Biological Control In Brown Planthopper

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Introduction Biological control is one of the method on controlling any kind of pests including insects, mites, weeds and the plant diseases which by using other living organism as the control. This biological control involving some mechanisms such as predation and parasitism in order to get rid or to reduce the number of the pests. Brown planthopper (BPH), Nilaparvata lugens is from the order of Hemiptera. It is a common pest of the rice plants (Oryza sativa L.). This BPH has caused severe yield losses in economic and extensive damage to the rice crop in Asia. Pesticides which contain insecticidal compounds including isoprocarb, carbonfuran, fenitrothion and also synthetic pyrethroids were used to kill the BPH but unfortunately the BPH has developed resistance to all of this pesticides (Nagata, 1984; Lakshmi et…show more content…
A studies of molecular interactions between rice and the BPH has been done to identified the resistence gene exist in BHP. Also a wide diversity of invertebrate predators has been recognised to be the biological control of BPH (Waloff, 1980) and the major factor controlling the pattern of population growth of the BPH is the interactions between the BHP and their natural enemies (Wada et al., 1991). For nine major species of BPH, the spiders were considered as the major predators for it (Denno, 1994). The purpose of this review is to describe the biological control of BPH as the serious pests for the rice crops and also to understand the molecular interaction between itself (rice-BPH). The major method to control this pest is by parasitoid either using the natural enemies or the introduced enemies in order to

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