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Evaluating Crop Production Systems by Energy Used
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English
Abstract
Current energy supplies are finite and are being used at an ever increasing rate. We can no longer evaluate alternatives on a cost basis alone. Crop production systems are no exception. We must now evaluate such systems on energy-use and environmental impact bases as well as on a cost basis.
This study was to develop and compare energy budgets for wheat, grain sorghum, and wheat-grain sorghum rotation tillage systems. Energy inputs considered included machinery and parts manufacturing, crop production fuel, and tire and herbicide manufacturing.
Our results show that energy requirements for crop production tillage systems vary considerably. Fuel consumed by tractors in performing the tillage operations was the largest input (39.6-82.5% of the total). Energy for herbicide, however, was almost as large as the fuel input for the grain sorghum no-till system. No-till systems use slightly more energy than till-plant tillage systems for grain sorghum (60.8 versus 54.5% of conventional). Wheat conservation tillage systems use less energy than do conventional tillage systems that include moldboard plowing (82.9% of conventional). One broadcast application of atrazine reduced the tillage energy for a wheat-grain-sorghum rotation system 16.7%.
Topic
Citation
Clark, S. and Johnson, W., "Evaluating Crop Production Systems by Energy Used," SAE Technical Paper 740647, 1974, https://doi.org/10.4271/740647.Also In
References
- Pimentel David et al. “Food Production and the Energy Crisis.” Science 182 443 449
- Nilson Erick B. Jones Harold E. Phillips W. H. “Grain Sorghum Production.” Cooperative Extension Bulletin C-477 September 1973
- Herendeen R. A. “The Energy Cost of Goods and Services.” Oak Ridge National Laboratory-NSF-EP-58 October 1973
- U.S. Office of Business Economics “Input-Output Structure of the U.S. Economy 1963.” United States Dept. of Commerce 1969
- “Agricultural Engineers Yearbook.” St. Joseph, Mich. American Society of Agricultural Engineers 1973
- Hall John R. “The Energy Crisis and the Tire Industry.” Keynote speech to Akron Rubber Group Oct. 5 1973 Rubber and Plastic News
- Obert E. T. “The Internal Combustion Engine.” Scranton, Pa. International Textbook Co. 1970