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 Google Scholar Google Scholar Articles by Parks, W. L. Articles by Walker, W. M. Search for Related Content PubMed Articles by Parks, W. L. Articles by Walker, W. M. Agricola Articles by Parks, W. L. Articles by Walker, W. M.

Effect of Soil Potassium, Potassium Fertilizer and Method of Fertilizer Placement upon Corn Yields¹

ABSTRACT

A quadratic regression model including selected linear interactions was fitted to yields of corn (Zea mays L.) grown on a Hartsells loam having varying K soil test levels and K fertilizer applications in the row and broadcast. Inclusion of 3 years of observation in the analysis produced no interaction of year and the parameters for K soil test level or K fertilizer application. There were significant single factor and interaction effects on corn yields due to soil test K levels and K fertilizer applied broadcast or in the row. The corn yield prediction equation illustrates the effect of row or broadcast K upon corn yield at different K soil test levels.

¹ Contribution from the Department of Agronomy, University of Tennessee, Knoxville.

² Professor of Agronomy, University of Tennessee; and formerly Assistant Extension Agronomist, University of Tennessee, presently Assistant Professor of Agronomy, University of Illinois.

Received for publication December 11, 1968. Accepted for publication February 5, 1969.