About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in AJ

  1. Vol. 63 No. 5, p. 702-705
     
    Received: Dec 5, 1970


 View
 Download
 Alerts
 Permissions
Request Permissions
 Share

doi:10.2134/agronj1971.00021962006300050013x

Iron and Zinc Response of Chlorotic Rice Grown on Calcareous Soils1

  1. D. G. Westfall,
  2. W. B. Anderson and
  3. R.J. Hodges2

Abstract

Abstract

Iron and Zn source and rate experiments were carried out in the field on soils where rice (Oryza sativa L.) strain yields had been reduced drastically in previous years by seedling chlorosis.

Soils where seedling chlorosis occurred were higher in pH, HCO3 and Ca content and lower in Fe and Zn than adjacent soils where normal growth occurred. Iron sulfate, alone or in combination with ZnSO4, was the most effective in correcting seedling chlorosis. A maximum yield increase of over 2,100 kg/ha was obtained with the application of 100 kg/ha of Fe (from Fe2(SO4)3). Organic sources of Fe and Zn were less effective in correcting needling chlorosis and producing yield increases.

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

Copyright © .