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| Mahoney, Paul; Olson, Kent D.; Porter, Paul M.; Huggins, David R.; Perillo, Catherine A.; Crookston, R. Kent. |
| When all strategies received conventional market prices, 4-year cropping sequences had greater net returns than 2-year sequences, and the organic input, 4-year strategy had the highest net return. Adding 50% of the estimated organic premium, the 4-year, organic strategy dominated all low- and high-purchased input strategies. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Crop Production/Industries; Risk and Uncertainty. |
| Ano: 2001 |
URL: http://purl.umn.edu/20691 |
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| Olson, Kent D.; Huggins, David R.; Porter, Paul M.; Perillo, Catherine A.; Crookston, R. Kent. |
| The objective of this paper is to improve our knowledge of how the traditional goals of income and risk reduction may affect farmers' choice of production methods especially those that are more environmentally sensitive. The distribution of net cash flows for alternative crop production methods or strategies were estimated. These distributions were compared to predict whether the traditional goals of income level and risk avoidance will be at odds with environmental goals or whether farmers can find production strategies that support both types of goals. Previous studies have used average yields and conditions to find that alternative tillage systems have lower costs that conventional systems (e.g., Smolik, Dobbs, and Rickerl; Weersink et al.) Salin,... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Crop Production/Industries. |
| Ano: 1996 |
URL: http://purl.umn.edu/14370 |
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| Baker, Dustin; Young, Douglas L.; Huggins, David R.; Pan, William. |
| This analysis determines profit maximizing N fertilization levels of hard red spring wheat (HRSW) for various wheat prices, N prices, and protein-based HRSW price premium/discount (P/D) structures for south eastern Washington data. Fertilizer response data consisting of rates of N fertilization (lb/ac), grain yield (bu/ac), and grain protein (%) were used to statistically estimate regression relationships that predicted yield and protein in response to N. All predicted net return maximizing N, protein, and yield levels were within the data range. Increasing P/D incentives for protein increased optimal N, the expected economic result. At the high P/D structures, the P/D structure dominated N and wheat prices in determining optimal N application levels.... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Crop Production/Industries. |
| Ano: 2003 |
URL: http://purl.umn.edu/36037 |
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| Chung, S.W.; Gassman, Philip W.; Huggins, David R.; Randall, G.W.. |
| The Erosion Productivity Impact Calculator (EPIC) model was tested using four years of field data collected at a site near Lamberton, Minnesota, under three different crop rotations: continuous corn (Zea mays L.) or CC, soybean (Glycine max L.)-corn (SC), continuous alfalfa (Medicago sativa L.) or CA. The model was evaluated by comparing measured versus predicted subsurface drainage flow (tile flow), nitrate-nitrogen (NO3-N) loss in tile flow, residual NO3-N in the soil profile, crop N uptake, and yield. Initially, EPIC was run using standard Soil Conservation Service (SCS) runoff curve numbers (CN2) suggested for the soil type at the site. Two different SC runs were performed with a nitrogen fixation parameter denoted as parm(7) set at either 1.0 or 0.3,... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Modeling; Water quality; Crop rotation; Tile drainage; Nitrate leaching; Fertilizer; Crop Production/Industries. |
| Ano: 2000 |
URL: http://purl.umn.edu/18479 |
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