EFFECT OF TRAP CROPPING SYSTEM ON THE POPULATION DYNAMICS OF HELICOVERPA ARMIGERA (HUBNER) IN CHICKPEA AGRO-ECOSYSTEM.

Autor: Ahmad, Salman, Ansari, Mohammad Shafiq, Khan, Hadi Husain, Ahmad, Malik Mobeen, Siddiqui, Saba
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Zdroj: Journal of Experimental Zoology India; Jul2017, Vol. 20 Issue 2, p913-918, 6p
Abstrakt: Effects of trap crops (pea, tomato, marigold, faba bean, berseem in ratio of 4:2, 6:2 and 8:2) were evaluated on the management of H. armigera for three cropping seasons of 2011-12, 2012-13 and 2013-14. In 2011-12, a total of 4.9 larvae/ meter row was in chickpea+tomato (4:2) compared to 9.9 larvae in sole chickpea. Pod damage was 39.5% in chickpea+pea (4:2) with highest yield of 1013.5 kg/ha compared to control (sole chickpea). In 2012-13, 4.5 larvae were recorded in chickpea+pea (6:2) compared to 9.3 larvae in sole chickpea at harvesting. Yield was higher (1011 kg/ha) with minimum pod damage of 39.2% in chickpea+pea (4:2) than to 937.4 in sole chickpea. In 2013-14, chickpea+berseem (4:2) cropping system caused a greater reduction in larval population (5.2 larvae/meter row) with highest yield of 1033.7 kg/ha than to 10.6 larvae with yield of 900.2 kg/ha in sole chickpea. Analyzed results showed that chickpea+tomato (4:2) cropping system offered lowest (39.00%) pod damage with highest yield of 1018 kg/ ha compared to other cropping systems and chickpea alone. Hence, chickpea + tomato (4:2) were found to be efficient trap crop against H. armigera in chickpea agro-ecosystem. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index