| Sequential NLEAP simulations to examine effect of early and late planted winter cover crops on nitrogen dynamics. (Nitrate Leaching and Economic Analysis ... from: Journal of Soil and Water Conservation | Digitalby Jorge A. Delgado (Author)
| List Price: | $5.95 | | | Available: | Available for download now |
| | Binding: | Digital | | Publisher: | Soil & Water Conservation Society | | Page Count: | 14 Pages | | Publication Date: | May 01, 1998 |
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Product Description
This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on May 1, 1998. The length of the article is 3985 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.From the author: In different studies conducted during the last 10 years, underground well water N[[O.sub.3].sup.-]-N concentrations have been found to exceed drinking water standards of 10 mg N[[O.sub.3].sup.-]-N [L.sup.-1] (10 ppm) for some areas of the San Luis Valley of south central Colorado. Some of these studies reported that N[[O.sub.3].sup.-]-N leaching is a factor that can contribute to these high well water N[[O.sub.3].sup.-]-N concentrations. Computer models are technology transfer tools that can assess impacts of best irrigation and nutrient management practices. Sequential computer simulations of the effects of winter cover crop planting date on residual soil N[[O.sub.3].sup.-]-N concentrations have not been previously conducted. The new version 1.2 of the Nitrate Leaching and Economic Analysis Package (NLEAP) model was used to conduct an assessment of the effect of winter cover crop planting date on conservation of water quality. The NLEAP model simulated a lettuce (Lactuca sativa L.) - winter cover wheat (Triticum aestivum L.) and rye (Secale cereale L.) (early- or late-planted) potato (Solanum tuberosum L.) rotation, grown on a center-pivot irrigated Kerber loamy sand. Winter cover crops increased the system N use efficiency (NUE) (P[less than]0.05). The effect of early-planted winter cover crops on conservation of water quality extended into the potato growing season, increasing NUE and reducing N[[O.sub.3].sup.-]-N leaching (P [less than] 0.05).Citation DetailsTitle: Sequential NLEAP simulations to examine effect of early and late planted winter cover crops on nitrogen dynamics. (Nitrate Leaching and Economic Analysis Package)Author: Jorge A. DelgadoPublication: Journal of Soil and Water Conservation (Refereed)Date: May 1, 1998Publisher: Soil & Water Conservation SocietyVolume: v53 Issue: n3 Page: p241(4)Distributed by Thomson Gale |
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