EFEKTIVITAS PELET NPK ORGANIK BERBAHAN AMPAS TAHU, TEPUNG DARAH SAPI DAN ARANG SABUT KELAPA DALAM BUDIDAYA TANAMAN JAGUNG MANIS (Zea mays saccharata S.) DI TANAH REGOSOL
Abstract
The research entitled Effectiveness of Organic Fertilizer Pellets from Soybean Curd Waste, Cow Blood Meal and Charcoal of Coconut Husks for Cultivation of Sweet Corn (Zea mays saccharata S.) In Regosol Soil. The aim of this research was studying the role of organic fertilizer pellets which contained Nitrogen (N), Phosphorous (P), and Potassium (K) to substitute inorganic fertilizer (Urea, SP-36 and KCl) on fertilization of Sweet Corn in Regosol soil. This research was conducted during March until June, 2016 at Research Field, Faculty of Agriculture, Universitas Muhammadiyah Yogyakarta.
The research was designed by using a Completely Randomized Block Design with single factor that vary in the dose of organic fertilizer pellets, consist of 4 variations of dose which repeated 3 times. The treatments were A = 50 grams of organic fertilizer pellets/plant (3,3 tons/hectare); B = 60 grams of organic fertilizer pellets/plant (4 tons/hectare); C = 70 grams of organic fertilizer pellets/plant (4,7 tons/hectare); and D = Urea 5,25 grams + SP-36 1,5 grams + KCl 1,5 grams (Urea 350 kilograms + SP-36 100 kilograms + KCl 100 kilograms/hectare). The measured parameters were plant height, number of leaves, fresh weight of shoot, dry weight of shoot, fresh weight of root, dry weight of root, lenght of cob, fresh weight of cob, diameter of cob, number of cob rows, number of seed per row and production per hectare. The collected data were analyzed with Analysis of Variance (ANOVA) α 5 % and for the advance test Duncan’s Multiple Range Test (DMRT) α 5 % was used.
The results of this research showed that organic fertilizer pellets could replaced the use of Urea, SP-36 and KCl for Sweet Corn cultivation in Regosol soil. The application of organic fertilizer pellets with dose 50 grams/plant (3,3 tons/ha) is the most efficient dose Sweet Corn cultivation in Regosol soil.