IMPROVING THE PRODUCTIVITY POTENTIAL OF SOYBEAN IN THE LAHAR-LADEN AREA USING DRIP IRRIGATION SYSTEM AND MYCORRHIZAE SP.
This study aimed to assess the effect of the soil moisture allowable depletion and Mycorrhizae sp. on improving the productivity potential of soybean in the lahar-laden area using the drip irrigation system and furrow irrigation method. Results revealed that the plant height was significantly influenced by 40 % of soil moisture allowable depletion (MAD), with plants significantly taller when the soil was treated with Mycorrhizae sp. at 30 days after sowing (DAS). The drip irrigation method significantly affected the soybean plant height, leaf area index, and root length at 46 DAS. No significant increase was observed in the number of branches and stem diameter. The spore development of the beneficial fungus Mycorrhizae sp. was not affected by the supplementation of various irrigation systems. The highest increment of Vesicular Arbuscular Mycorrhizae (VAM) fungal spore development was observed in inoculated soils using the furrow irrigation method with 312.93 spores (30 days after inoculation (DAI)). Production of spores in the drip irrigation system rapidly increased from 31-96 DAI, giving the spore population count 356.84.
Spore Population; Mycorrhizae Sp.; Allowable Moisture Depletion; Drip Irrigation; Soybean