Wheat
Wheat in Pakistan grown under different agro-ecological zones. In irrigated areas, wheat is planted after cotton, rice and sugarcane. In rainfed areas wheat is grown in sequence with maize, sorghum, pearl millet and after fallow especially in low rainfall zone.
In the Punjab region of India and Pakistan, as well as North China, irrigation has been a major contributor to increased grain output. Use of fertilizer and semi-dwarf varieties in developing countries has increased yields per hectare. Fertilizer and breeding technique improve its yield. Rotation cropping boost yield by 25%, rotation with canola crop.