Application of livestock manure and edamame harvest waste to improve the chemical properties of acid dry land

Abstract

South Kalimantan has a large dry land. It is classified as acidic and has the potential for agricultural cultivation, especially food and horticulture crops. However, the problem with its use as agricultural land is the low level of soil fertility. This is evidenced in its low content of soil organic matter, acidic soil pH, low soil CEC, low soil exchange bases, high Al and Fe content. This study aims to improve soil chemical properties in acid dry land by the application of livestock manure and edamame harvest waste (EHW). It was compiled using a Nested Factorial Randomized Block Design, where the edamame harvest waste was nested in livestock manure. The treatment level of the first factor was chicken, cow, and goat manure, while the second was 0%, 25%, 50%, and 75% EHW. The results showed that the treatment of 100% chicken manure + 0% EHW increased soil pH by 9% compared to 25% chicken manure + 75% EHW. Furthermore, treatment of 100% goat manure + 0% EHW increased soil pH compared to 50% goat manure + 50% EHW and 25% goat manure + 75% EHW by 11.69% and 14.28%, respectively. The treatment of 100% chicken manure increased soil organic C by 38.16% compared to 25% chicken manure + 75% EHW. Meanwhile, the treatment of 100% goat manure increased soil organic C compared to 50% goat manure + 50% EHW and 25% goat manure + 75% EHW by 36.23% and 55.83%, respectively.