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

Abstract

 

This article in AJ

  1. Vol. 100 No. 6, p. 1763-1768
     
    Received: Jan 23, 2008
    Published: Nov, 2008


    * Corresponding author(s): craig.bednarz@ttu.edu
 View
 Download
 Alerts
 Permissions
 Share

doi:10.2134/agronj2008.0036

Cotton Subsurface Drip and Overhead Irrigation Efficiency, Maturity, Yield, and Quality

  1. Jared R. Whitakera,
  2. Glen L. Ritchieb,
  3. Craig W. Bednarz *c and
  4. Cory I. Millsd
  1. a North Carolina State Univ., Williams Hall 4401D, P.O. Box 7620, Raleigh, NC 27695-7620
    b Univ. of Georgia, P.O. Box 748, Tifton, GA 31794
    c Texas Tech Univ. and Texas AgriLife Research, Box 42122, Lubbock, TX 79409
    d Texas Tech Univ., Box 42122, Lubbock, TX 79409. Manuscript T-4-593

Abstract

Subsurface drip (SSD) is used as a water-efficient alternative to overhead irrigation in many crops. This study compared soil water, water use, crop maturity, lint yield, and fiber quality of cotton (Gossypium hirsutum L.) grown with SSD to cotton grown with overhead irrigation. Three experiments were conducted at two Georgia locations in 2004 and 2005. Treatments consisted of overhead irrigated, nonirrigated, SSD matched to overhead irrigation rates (SSD Matched), and SSD based on soil water (SSD Fed). Cotton maturity was affected by irrigation treatment as nonirrigated cotton matured earliest, whereas overhead irrigated cotton matured latest. Subsurface drip irrigated cotton produced similar or higher lint yields than overhead irrigated cotton. Subsurface drip provided adequate soil water and irrigation amounts were 4.4, 8.2, and 0.5 cm less than overhead irrigation at the three locations. Water use efficiency (WUE) of cotton SSD irrigated was 23 and 15% higher than overhead-irrigated cotton in two experiments. Irrigation method did not substantially affect fiber quality; however, micronaire was higher in cotton from the SSD Fed treatment than cotton in the Overhead treatment in two locations. We conclude that SSD irrigation provides the same positive effects as overhead irrigation in cotton production while reducing irrigation water use and may allow for improved irrigation efficiency.

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

Copyright © 2008. American Society of AgronomyCopyright © 2008 by the American Society of Agronomy