The Role of Teak Leaves (Tectona grandis), Rhizobium, and Vesicular-Arbuscular Mycorrhizae on Improving Soil Structure and Soil Nutrition

2nd Annual Applied Science and Engineering Conference

工业技术;自然科学

Yuliani^1 ; Rahayu, Y.S.^1

Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Surabaya, Indonesia^1

关键词: Calcareous soils;    Nutrient deficiency;    Soil decomposition;    Soil nutrition;    Soil structure;    Soil textures;    Tectona grandis;    Vesicular-arbuscular mycorrhizae;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/288/1/012158/pdf
DOI  :  10.1088/1757-899X/288/1/012158

来源: IOP

【 摘 要 】

Calcium is the largest mineral in calcareous soils. High levels of calcium carbonate lead to phosphate deposition. Nutrient deficiencies in calcareous soil (mainly Phosphate and Nitrogen) resulted only certain crops with a wide range of tolerances that can grow. Meanwhile, dynamics nutrient in calcareous soils also depend on the topography and decomposition of the litter in the growing vegetation. The purpose of this study was to describe the pattern of nutrient enhancement and soil-texture structures on calcareous soils after littering the teak leaves, Rhizobium and Vesicular Arbuscular Mycorrhiza. The research parameters were the concentration of N, P, K; C/N ratio, humid acid content, and soil structure, which measured at days 30, 60, and 85 of soil decomposition process. The results showed that at days 30, the texture and structure of the soil tend to be stable (porosity 31.2, DMR 1.93, moisture content 0.36, sandy clay) while at days 85 has been very stable (porosity 49.8; Water content 0.28, sandy clay). While C and N organic, N and K concentration at days 30 showed low value (C organic 1.03, N 0.12, K 0.49, C / N ratio 9). This condition is almost unchanged at days 85. While the P value shows very high value (60.53) at days 30 although after 60 days the P content showed a decrease.