Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 7-Day Trial for You or Your Team.

Learn More →

Determination of Optimum Rate and Growth Stage for Foliar‐Applied Phosphorus in Corn

Determination of Optimum Rate and Growth Stage for Foliar‐Applied Phosphorus in Corn Abstract Foliar applications of fertilizer phosphorus (P) could improve use efficiency by minimizing soil applications. Nine experiments were conducted in 2002 and 2003 to determine foliar P rates and appropriate growth stages for application. Treatments comprised of 10 factorial combinations of three foliar P application timings and four rates of foliar P. Foliar application times were V4 (collar of fourth leaf visible), V8 (collar of eighth leaf visible), and VT (last branch of the tassel completely visible but silks not yet emerged) corn growth stages. Foliar P rates were 0, 2, 4, and 8 kg ha−1. Foliar P applied at the VT growth stage improved grain and forage P concentration, which was reflected in increased grain yield in some of the experiments. A foliar P rate of 8 kg ha−1 improved yield to some extent and forage and grain P concentration more than the smaller rates. The results suggest that foliar P could be used as an efficient P‐management tool in corn when applied at the appropriate growth stage and rate. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Communications in Soil Science and Plant Analysis Taylor & Francis

Determination of Optimum Rate and Growth Stage for Foliar‐Applied Phosphorus in Corn

Download PDF
18 pages

Loading next page...
 
/lp/taylor-francis/determination-of-optimum-rate-and-growth-stage-for-foliar-applied-43foal7WQy

References (45)

Publisher
Taylor & Francis
Copyright
Copyright Taylor & Francis Group, LLC
ISSN
1532-2416
eISSN
0010-3624
DOI
10.1080/00103620701328016
Publisher site
See Article on Publisher Site

Abstract

Abstract Foliar applications of fertilizer phosphorus (P) could improve use efficiency by minimizing soil applications. Nine experiments were conducted in 2002 and 2003 to determine foliar P rates and appropriate growth stages for application. Treatments comprised of 10 factorial combinations of three foliar P application timings and four rates of foliar P. Foliar application times were V4 (collar of fourth leaf visible), V8 (collar of eighth leaf visible), and VT (last branch of the tassel completely visible but silks not yet emerged) corn growth stages. Foliar P rates were 0, 2, 4, and 8 kg ha−1. Foliar P applied at the VT growth stage improved grain and forage P concentration, which was reflected in increased grain yield in some of the experiments. A foliar P rate of 8 kg ha−1 improved yield to some extent and forage and grain P concentration more than the smaller rates. The results suggest that foliar P could be used as an efficient P‐management tool in corn when applied at the appropriate growth stage and rate.

Journal

Communications in Soil Science and Plant Analysis – Taylor & Francis

Published: May 1, 2007

Keywords: Bt corn; corn; corn growth stage; foliar fertilization; KH 2 PO 4; phosphorus

There are no references for this article.