Vol. 11, Issue 12 (2022)

Author(s):
Sujeeta Kharibam, Kangjam Bumpy, RK Imotomba Singh and Kripalini Ningombam

Abstract:
The studies on “Efficacy of botanical extracts against insect pests of pea (Makhyatmubi) in Bishnupur District, Manipur” were carried out at the field of Pandit Deen Dayal Upadhyay Institutes of Agricultural Sciences, Utlou, Manipur to assess the effect of four indigenous plant extracts viz., Neem, Marigold, Periwinkle and Wild sage of two different concentration (5 percent and 10 percent). A control and standard check (Thiamethoxam 25 WG) was also maintained. Three insect pest viz., Aphid (Acyrthosiphon pisum), Leaf miner (Chromatomyia horticola) and Gram pod borer (Helicoverpa armigera) were found infesting the pea crop during the season. Among the botanical tested, Neem 10 percent was found to be the best effective treatment for managing all the insects. Neem 10 percent recorded as the best treatment recording overall mean Aphid population of 3.01 closely followed by Neem 5 percent (3.10). The least effective treatment was recorded in Periwinkle 5 percent with overall 3.59 mean populations. Likewise, in leaf miner and Gram pod borer Neem 10 percent proved to be the best botanical extract reporting 0.87 and 1.22 overall mean population closely followed by Neem 5 percent (0.93 and 1.27), Marigold 10 percent (1.04 and 1.30) and Marigold 5 percent (1.56 and 1.37) respectively. Highest seed yield was recorded in Neem 10 percent (427.73 kg/ha) closely followed by Neem 5 percent (424.96 kg/ha) while lowest was observed in treatment with Periwinkle 5 percent (333.30 kg/ha) closely followed by Periwinkle 10 percent (336.06 kg/ha) and Wild sage 5 percent (363.86 kg/ha). In the present investigation, Neem proved to be the best botanicals for managing the three concerned insect pest of Pea.