S. Sufardi, S. Syakur, M. Mislia, T. Arabia, K. Khairullah
This study aimed to evaluate the response of soybeans to the application of various amendments to the sub-optimal dryland of Aceh Besar. A pot experiment was conducted in a greenhouse in Darussalam, Banda Aceh at an altitude of 3 m above sea level. The soil amendments used are biochar, compost, CaCO3 lime, and SP-36 phosphate fertilizer (SP-36). The experiment used a bifactorial 8 x 3 Randomized Block Design (RBD) in 2 replications. The first factor was the application of amendments consisting of eight levels, namely: control (without ameliorant or 0 t ha-1), applications of biochar 20 t ha-1, compost 20 t ha-1, CaCO3 4 t ha-1, SP-36, 4 t ha-1, biochar 10 t ha-1 + CaCO3 4 t ha-1, compost 10 t ha-1 + CaCO3 4 t ha-1, and biochar 10 t ha-1 + compost 10 t ha-1. The second factor is the three soil orders originating from the dryland farming system of Aceh Besar, namely: Andisols Saree, Inceptisols Cucum, and Ultisols Jantho. The soil used was taken from the top layer at a 0-20 cm depth. The soybean tested was the Anjasmoro variety with a potential yield of 2.03-2.25 t ha-1. The results showed that the application of amendments (Biochar, Compost, CaCO3, and SP-36) to three soil orders from the dryland of Aceh Besar could increase soybean growth and yield with a maximum yield of 2.2 t ha-1. In Andisols Saree and Inceptisols Cucum, the highest soybean yield was obtained when combined with biochar and compost at a dose of 10 tons ha-1. In Ultisols Jantho it was got when compost was given a single dose of 20 t ha-1. The growth and yield of Anjasmoro soybean varieties on Ultisols Jantho were better than those on Andisols Saree and Inceptisols Cucum. © Published under licence by IOP Publishing Ltd.
Department of Soil Science, Faculty of Agriculture, Universitas Syiah Kuala, Jalan Tgk. Hasan Krueng Kalee 3. Darussalam, Banda Aceh, 23111, Indonesia
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