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description Journal article public Jurnal Budidaya Pertanian

Pengaruh Kompos Ela Sagu dengan Mikroorganisme Antagonis terhadap Kemasaman, P Tersedia dan N-Total Tanah pada Ultisols

Elizabeth Kaya, Arni Buton
Published 2020

Abstract

Agricultural waste, such as sago ‘ela’ or sago extraction waste, can be used as an organic fertilizer to improve the physical, chemical and biological properties of the soil. In addition to organic fertilizer from sago ‘ela’, microorganisms can also be used to increase soil fertility. The purpose of this study was to examine the effect of sago ‘ela’ compost and antagonistic microorganisms in the process of changing acidity (pH and Al-exc), availability of P, and total N in Ultisols soil. The research took place at the Laboratory of Soil, Water, and Plant Analysis, Faculty of Agriculture, Pattimura University, Ambon, in June - September 2016. The experiment was carried out with a completely randomized design (CRD) with a factorial arrangement of 4 x 3, with 3 replications. The treatments of providing sago ‘ela’ compost consisted of: no compost (K0), 15 g/kg of soil (K1), 22, 5 g/kg of soil (K2), 30 g/kg of soil (K3). Inoculum provision of antagonistic microorganisms consisted of: without inoculum (A0), Trichoderma sp inoculum 20 mL (A1), and Azotobacter sp inoculum 20 mL (A2). The experiment used 3 replications. The results showed that soil pH was increased by compost and antagonistic microorganisms. However, the effect of compost does not depend on the presence or absence of antagonistic microorganisms and vice versa. Al-exc concentrations were reduced by compost and microorganisms, but the effect of microorganisms only occurred in the soil without compost and in the treatment of 15 g/kg of soil (K1). Above these compost doses, the effect of microorganisms was not significant. The concentrations of available P and total soil N were increased by compost and microorganisms, and the effect of compost was greater if accompanied by the application of Azotobacter sp. Keywords: acid soil, antagonistic microorganisms, compost, sago‘ela’  

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