Effect of Oil-Cake and Amino Acid Fertilizer on Soil Bio-Chemical Properties and Pepper Yield

Abstract

A variety of organic materials has been currently used for the nutrient management in agricultural land. However, there is little study to understand the impact of organic materials for crop production with soil bio-chemical properties. The aim of this research was to investigate the effect of organic materials using pepper crop (Capsicum annuum). Using oil-cake and amino acid fertilizer as organic materials, both soil characteristics such as bio-chemical properties and microbial community and pepper yield were tested for three years. The pepper was cultivated with four different treatments; Control (No fertilizer), NPK (inorganic fertilizer), OCF (Oil-cake), and (OCF+AAF) (Oil-cake with amino acid fertilizer). The result of soil properties showed that available phosphate content and microbial biomass were the highest in NPK and organic matter content was higher in OCF and OCF+AAF than NPK. Biochemical properties including activities of β -glucosidase, acid phosphatase, alkaline phosphatase and arylsulfatase were not different among all treated samples. For pepper yield, OCF and OCF+AAF showed 10 -40% less than NPK. Therefore, this study concludes that organic materials affect microbial biomass linked with organic matter contents and alter the soil microbial community.

A Simple Method to Determine Soil Microbial Biomass Carbon by Facilitating Gaseous Diffusion of Chloroform into Pores

“…하지만, 일반적으로 토양의 유기 탄소 함량은 건조 질량의 1 -4% 수준이고, 토양 미생물은 다시 토양 유기 탄소 함량의 1 -3% 미만에 불과한 것으로 알려져 있다 (Anderson and Domsch, 1989;Sparling, 1992). 한편, 미세한 토양 미생물의 양을 정밀하게 측정하는 것은 한 토양의 건강성 혹은 질을 평가하는 데 있어서 필수적인 요소로 고려되고 있다 (Jordan et al, 1995;Yoon et al, 2019;Moon et al, 2020).…”