My Account: Log In | Join | Renew
Search
Author
Title
Vol.
Issue
Year
1st Page

Abstract

 

This article in AJ

  1. Vol. 72 No. 6, p. 1066-1067
     
    Received: Feb 28, 1980
    Published: Nov, 1980


 View
 Download
 Alerts
 Permissions
 Share

doi:10.2134/agronj1980.00021962007200060049x

Residual Effects of MSMA on Sterility in Rice Cultivars1

  1. J. T. Gilmour and
  2. B. R. Wells2

Abstract

Abstract

In a study conducted in 1975, sterility in rice (Oryza sativa L.) cultivars grown on Crowley silt loam soil (Typic Albaqualf) amended with monosodium methanearsonate (MSMA) increased as cultivar susceptibility to straight-head increased. A midseason drain and dry treatment was found to decrease MSMA induced sterility. This study was a continuation of the experiment initiated in 1975 to evaluate the residual effects of the 1975 MSMA application on rice growth and yield 2 and 4 years later for two water management schemes. Two rice cultivars (‘Lebonnet’ and ‘Nova 76’ or ‘Mars’) of different straighthead resistance were grown in rotation with ‘Lee 74‘ soybean (Glycine max L. Merr.). Two years after application of MSMA, sterility and decreased yield were observed under continuous flood for the 11.2 kg arsenic/ha rate with the straighthead susceptible cultivar (Nova 76) being damaged more severely. No damage was found at this arsenic (As) rate for the midseason draining and drying treatment, a common straighthead control practice, or for either water management at the 1.1 kg As/ha rate. Four years after MSMA application, no sterility or yield reduction were noted in any treatment. These data suggest that where rice production is desired on a silt loam soil previously treated with MSMA crop rotation, in addition to cultivar selection and water management, could be used to minimize yield loses due to sterility.

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

Copyright © .