Comparative effect of insecticide and blue polythene hanging on the incidence and severity of okra mosaic in the growth of okra plant
2002
Haque, M.F. | Islam, S.M.A. | Alam, M.M. | Hossain, A.F.M.G.F. | Anam, M.K. (Bangladesh Agricultural Univ., Mymensingh (Bangladesh). Dept. of Plant Pathology)
A field study was conducted to compare the efficacy of blue polyethylene hanging over the plant and spraying insecticide in reducing incidence and severity of okra mosaic under natural inoculated condition. Size of blue polyethylene strip was 0.04x3.5 m2 and six polyethylene strips were used per plot and the recommended dose of insecticide was 454 ml per acre. Blue polyethylene strips and insecticide reduced the infection of okra mosaic virus. The number of disease infected plants per plot and mosaic infected leaves per plant were the lowest and number of leaves per infected plant and plant height was the highest in the plots, where blue polyethylene strips were hanged and insecticide was sprayed followed by the spraying of insecticide and hanging of blue polyethylene strips. The number of disease infected plants per plot and mosaic infected leaves per plant were the highest and number of leaves per infected plant and plant height was the lowest in the control plots.
显示更多 [+] 显示较少 [-]