PENGARUH PUPUK PHOSFAT DAN BAHAN ORGANIK TERHADAP PERTUMBUHAN DAN HASIL SINGKONG (Manihot esculenta Crantz) KETAN YANG BERMIKORIZA DI TANAH MEDITERAN, GUNUNG KIDUL
Abstract
This study aims to look at the effect of the morphorized soil with various Phosphate fertilizers and test its compatibility in threeorganic fertilizer in Gunungkidul. This experimental research consists of two stages. Research in RAKL (Uncompletely Randomized Design) with factorial experimental design (3x3). Factor 1 is composed of 3 levels of Phosphate fertilizer dosage namely, A: Phosphate dose 70 kg / ha, B: Phosphate dose 80 kg / ha C: Phosphate dose 100 kg / ha. Factor 2 is organic fertilizer consisting of 3 levels, namely: P = cow organic; Q = goat organic; R = chicken organic. Parameters observed were, the number of spores in the soil, plant height, number of leaves, tuber diameter, number of tubers, tuber weight and proximate analysis. The results showed that there was no interaction between the dosage of Phosphate fertilizer with various types of local varieties in Gunungkidul. This can be seen from some parameters and the results of variance are not non-significant. In addition, only the effect of organic fertilizer in this study, can be seen from the parameters of tuber weight and tuber diameter which are significantly different. The best results are cow organic at a Phosphate dose of 70 kg / ha.