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 Wolkowski, R. P. Articles by Oplinger, E. S. Search for Related Content PubMed Articles by Wolkowski, R. P. Articles by Oplinger, E. S. Agricola Articles by Wolkowski, R. P. Articles by Oplinger, E. S.

Evaluation of Three Wetting Agents as Soil Additives for Improving Crop Yield and Nutrient Availability¹

The effect of soil applications of WEX, Basic H, and Amway Spray Adjuvant was evaluated using corn (Zea mays L.), soybean [Glycine max (L.) Merr.], or potato (Solanum tuberosum L.) as test crops at three Wisconsin locations. Each wetting agent is a nonionic surfactant, and claims or has claimed to improve crop yield, quality, and nutrient availability. WEX was evaluated at recommended fertilization levels. Amway and Basic H, in the corn experiments, were evaluated at varying levels of applied N. Basic H was evaluated on potatoes at 30, 50, and 100% of the entire recommended fertilization program. Although crop yield was increased by fertilization in all cases, no yield improvements were observed from the use of any wetting agent at any fertilizer rate. No differences in nutrient availability as evidenced by foliar nutrient content of N, P, and K or crop protein levels were observed in association with the application of a wetting agent.

Key Words: Nonconventional soil additive • Surfactant

² Program administrator and associate professor, Dep. of Soil Science, and professor, Dep. of Agronomy, respectively, Univ. of Wisconsin, Madison, WI 53706.

Received for publication November 26, 1984.