Influence of Plant Spacing and Nitrogen Fertilizer on Growth and Yield of Maize (Zea Mays) on Sloping Land Yen Minh - Ha Giang
Hà Thị Thanh Bình
Nguyễn Xuân Mai
Thiều Thị Phong Thu
Vũ Duy Hoàng
Nguyễn Mai Thơm
Nguyễn Thị Phương Lan
Abstract
This experiment was conducted in order to valuate the effect of three plant densities (69,4; 79,3 and 92 thousands plants/ha) and four rates of nitrogen fertilizer in the form of urea (90,120,150,180 kg N/ha) on maize variety NK 4300 being grown on sloping land in Yên Minh district, Hà Giang province in the Spring-summer crop 2010. A constant level of 90 P2O5 + 90 K2O was used. The highest profit was obtained with planting density of 92 thousands/ha and 150 kg N+90 kg P2O5 +90 K2O/ha.