahom Woldu, & Kiros Wolday. (2019). Efficacy of Insecticides and Crop Critical Stage for the Management of Chickpea Pod Borer [Helicoverpa armigera] in Central Zone of Tigray, Ethiopia. International Journal of Life Sciences, 7(4), 631–637. Retrieved from https://ijlsci.in/ls/index.php/home/article/view/276

Issue

Vol. 7 No. 4 (2019): International Journal of Life Sciences

Section

Research Articles

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Copyright (c) 2019 Gebretsadkan Zereabruk, Nahom Woldu, Kiros Wolday

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