HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Bauder, J. W. Articles by Randall, G. W. Search for Related Content PubMed Articles by Bauder, J. W. Articles by Randall, G. W. Agricola Articles by Bauder, J. W. Articles by Randall, G. W.

Regression Models for Predicting Corn Yields from Climatic Data and Management Practices¹

ABSTRACT

The purpose of this study was to determine the relationship between climatic factors, management-controlled factors, and corn (Zea mays L.) grain yield in the northern Corn Belt. Harvest grain moisture and early plant growth were also investigated. Models were developed to quantify the effect of variations in seasonal climatic conditions and annual management practices on corn grain yield. The study was conducted on Webster clay loam, a fine-loamy, mixed mesic Typic Haplaquoll in south-central Minnesota.

Soil-stored moisture and early and mid-season precipitation were significantly related to corn grain yield. Other inputs included date of planting, final populations, and previous crop residue on the soil surface at planting time. The models accounted for 86 to 89% of the variability in corn grain yield and 93% of the variability in grain moisture percentage over a 5-year period, where five different tillage practices were compared. The models provide a simplistic means of identifying and demonstrating the significance of management practices that maximize yields. They also provided a means of approximating grain yield potential.

Key Words: yield model • available water • tillage model • weather • population • planting date

¹ Contribution from the Dep. of Soil Science, Univ. of Minnesota Agric. Exp. Stn., St. Paul, as Journal Series no. 11,615. Received 6 Mar. 1981. Approved 21 Sept. 1981.

² Former Associate Professor, Univ. of Minnesota, Now Extension Soil Scientist, Montana State Univ.; and Soil Scientist, Southern Exp. Stn., Univ. of Minnesota, Waseca, respectively.

This article has been cited by other articles:

				N. E. Derby, F. X. M. Casey, R. E. Knighton, and D. D. Steele Midseason Nitrogen Fertility Management for Corn Based on Weather and Yield Prediction Agron. J., March 1, 2004; 96(2): 494 - 501. [Abstract] [Full Text] [PDF]