Evaluation of the 1982 corn objective yield validation survey
1984
Warren, F.B. | Steele, R.J.
Extract: Objective estimates of yield from 16 plots in each of 48 corn fields in Iowa and Missouri are compared with yields derived from weighed production. Potential biases in farmer reported acreage and yield are discussed. The effect on estimated yield of a time lapse greater than seven days between final preharvest observations and actual harvest is examined. The relationship between estimated harvest loss and the time elapsed between final preharvest observations and postharvest gleanings is studied. Some changes in operational objective yield procedures are recommended.
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