Groundnut (Arachis hypogaea L.) crop is highly susceptible to weed infestation in the initial stages upto 40days.Groundnut productivity in India is lowdue to serious problems of weeds. Groundnut yield losses due to weeds have been estimated as high as 24 to 70 percent. This study is an attempt to ascertain the adoption of herbicide recommendations by the farmers, to estimate the impact of herbicidal weed management on the yield and net return of groundnut and to identify the constraints faced by the farmers in adoption of herbicides.

The Rajkot and Junagadh being the major districts in groundnut cultivation in Gujarat were selected purposively for the study. Two talukas from each district, two villages from each taluka and ten herbicide users (adopter) and ten non herbicide users (non-adopter) farmers were selected randomly. Thus constituting a total sample size of 160 respondents in the year 2017. Tabular analysis and Cobb-Douglas production function was finally selected using statistical criteria and economic criteria.

The research shows that total cost incurred by the adopter group was lower than the non-adopter because of relatively optimum utilization of input resources. More than 50 per cent of the farmers were using “Targa Super” herbicide. Farmers in study area were using lower quantity of herbicide than recommended by the university and respected company.Farmers were believed that higher the dose of herbicide would inversely affect the crop production. Adopter group of farmers’ reaped higher yield as well as low production unit cost than the non-adopter group. Majority of farmers in adopter group faced constraint was crop foliage abrasionin using of herbicides.