Increased growth and production of irrigated rice by providing cow organic manure and NPK compound fertilizers with planting systems Jajar Legowo 4:1 in the Village of Tanjung Keriahan, Langkat Regency, North Sumatera

Abstract

Until now the average national rice production that can be achieved is around 4-5 tons/ha. To increase production that can be achieved above the national average, new efforts in agronomic technology are needed to overcome it. One of the efforts that can be done is to examine the utilization of organic cow manure and NPK fertilization with the Jajar Legowo 4: 1. The purpose of the study is to obtain the optimum dose of cow manure and NPK compound fertilizer with high rice production achievements. The study was conducted in the Irrigated Rice Region of Tanjung Keriahan Village, Langkat Regency, North Sumatra Province. The study used Randomized Block Design with fertilizer treatment for organic materials in cow 4 levels of dosage: 0, 5, 10, 15 tons / ha and NPK compound fertilizer application with 5 treatment doses: 0, 100, 200, 300, 400 kg / ha. The results showed that the growth and development of rice plants Mekongga variety that were studied were best shown in the giving of 15 tons/ha of cow manure and NPK fertilizer application of 400 kg/ha.