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 Stewart, B. A. Articles by Porter, L. K. Search for Related Content PubMed Articles by Stewart, B. A. Articles by Porter, L. K. Agricola Articles by Stewart, B. A. Articles by Porter, L. K.

Nitrogen-Sulfur Relationships in Wheat (Triticum aestivum L.), Corn (Zea mays), and Beans (Phaseolus vulgaris)¹

The nitrogen-sulfur ratios in the tops and roots of wheat (Triticum aestivum), corn (Zea mays), and beans (Phaseolus vulgaris) were studied in relation to N and S supplies in soil. Greenhouse studies showed that when S became limiting, additional N did not affect either the yield or protein level of the plants, but the nonprotein N (nitrates, amides, and amino acids) increased. There was a close relationship between the amounts of N and S metabolized in the plants. The data indicated that one part sulfur was required for every 12 to 15 parts nitrogen to insure maximum production of both dry matter and protein. As the use of nitrogen fertilizers increases, the possibility that S may become limiting also increases, and adequate consideration of S becomes necessary. This is especially true in greenhouse studies, where S may become limiting very quickly.

Key Words: Protein • Amides • Nitrate • Roots • Quality

² Formerly Research Soil Scientist, Fort Collins, Colorado, (now at the USDA Southwestern Great Plains Research Center, Bushland, Texas 79012) and Research Soil Scientist, USDA, Fort Collins, Colo.

Received for publication August 9, 1968.

This article has been cited by other articles:

				W. E. Riedell, J. L. Pikul Jr., A. A. Jaradat, and T. E. Schumacher Crop Rotation and Nitrogen Input Effects on Soil Fertility, Maize Mineral Nutrition, Yield, and Seed Composition Agron. J., July 7, 2009; 101(4): 870 - 879. [Abstract] [Full Text] [PDF]

				V. D. Zheljazkov, T. Astatkie, C. D. Caldwell, J. MacLeod, and M. Grimmett Compost, Manure, and Gypsum Application to Timothy/Red Clover Forage J. Environ. Qual., October 27, 2006; 35(6): 2410 - 2418. [Abstract] [Full Text] [PDF]

				L. K. Porter, F. G. Viets Jr., and G. L. Hutchinson Air Containing Nitrogen-15 Ammonia: Foliar Absorption by Corn Seedlings Science, February 18, 1972; 175(4023): 759 - 761. [Abstract] [PDF]