MODELING CORN GRAIN YIELDS AND THE DECLINE IN SOIL PRODUCTIVITY IN RELATION TO SOIL EROSION IN NEW YORK STATE.

D. J. Timlin, V. A. Snyder, R. J. Wagenet, R. B. Bryant

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Shallow soils may be especially vulnerable to permanent reduction in productivity resulting from loss of available water holding capacity caused by soil erosion. A computer simulation model to evaluate the effect of soil erosion on corn grain yields in shallow soils of the Northeast is described. Easily obtainable soil and meteorological data are used as input. The model is based on the relationship between relative yields and the relative transpiration ratio. A simple soil water budget estimates actual transpiration on a daily basis and calculates a daily moisture stress index which is a function of the relative transpiration ratio. The model includes a root growth function and water uptake is dependent upon the relative root density in each layer. (Edited author abstract. )

Original languageEnglish (US)
Title of host publicationASAE Publication
PublisherASAE
Number of pages1
ISBN (Print)0916150690
StatePublished - Jan 1 1985

Publication series

NameASAE Publication

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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