The costs of obtaining a given level of accuracy in estimating yields of tree fruit might be lowered by the use of photographs or supplemental information on fruiting potential. A small-scale experiment of this sort is described for peaches and apples. A procedure for evaluating the relative...

The ability of insects to develop resistance to specific pesticides affects pesticide demand. However, the affect of resistance on demand cannot be observed or measured. This analysis substitutes an expression for the unobserved resistance variable in a pesticide demand model and then...

As part of its expanded research program, the Agricultural Estimates Division of AMS is exploring the possibilities of objective forecasts of yield for several crops. This paper summarizes results obtained from the first year's work on soybeans. Although these results must be regarded as...

This study provides ex ante estimates of the value to society of the U.S. Department of Agriculture's witch� weed program. Program objectives are to contain and eradicate witchweed, a semiparasitic plant which reduces corn and grain sorghum yields. Critical elements which determine the...

Cover; In This Issue written by Clark Edwards; Contents

Cover; In This Issue written by Gerald Schluter; Contents

Books Reviewed: "Farmers in the Market Economy"; "The Concept of Poverty"; "The Techniques of Urban Economic Analysis"; "Agriculture in Economic Development"; "Natural Resources and International Development"; "Introducing Social Change, A Manual for Americans Overseas"; "Oxford Regional...