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 Rappaport, B. D. Articles by Axley, J. H. Search for Related Content PubMed Articles by Rappaport, B. D. Articles by Axley, J. H. Agricola Articles by Rappaport, B. D. Articles by Axley, J. H.

Potassium Chloride for Improved Urea Fertilizer Efficiency¹

ABSTRACT

Muriate of potash (KCl), a major source of fertilizer K, can be applied in combination with urea [(NH₂)₂CO] to reduce ammonia (NH₃) volatilization. Addition of KCl in combination with urea to fertilize field crops should not increase fertilizer costs.

Laboratory investigations with a Klej loamy sand (Aquic Quartzipsamments) showed that a combination of 1 part urea with 1 part or greater of KCl (by weight) as a fertilizer solution reduced ammonia losses from 42% to 4.6% or less.

Application of 1 part of KCl to 1 part urea in a liquid fertilizer increased sorghum-sudan grass (Sorghum sudanese L.) hay yields over that of urea alone by 85 g m^–2 in field studies on a Galestown sandy loam (Psammentic Hapludults). Also, 0.77 parts of KCl to 1 part of urea was equally beneficial. Yield of field corn (Zea mays) on a Hagerstown silt loam (Typic Hapludalfs) was increased by urea in combination with potassium chloride over urea alone by 113 g m^–2.

¹ Scientific Article no. A-3467 and Contribution no. 6540 of the Maryland Agr. Exp. Stn., Dep. of Agronomy, Univ. of Maryland, College Park, MD 20742.

² Former Graduate Research Assistant and Professor, Dep. of Agronomy, Univ. of Maryland, respectively.

Received for publication May 24, 1983. Accepted for publication November 15, 1983.

This article has been cited by other articles:

				F.L. Wang and A.K. Alva Ammonium Adsorption and Desorption in Sandy Soils Soil Sci. Soc. Am. J., September 1, 2000; 64(5): 1669 - 1674. [Abstract] [Full Text]