Crops are affected by environmental factors during its various stages of growth it faces risk due to various reasons most of these reasons are unavoidable and unrespectable. Which include suddenly increases in the temperature, change in Co₂ content, particularly rainfall water supply, Rise in atmospheric temperature will lead to loss of soil moisture and will increase the crop demand for water. The amount and availability of water. Stored in the soil will be affected by changes in both the seasonal and evapotranspiration regimes. Thus this paper presents the impacts of various environmental factors on the productivity of crop.