About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in AJ

  1. Vol. 61 No. 2, p. 267-271
     
    Received: Aug 9, 1968


 View
 Download
 Alerts
 Permissions
Request Permissions
 Share

doi:10.2134/agronj1969.00021962006100020027x

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

  1. B. A. Stewart and
  2. L. K. Porter2

Abstract

Abstract

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.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © .