|
|
|
| Registros recuperados: 165 | |
|
| |
|
|
| Velandia, Margarita M.; Rejesus, Roderick M.; Segarra, Eduardo; Bronson, Kevin. |
| This paper develops a management zone delineation procedure based on a spatial statistics approach and evaluates its economic impact for the case of Texas cotton production. With the use of an optimization model that utilizes a yield response function estimated through spatial econometric methods, we found that applying variable N rates based on the management zones delineated would result in higher cotton yields and higher net returns, above Nitrogen cost, relative to uniformly applying a single N rate for the whole field. In addition, a variable rate N application using the delineated management zones produced higher net returns, above Nitrogen cost, relative to a variable N rate system where the zones are based solely on landscape position. This is... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Management Zones; Exploratory Spatial Data Analysis; Site-Specific Nitrogen Management; Cotton Precision Agriculture.; Crop Production/Industries; Q1; Q16. |
| Ano: 2006 |
URL: http://purl.umn.edu/35387 |
| |
|
| |
|
| |
|
|
| Smith, Vincent H.. |
| In this report, important wheat quality attributes and their links to varietal differences are identified, and their technical and economic importance to the milling and baking industries is examined. Wheat class and grading systems used in the United States and other countries are described, and the relationships between wheat classes and wheat varieties and between physical and wholesomeness attributes and grades are identified. The per bushel prices received by farmers' for their wheat depend on the classes and grades of wheat they produce. However, wheat classes and, to some degree, grades are linked to varietal choices and those choices also affect average per acre yields and year-to-year yield variability. Therefore, this report also examines the... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Grain trade; Grain quality; Wheat trade; Wheat quality; U.S. wheat; International Relations/Trade; F1; Q1. |
| Ano: 2000 |
URL: http://purl.umn.edu/29174 |
| |
| Registros recuperados: 165 | |
|
|
|
