Effect Of Some Flour Extract of Botanical Insecticide on Brown Planthopper (Nilaparvata lugens Stall) Mortality

oai:ojs2.jfmp.lppm.unand.ac.id:article/3Brown planthopper (BPH) (Nilaparvata lugens Stall) is the primary pest of rice plants. The pest can reduce production and even fail to harvest. To control BPH generally uses synthetic insecticides. The use of synthetic insecticides has a negative impact; therefore, we need alternatives control, namely botanical insecticides. The research aimed to obtain the best botanical insecticide flour extract to control BPH in rice plants. The study was conducted at the Plant Pest Laboratory, Faculty of Agriculture, Riau University, from October to December 2017. The research was conducted experimentally using a Completely Randomized Design (CRD), which consisted of six treatments and four replications. The treatment was without the administration of botanical insecticide flour, flour extract of siam weed leaf, derris root, soursop leaf, spiked pepper leaf, and neem leaf. The results showed that the flour extract of siam weed leaf, derris root, soursop leaf, and spiked pepper was able to control BPH because they were able to kill pests above 90%. Spiked pepper extracts tend to be the best treatment at killing BPH with an initial death time of 2 hours, LT50 of 12.75 hours, and BPH total mortality of 97.5