Dissolve jiggery into water 1 kg for 1 acre in 15 l of water and spray it over the field. It will attract the Ants and they will eat larvae of insects.
Crop: Cotton
Crop Family: Malvaceae
Crop Scientific Name: (Gossypium hirsutum)
Crop Vernacular Name: Ruyi
Formulation: Liquid
Ingredients: Jaggery, water
"Ants positively impact agricultural systems by rapidly consuming large numbers of pest insects, disturbing pests during feeding and oviposition, and increasing soil quality and nutrients. ... Naturally occurring ant species in milpas, mango, citrus, coconut, cashews, and cotton control many pest insects. " [Choate, Beth & Drummond, Francis. (2011). Ants as biological control agents in agricultural cropping systems. Terrestrial Arthropod Reviews. 4. 157-180. 10.1163/187498311X571979.]
https://www.researchgate.net/publication/233526783_Ants_as_biological_control_agents_in_agricultural_cropping_systems