Farmers in Himachal Pradesh opt for foilage application as the soil of this area is acidic. Farmers in Himachal Pradesh seldom opt for soil application of granular pesticides because of low uptake and high residue. The soil of this area is acidic and foliage application is found to be more effective than soil application. Nowadays scientists have taken up studies on these lines. Foliage Application More Effective than Soil Application Use foliage application of pesticide for acidic soil in Himachal Pradesh area.
"Foliar Spray of Nitrogen Fertilizer on Raised Bed Increases Yield of Transplanted Aman Rice over Conventional Method"
https://www.hindawi.com/journals/isrn/2012/184953/
"Foliar dertilization-Importence and prospects in crop production."
https://link.springer.com/chapter/10.1007/978-94-009-4386-5_1