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| Blanco, German; Roka, Fritz M.. |
| The Florida Department of Citrus (DOC) is spending public funds to register an abscission agent compound (CMNP) with the U.S. EPA as part of its effort to enhance the private benefits associated with citrus mechanical harvesting. An abscission agent application should allow existing harvesting equipment to operate through the entire late season orange harvesting period. When estimating costs and benefits through 2018, the net present value of mechanically harvesting 25,000 acres is between $60.8 and $79.9 million, depending on price, production, and fruit loss scenarios. For any of the scenarios considered, the discounted value of abscission benefits with mechanical harvesting fully pays for the costs of registration and development within four years. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Abscission; Citrus; Mechanical harvesting; Cost benefit analysis; Agricultural Finance; Q14. |
| Ano: 2009 |
URL: http://purl.umn.edu/46753 |
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| Roka, Fritz M.; Hoag, Dana L.. |
| Produced as a joint product, economic theory suggests that manure value could influence livestock management decisions such as herd size and optimal market weights. This study examines the concept of manure and its connection with optimal replacement age or market weight. A model of a swine finishing operation representative of North Carolina conditions is developed. Over the range of conditions considered, manure value is negative and does not affect market weights. The marginal per head change in manure value is small relative to the marginal per head change in net returns from pork production. Further, economies of scale with respect to irrigation cause manure value to increase with herd size. |
| Tipo: Journal Article |
Palavras-chave: Manure value; Market weight; Response surface; Swine; Livestock Production/Industries. |
| Ano: 1996 |
URL: http://purl.umn.edu/15234 |
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