About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in CM

  1. Vol. 5 No. 1
     
    Published: May, 2006


    * Corresponding author(s): jbond@agcenter.lsu.edu
 View
 Download
 Alerts
 Permissions
 Share

doi:10.1094/CM-2006-0523-02-RS

Ratoon Rice Response to Nitrogen Fertilizer

  1. Jason A. Bond *a and
  2. Patrick K. Bollichb
  1. a 1373 Caffey Road, Rice Research Station, Louisiana State University AgCenter, Rayne 70578
    b 2310 Ben Hur Road, Central Research Station, Louisiana State University AgCenter, Baton Rouge 70820

Abstract

Field research was conducted for 2 years to determine the N fertilizer application rate producing maximum ratoon rice grain yields. The long-grain rice cultivars Cheniere, CL161, Cocodrie, and Cypress were grown using a delayed-flood, drill-seeded production system. Immediately following harvest of the main crop, N fertilizer at rates of 30, 60, 90, or 120 lb/acre was applied as urea. No ratoon rice lodging was observed in any site-year at any N fertilizer application rate. Ratoon days to 50% heading was delayed 1 day when the N fertilizer application rate was increased from 60 to 90 or 120 lb/acre. Ratoon rough rice yield increased significantly from 2390 to 2710 lb/acre as the N fertilizer application rate increased from 30 to 90 lb/acre, but increasing the N fertilizer application rate from 90 to 120 lb/acre did not improve ratoon rough rice yields. No ratoon rice lodging was observed in any site-year at any N fertilizer application rate. In this study, the N fertilizer application rate producing maximum ratoon rice yields in the Gulf Coast area of the United States was 90 lb/acre.

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

Copyright © 2006. © 2006 Plant Management Network.