Studies were carried out to investigate the effect of growing of cotton and okra as mono and mix crops or polycultures on percent infestation of Earias spp. on cotton and okra under field conditions. The results revealed that Earias spp. infestation on okra appeared about 45 days after sowing of the crop; whereas, on cotton the pest appeared atleast one month later than it appeared on okra. Two years data indicated a highly significant (F=14.36; DF = 6, 3, P<0.01) difference in percent infestation of Earias spp. on different mono and mix crops of cotton and okra. The highest Earias spp. infestation (18.45%) was recorded on okra grown as mono crop followed by okra mix, cotton mono crop and cotton mix crop with percent infestation of 10.29, 5.97 and 3.90, respectively. It was concluded that okra could be used as a trap crop for the population management of Earias spp. in cotton crop.
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G.H. Abro, A.J. Memon, T.S. Syed and A.A. Shaikh, 2004. Infestation of Earias spp. on Cotton and Okra Grown as Mono and Mix Crops. Pakistan Journal of Biological Sciences, 7: 937-942.
- Ofuya, T.I., 1991. Observations on insect infestation and damage in cowpea, Vigna unguiculata intercropped with tomato, Lycopersicon esculentum in a rain forest area of Nigeria. Exp. Agric., 27: 407-412.
- Abro, G.H., T.S. Syed and Z.A. Dayo, 2003. Varietal resistance of cotton against Earias sp. Pak. J. Biol. Sci., 6: 1837-1839.
- Afifi, F.M.L. and M.F. Haydar, 1990. Effect of different intercropping systems on onion and garlic infestation with the cotton and onion thrips, Thrip tabaci (Lind.). Bull. Fac. Agric. Cairo Univ., 41: 639-648.
- Srinivasan, K., K.P.N. Moorthy and T.N. Raviprasad, 1994. African marigold as a trap crop for the management of fruit borer Helicoverpa armigera on tomato. Int. J. Pest Manage., 40: 56-63.