Type and application time of ameliorant on soybean growth in tidal land Danner Sagala, Eka Suzanna, Prihanani
Agrotechnology Department Universitas Prof. Dr. Hazairin SH. Bengkulu
Abstract
Tidal swampland is one type of suboptimal land that can be developed to increase food crop production in Indonesia. However, tidal land contains a lot of Al3+ because it has acid soil reactions. Previous research found that the critical period for soybean plants against Al3+ stress was at the beginning of growth until 20 days after planting. This study aims to obtain the appropriate ameliorant to overcome Al3+ stress during the critical period of soybean growth. An Experiment on the types of ameliorant and the application time was arranged in a randomized block design repeated three times. The types of ameliorant tested were no ameliorant, dolomite, husk charcoal, husk ash, and straw. Each ameliorant was given 2 tonnes/ha before planting in dry cultivation (DC)- before planting in saturated soil culture (SSC)- 10 days after planting (DAS) on DC, 10 DAS for SSC, 20 DAS on DC, and 20 DAS on SSC. The experiment results are consistent with studies of saturated soil culture, which show that soybean in water-saturated culture has better growth than dry cultivation. In all types of ameliorant and at all times, saturated soil culture had more effect on the growth and production of soybeans. The type of ameliorant only affected the number of branches, and the highest number of branches was obtained in soybean treated with dolomite ameliorant. However, it was not significantly different from other ameliorants.
Keywords: ameliorant, saturated soil culture, soybean, marginal land
