Green larvae infestation leads to a heavy economic loss for the farmer due to less production of okra (Abelmoschus esculentus) crop. To prevent the loss, Nathabhai Vankar uses the leaves of bitter gourd (Momordica charantia) as well as one kilogram of its fruit. He thoroughly mixes the bitter gourd leaves and fruits in water and sprinkles the juice on the okra crop. This effectively controls infestation by green larvae on the crop.
Crop Family: Malvaceae
Crop Scientific Name: (Abelmoschus esculentus)
Crop Vernacular Name: Okra, Bhindi
Formulation: 1 kg of bitter gourd fruit and mixed in water
Ingredients: Creeper leaves of bitter gourd (Momordica charantia), bitter gourd fruit
"Besides the leaves, bitter gourd fruit also has a botanical pesticide potency. Bitter gourd fruit juice and hexane extract of bitter gourd fruit serves as a larvicide in mosquito larvae of Anopheles stephensi, Culex quinquefasciatus and Aedes aegypti" linkPAS 2:
"Study results showed that botanical insecticide active compounds that had been isolated from the leaves extract of bitter gourd was terpenoids (Mekuria, et al., 2005), (Yasui, 2002), (Ling, et al., 2008), (Abe and Matsuda, 2000) and (Dev Anand and Rani, 2008)."PAS 3:
"Composition of Water Extract from Wild Bitter Gourd (Momordica charantia L.) Fruit for application as Antifeedant and Mortality Test on Armyworm Larvae (Spodoptera litura Fab.) Terpenoids in plants was part of plant self-defense mechanism against pests and diseases, so it was used much as insecticides, fungicides and herbicides in agriculture, and as antimicrobial and antifungal in pharmaceutical field."