~ 1146 ~ International Journal of Chemical Studies 2019; 7(6): 1146-1150 P-ISSN: 2349–8528 E-ISSN: 2321–4902 IJCS 2019; 7(6): 1146-1150 © 2019 IJCS Received: 04-09-2019 Accepted: 06-10-2019 Sushant Kumar Department of Entomology, SVPUA&T, Meerut, Utter Pradesh, India Hem Singh Department of Entomology, SVPUA&T, Meerut, Utter Pradesh, India Abhishek Yadav Department of Entomology, SVPUA&T, Meerut, Utter Pradesh, India Sachin Arya Department of Entomology, SVPUA&T, Meerut, Utter Pradesh, India Ravi Shanker Department of Entomology, SVPUA&T, Meerut, Utter Pradesh, India Corresponding Author: Abhishek Yadav Department of Entomology, SVPUA&T, Meerut, Utter Pradesh, India Evaluate the effect of insecticides and bio pesticides on the spiders population Sushant Kumar, Hem Singh, Abhishek Yadav, Sachin Arya and Ravi Shanker Abstract The research was conducted at Crop Research Centre of Sardar Vallabhbhai Patel university of Agriculture and technology Meerut, During the Kharif season of 2018. The data revealed spider population, that Lambda cyhalothrin 5 EC @ 500 ml/ha was the highly effective for the spiders among all treatments followed by Fipronil 5 SC @ 1 ltr/ha and Cartap hydrochloride 4G @ 750 gm/ha whereas all the bio- pesticides were safe for the spider. Keywords: BPH, biopesticides, insecticides, rice and spiders Introduction Rice (Oryza sativa Linn.) belongs to the family-Graminae, is the second largest produced cereal in the world. It has two cultivated and 22 wild spp. It is only cultivated cereal plant adapted to growing in flooded and non- flooded soil. Rice is the major food crop which is providing about 80 percent of the calories to over 2 billion Asian’s. Rice grown area is 44.50 M ha with production of 115.63 Mt in India (Anonymous, 2019) [1] . Rice is the major staple food for half of the world (Khush, 2004) [7] . It is important crop because its nutritional as well as commercial value as 100 g of rice supplies 365 kcal energy, 0.12 g sugar, 7.12 g protein 1.3 g dietary fiber and traces of thiamine, riboflavin, zinc, calcium, iron, manganese (Anonymous, 2010) [2] . Various factors are responsible for the reduction of rice yield along with many of the diseases and insect pest. One of the main reasons for the low productivity of rice is insect-pests, diseases and weeds. Many most of the insect spp. has been reported to attack rice crop out of which aprrox. 20 spp have been found to be major including Brown plant hopper, White Backed Plant Hopper, Yellow stem borer and some other insect pests (Singh and Dhaliwal, 1996) [11] . The Brown plant hopper is the monophagus, small or tiny insect with 2.0 to 3.5 mm body length. It is a brownish color insect which feed on the phloem of plant. Adult and nymphs, both damage to the phloem of rice plant. Though this insect is known to occur in Asia since late forties, it was earlier only a minor pest of rice. Serious outbreaks of BPH were reported in various parts of India during early 70s. BPH damages plant directly by sucking to plant sap and indirectly by transmitting viral disease like grassy stunt and ragged stunt. BPH caused economic damage by sucking phloem sap which in turn leads to “hopper burn” and sever yield loss (Rao et al., 2003) [8] . Both the nymphs and adults of these hoppers suck the sap from phloem and xylem resulting in drying up of the rice plant. Agriculture consumes 52 per cent of the total insecticides in India, and intern rice crop alone accounts for 17 per cent of it. Large scale use of various chemical compounds has caused BPH to develop resistance and detrimental impact on natural enemies. Because of this, the investigation was also undertaken the bio efficacy of three different microbial pesticides like Metarhizium anisoplea, Beauveria bassiana and Verticellium lecanii. More than 700 species of fungi, mostly Deuteromycetes and Entomophorales from about 90 genera are pathogenic to insects (Rombach et al., 1986) [9] . Keeping mind the idea of agro ecosystem the research program was undertaken to investigate the effectiveness of different approaches of chemical and biological control against Brown Plant Hopper, Nilaparvata lugens (Stal.).