Pengaruh Varietas dan Kombinasi pupuk terhadap Pertumbuhan dan Produktivitas Kedelai pada Budidaya Jenuh Air di Lahan Pasang Surut

Abstract

The problems on tidal swamps are a condition of stress by Al-ex, Fe-ex and soil acidity. This condition decreased of soil nutrient availability. The utilization tolerant varieties and fertilizer combination under saturated soil culture technology has been proved to increase soybean productivity on tidal swamps. Saturated soil culture technology is a cultivation that gives continuous irrigation and maintains water depth constantly, as a result soil layer in saturated condition. This study aims to determine the tolerant of soybean variety and the best fertilizer combination under saturated soil culture on tidal swamps. The experiment was arranged in a split-plot design with three replications. The main plots was 4 kind of soybean variety and subplots was 10 kind of fertilizer combination. The result showed that the interaction between varieties and fertilizer combination significantly affected growth and productivity under saturated soil culture on tidal swamps. The highest productivity was obtained from Tanggamus with fertilizer combination of 200 kg/ha SP-36 + 100 kg/ha KCl + 1 ton/ha dolomite + 2 ton/ha manure, whose productivity up to 4.76 ton/ha