Many of the research works have used the parametric approach for computation of annual growth rate but not used the concept of non-linear model. In this study an attempt has been made for computation of growth rates through non-linear model approach of citrus fruits in Hisar and Haryana State as a whole The time series data for annual area and production of citrus fruits in Hisar district of Haryana and Haryana as a whole from 1990-91 to 2015-16 were taken from the Department of Horticulture site of Haryana. Growth rates were computed through best fitted non-linear models. It was found that Logistic model could be best fit for computation of growth rates of area and production for citrus fruit in Hisar and Haryana state as a whole. For fitting the non-linear growth model and computation of growth rates R and excel software have been used. The average annual growth rate for area and production of citrus fruit was observed to be 11.29 per cent and 15.35 per cent for Hisar district whereas it was observed to be 9.64 per cent and 14.90 per cent for Haryana state as a whole.