TY - JOUR
AU - Terumasa, Takahashi
AB - Previous research shows that nitrogen (N) dynamics, including N starvation, is related to the mineralizable carbon (C) added to the soil. This study was conducted to determine whether the application of mineralizable carbon-rich green waste compost made from pruning materials (PMC) causes soil nitrogen (N) starvation, thus inevitably limiting the plant growth, and how to reduce the negative effect of PMC application on plant growth. Cultivation experiments were conducted to investigate the specific effects of PMC application on plant growth at different application rates and under different soil microbial activities. Forest soil, forest soil and subsoil mixture, subsoil, subsoil and sand mixture, and sand were used in the descending order of microbial activity. Nitrogen (N) starvation was not apparent when PMC compost was applied at ≤ 15% (v/v) to forest topsoil that contained high microbial activity. Conversely, application of PMC compost at ≥ 15% (v/v) to subsoil or sand, each with low microbial activity, resulted in N starvation that continued for approximately 1 year. In soils with high microbial activity, the application of appropriate amounts of PMC promoted plant growth. In soils with low microbial activity, the application of PMC inhibited plant growth in the early stages, but the beneficial effects of PMC application on plant growth were confirmed later. Under any soil microbial activity conditions, soil N starvation disappeared within a year. During the application of PMC to soils with low microbial activity, the effects of nitrogen starvation can be avoided by applying nitrogen fertilizer or fallow for approximately 1 year after application.
TI - Effects of Applying Recycled Urban Green Waste Compost Made from Pruning Materials to Soil on the Growth of Plants
JF - Journal of Soil Science and Plant Nutrition
DO - 10.1007/s42729-021-00717-4
DA - 2022-03-01
UR - https://www.deepdyve.com/lp/springer-journals/effects-of-applying-recycled-urban-green-waste-compost-made-from-qXpevSoMIy
SP - 1088
EP - 1097
VL - 22
IS - 1
DP - DeepDyve
ER -