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Economic Analysis of Phosphorus Applications under Variable and Single-Rate Applications in the Bothaville District AgEcon
Maine, Ntsikane; Nell, Wilhelm T.; Lowenberg-DeBoer, James; Alemu, Zerihun Gudeta.
Variable-rate (VR) application of inputs in South African cash crop production is mainly concerned with fertilizer and lime, and this indicates the importance of these inputs in cash crop production. However, the profitability of VR application of inputs has not yet been investigated under South African conditions. This paper studies the maize yield response to variable-rate application of phosphorus (P) and the profitability thereof in South Africa, on the basis of data collected on a 104-hectare experimental field on a farm in the Bothaville district. The strip-plot design of 180 strips was used for this on-farm research experiment. This design involved treatments that run in the same direction across the field as planting and harvesting. The objective...
Tipo: Journal Article Palavras-chave: Precision agriculture; Precision farming; Site-specific phosphorus management; Variable-rate application; Fertilizer; Yield response; South Africa; Crop Production/Industries.
Ano: 2007 URL: http://purl.umn.edu/7047
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Factors Affecting Hay Supply and Demand in Tennessee AgEcon
Bazen, Ernest F.; Roberts, Roland K.; Travis, John; Larson, James A..
Understanding the interactions between supply and demand for hay is important because of hay’s significance to the agricultural sector and economy, and because hay is an important crop on highly erodible soils. As an example, Tennessee has the most erodible cultivated cropland in the United States (Denton, 2000), nearly half of the state’s current CRP acreage contracts are set to expire in 2007 (U.S. Department of Agriculture, 2006), and hay is one of the most economically important crops produced in the state (U.S. Department of Agriculture, 2004). Cross (1999) attributed the upward trend in Tennessee hay acreage since 1980 to an increasing number of farmers who were searching for alternative production activities, such as hay, pasture and livestock, to...
Tipo: Conference Paper or Presentation Palavras-chave: Acreage response; Derived demand; Elasticities; Hay; Inverse demand function; Price flexibilities; Yield response; Crop Production/Industries; Demand and Price Analysis; D.
Ano: 2008 URL: http://purl.umn.edu/6889
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The Role of Yield-Price Correlation in Setting Optimal N Application Rates for Corn Production AgEcon
Roberts, Matthew C.; Mullen, Robert W.; Prochaska, Steve.
Replaced with revised copy of paper 1/16/07.
Tipo: Conference Paper or Presentation Palavras-chave: Nitrogen fertilizer; Yield response; EONR; Farm Management.
Ano: 2006 URL: http://purl.umn.edu/21380
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