Redistribution of nitrogen in an ecosystem due to long-term fertilization and continuous cropping |
| |
Authors: | K. K. Mathan K. Sankaran N. Kanakabushani K. K. Krishnamoorthy |
| |
Affiliation: | (1) Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, 641 003 Coimbatore, India |
| |
Abstract: | Summary When a leguminous crop like cowpea was included in a crop rotation of Ganga 5 maize, CO 7 ragi and CO 2 cowpea, the total nitrogen content in the soil was considerably increased even in the unfertilized plots. The leguminous crop fixed atmospheric nitrogen at the rate of 205 kg N/hectare/year. Potassium did not influence the status whereas phosphorus, over a background of N, improved it. Considerable quantity of N fixed was observed to have been redistributed in the soil which depended on the fertilization pattern. |
| |
Keywords: | Cowpea Crop rotation Legumes N fixation Redistribution |
本文献已被 SpringerLink 等数据库收录! |