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Pressures and Preferences Affecting Willingness to Apply Beef Manure on Crops in the Colorado High Plains AgEcon
Hoag, Dana L.; Lacy, Michael G.; Davis, Jessica.
Little is known about producers' willingness to use manure. Past studies have focused on substitutability for fertilizers. We surveyed crop producers in a cattle-dense region of the Colorado Plains about whether and why they apply manure, focusing on how pressures (like owning cattle) or preferences (pro and con) affect their adoption. Using logistic regression, findings show that pressure and preference (PS/PF) significantly affect adoption. A producer with high PS/PF was 10 times more likely to use manure than one with low PS/PF. Policy and decision makers can use such findings to inform education and policy aimed at increasing the land application of manure.
Tipo: Journal Article Palavras-chave: Cattle; Economic benefits; Economic costs; Management; Manure application; Crop Production/Industries.
Ano: 2004 URL: http://purl.umn.edu/30915
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A general-purpose method for two-group randomization tests AgEcon
Kaiser, Johannes; Lacy, Michael G..
We outline a novel approach to calculate exact p-levels for two-sample randomization tests. The approach closely resembles permute in its applications, with the main difference being that the results are approximated only if the execution time needed to calculate exact p-levels would exceed a specified maximum. We demonstrate its use by deriving p-levels for the significance of Somers’ D, the coefficient of variation, the difference in means and in medians, and the difference in two multinomials.
Tipo: Article Palavras-chave: Tsrtest; Mwtest; Fptest; Somersdtest; Cvtest; Vartest; Randomization tests; Monte Carlo; Two-sample problem; Research Methods/ Statistical Methods.
Ano: 2009 URL: http://purl.umn.edu/122702
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