Pakistan is an agrarian economy. Agriculture is mainstay of the economy because it provides food item, employment, raw material to other sector and exported item. The crops sector is the leading subsector of the agriculture. This is sub divided into two sectors major crops and minor crops. The crops sector performance has significant impact on the agriculture and national output. The performance of the crops sector has affected by the Farm and non Farm inputs. The better availability of these inputs plays a major role to enhance the crops production and its share into agriculture and national output. The non Farm inputs contribute more because it increases the productivity of the crops sector. The non farm inputs such as fertilizers, machinery and improves seeds are the results of technological changes. These technological changes have considerable impact on the production of the crop sector. Major crops cotton, sugarcane, Rice and wheat are most important role play for enhance the agriculture and the national output. As it is other crops of this sector also contribute. The output of the crops is affected by the weather conditions for example rains, snow and temperature.