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A Simultaneous Equation Model of the Economic-Ecologic System in Citrus Groves*

Published online by Cambridge University Press:  28 April 2015

Jonq-Ying Lee
Affiliation:
Food and Resource Economics Department at the University of Florida
Max R. Langham
Affiliation:
Food and Resource Economics Department at the University of Florida

Extract

In 1964, 89 percent of the citrus acreage in the U.S. was treated with pesticides. The percentage increased to 97 percent in 1966. Total expenditures for pesticides during the two years were 13.8 and 21.3 million dollars, respectively. Expenditures on a per acre basis were $12.74 and $18.82, respectively, in these years. The trend in pesticide use on citrus pest control has been upward.

The increased usage indicates that pesticides are recognized by growers as important inputs to increase output and/or improve fruit quality. The negative side effects of pesticides on the environment are also being increasingly recognized.

Type
Research Article
Copyright
Copyright © Southern Agricultural Economics Association 1973

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Footnotes

*

Research on which this paper was based was supported in part by the Farm Production Economics Division, Economic Research Service, U. S. Department of Agriculture.

References

[1]Clarke, George L., Elements of Ecology, New York, John Wiley & Sons, Inc., 1954.CrossRefGoogle Scholar
[2]Goldberger, A. S., Impact Multipliers and Dynamic Properties of the Klein-Goldberger Model, Amsterdam, North-Holland Publishing Company, 1959.Google Scholar
[3]Goldberger, A. S.Econometric Theory, New York, John Wiley & Sons, Inc., 1964.Google Scholar
[4]Lee, J., “A Simultaneous Equation Model of the Economie-Ecologie System in Citrus Groves,” unpublished M.S. thesis, University of Florida, 1972.Google Scholar
[5]Parvin, D. W. Jr., “Effect of Weather on Orange Supplies,” unpublished Ph.D. dissertation, University of Florida, 1970.Google Scholar
[6]Simanton, W. A., “Operation of an Ecological Survey for Florida Citrus Pest,” Journal of Economic Entomology, Vol. 55, pp. 105112, Feb. 1962.CrossRefGoogle Scholar
[7]Simanton, W. A., “Use and Value of a Continuous Field Survey in the Control of Citrus Pest,” Proceedings First International Citrus Symposium, Vol. 2, pp. 889896, 1969.Google Scholar
[8]Smith, R. L., Ecology and Field Biology, New York, Harper and Row Publishers, 1966.Google Scholar
[9]U.S. Department of Agriculture, Economic Research Service, “Farmers' Pesticides Expenditures in 1966,” Agricultural Economic Report, No. 192, Sept. 1970.Google Scholar
[10]U.S. Department of Agriculture, Statistical Reporting Service, Agricultural Prices - Annual Summary, 1964 through 1968.Google Scholar