Nutrient Dynamics in Recycled Organic Amended Alkaline Soil
Nutrient Dynamics in Recycled Organic Amended Alkaline Soil作者机构：Department of Soil and Environmental Sciences The University of Barishal Barishal 8254 Bangladesh
出 版 物：《Open Journal of Soil Science》 (土壤科学期刊（英文）)
年 卷 期：2022年第12卷第3期
页 面：83-95页
学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学]
主 题：Compost Vermicompost Incubation Study Nitrogen Phosphorus and Potassium
摘 要：A variety of wastes are generated due to human activities. Organic waste usage in agriculture plays a significant role in the steady supply of plant nutrients through improving soil quality. An in vitro incubation study was conducted to measure the release of the major nutrients viz. available nitrogen (N), phosphorus (P), and potassium (K) in alkaline soil amended by recycled organic soil conditioners. The soil was amended by compost (Cm) and vermicompost (VC) @5 tha−1 and a mixture of compost and vermicompost (Cm + VC) @2.5 tha−1. Chemical fertilizers (Cf) were added @of 98.842 kg⋅ha−1 of urea and 64.99 kg⋅ha−1 of triple superphosphate (TSP), with amended soils being incubated for 120 days maintaining 50% field moisture holding capacity. Due to the sufficient content of potassium in experimental soil for plant growth, extra potassium was not added. Available soil N, P, and K were determined at every 0, 15, 30, 45, 60, 90, and 120 days of incubation. The highest available N and K release was found in VC treated soils at the incubation period of 45 days. On the other hand, the highest P release was recorded in Cm treated soils at the incubation period of 45 days. In this experiment, the addition of Cm, VC and Cm + VC showed better release of cumulative plant available N, P and K than either control (C) or Cf and were arranged as VC Cm Cm + VC Cf C, Cm Cm + VC VC Cf C and Cm + VC VC Cm C Cf for N, P and K, respectively. The results of this experiment revealed that the addition of compost and/or vermicompost is predominant over chemical fertilizer in supplying of major nutrients for crops in alkaline soil.
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