Journal ArticleDOI
Optimal Agricultural Pest Management with Increasing Pest Resistance
TLDR
In this paper, the effect of increasing pest resistance to insecticides on the optimal control of a pest population is investigated by constructing a single-pest, single-crop management model and analyzing the resulting optimality conditions.Abstract:
The effect of increasing pest resistance to insecticides on the optimal control of a pest population is investigated by constructing a single-pest, single-crop management model and analyzing the resulting optimality conditions. Use of insecticides under these conditions results in both monetary costs and user costs. It is suggested that growers do not generally consider these user costs and therefore do not obtain maximum profits. The dynamic formulation of the model results in an extension of the literature dealing with the "economic-threshold," which under reasonable conditions is shown to be increasing during the course of the season.read more
Citations
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Journal ArticleDOI
Economic Injury Levels in Theory and Practice
TL;DR: The ElL, defined as "the lowest population density that will cause economic damage," has been used most often to support management decisions with short-range objectives, i.e. a one-season or less planning horizon at the farm level.
BookDOI
Pesticide resistance in arthropods.
TL;DR: A meta-modelling and evaluation of resistance management tactics and the role of population genetics in resistance research and management are reviewed.
Journal ArticleDOI
Colorado Potato Beetle Resistance to Insecticides
TL;DR: Still limited understanding of beetle biology, its flexible life history, and grower reluctance to adopt some of the resistance management techniques create impediments to successful resistance management.
Journal ArticleDOI
Wicked evolution: Can we address the sociobiological dilemma of pesticide resistance?
TL;DR: Current evidence suggests that insect and weed evolution may outstrip the authors' ability to replace outmoded chemicals and other control mechanisms, and it is necessary to address the mix of ecological, genetic, economic, and sociopolitical factors that prevent implementation of sustainable pest management practices.
Journal ArticleDOI
Genetically Engineered Crops in the United States
TL;DR: The report finds that, although the pace of research and development (measured by the number of USDA-approved field tests) peaked in 2002, other measures show that biotech firms continue to develop new GE seed varieties at a rapid pace.
References
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Journal ArticleDOI
On the Timing and Application of Pesticides
TL;DR: A two-variable model directed at the problems of optimal timing and pesticide application as well as optimal pest population level is presented.
Journal ArticleDOI
A Decision Theoretic Approach to Crop Disease Prediction and Control
TL;DR: In this article, Bayesian decision theory procedures are used to arrive at optimal crop disease control practices, and subjective probabilities of disease loss intensity are measured and used in the decision model, and the optimal pesticide use actions are computed for three different objective functions, maximum subjective expected returns, mean-standard deviation of returns, and maximum expected returns with a minimum income side condition.