Response of soybean (Glycine max L.) that was applied by various liquid organic fertilizer in climate change at acid soil

Abstract. Acidic soils are formed from rapid climate change. Acid soils have problems in it,
among others; high levels of Al, Fe, and Mn and the unavailability of elements P and N for
staple crops. Indonesia imports almost 70% of its domestic requirement. The purpose of this
study was to determine the response of soybean plants that were given various types of liquid
organic fertilizer (LOF) to climate change in acid soils. Experiments have been carried out in
acid soil in the Kuranji area of Padang City. Materials needed include; Mutiara-1 seed. The lime
and LOF trials were arranged in a completely randomized design (CRD), with 9 treatments
namely; without calcification and without LOF (A); give lime equivalent to 1 x Exchangeable Al
and without LOF (Control) (B); Crocober (C); Crocoberma (D); Crocoberderma (E); Titocroco
(F); Titocrocoma (G); (H); Trichoderma harzianum (I). The observational data were analyzed statistically by using an F level of 5% significance level if the treatment had a significant effect, it was followed by an LSD test of 5% significance level. Observation parameters include;agronomic, pH soil. Experimental results established that dolomite lime can increase soil pH, Titocrocoma LOF accompanied by liming gives the best effect on soybean varieties Mutiara-1 at the vegetative stadium, produces 3.45 Mg ha-1 forage dry weight equivalent to107,64 kg N ha-1 or 618,93 kg ha-1 crude protein.