|
|||||
|
|
The impact of the nitrogen carryover effect on economic activity and the environment |
|
| Authors: | Wen-yuan Huang Russ W. Keim Yao-chi Lu N. D. Uri Terry Kelley |
| Affiliation: | (1) Economic Research Service, U.S. Department of Agriculture, Washington, DC 20005, USA, US;(2) Agricultural Research Service, U.S. Department of Agriculture, Beltsville, MD 20151, USA, US;(3) Department of Agricultural and Horticultural Systems Management, Massey University, Auckland, New Zealand, NZ |
| Abstract: | The economic and environmental consequences of soil nitrogen tests can have significant impacts on agricultural production. Some of these are explored here. The pre-side-dress soil N-test is evaluated for a hypothetical farmer growing corn at the ARS Sustainable Agriculture Demonstration Farm site in southern Maryland. For a farmer not currently using a soil N-test, adoption of this technology can lead to the enhancement of net farm income and the reduction in nitrogen loss to the environment. This will transpire only if the farmer is currently underestimating nitrogen carryover by more than 25% or applying nitrogen fertilizer based solely on an expected plateau-yield goal. Received: 13 February 1997 · Accepted: 13 May 1997 |
| Keywords: | Agricultural production Agriculture and the environment Soil nitrogen tests Technological change |
| 本文献已被 SpringerLink 等数据库收录！ | |