Investigation of Corn as a Trap Crop for Damage Decrease of Helicoverpa armigera in Cotton.
2012
Heravi, Parisa | Sarkolaei, Akbar | Diehji, Ahmad | Sharifi Jahan Tigh, Gholam Reza
Cotton boll worm is a polyphagous pest that because of the several usage of poisons for cotton pest control and death of natural enemies in cotton ecosystems , integration of controling methods is advised . The use of trap crops in borders and inter-rows of main crop , have benefits such as reducing use and costs of pesticides, conserving natural enemies , increasing crop quality and improving soil and environment conservation . Corn crop ( Zea mays ) that is current culturing crop in this region and one of the hosts of the cotton boll worm and their enemies ,in this research planted in borders and inter-rows of cotton plots in RCBD with 3 replications . Combined analysis of results showed that highest number of larvae was in cotton (control ) treatment with 22/8 and lowest one was in cotton plots with corn in borders with 12/1 larvae.It is suggested to do complementary researches in the effects of corn as a trap crop in combination with other non-chemical methods for cotton boll worm control.
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