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

Abstract

 

This article in AJ

  1. Vol. 87 No. 3, p. 503-507
     
    Received: Sept 27, 1994
    Published: May, 1995


    * Corresponding author(s):
 View
 Download
 Alerts
 Permissions
 Share

doi:10.2134/agronj1995.00021962008700030017x

Sod Regrowth of St. Augustinegrass after Preemergence Herbicide Application

  1. Lambert B. McCarty ,
  2. D. Wayne Porter and
  3. Daniel L. Colvin
  1. Dep. of Environmental Horticulture, P.O. Box 110670, Univ. of Florida, Gainesville, FL 32611-0670

Abstract

Abstract

St. Augustinegrass [Stenotaphrum secundatum (Walt.) Kuntze] sod production involves stolon regeneration from strips left from the previous harvest. Field studies were conducted to evaluate stolon regrowth and rooting following preemergence application of herbicides, lterbicities evaluated were atrazine [6-chloro-N-ethyl-N'-(1-methylethyl)-l,3,5-triazine-2,4-diamine], dithiopyr [S,S-dimethyl 2-(difluoromethyl)-4-(2-methylpropyl)-6-(trifluoromethyl)-3,5-pyrldinecarbothioate], isoxaben [N-[3-(1-ethyl-l-methylpropyl)-5-isoxazolyl]-2,6-dimethoxybenzamide], metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-l-methylethyl) acetarnlde], oxadlazon I3-I2,4-dichloro-5-(l-methylethoxy)phenyl]-5-(1,1-dimethylethyl)-l,3,4-oxadiazol-2-(3H)-one], pendimethalin [N-(1-ethylpropyl)-3,4-dimethyl-2,6-dinitrobenzenamine] and the combination of metolachlor plus atrazine. Acceptable ‘Floratam’ St. Augustinegrass color was noted following all treatments. Twelve to 24% of the stolons were unrooted 4 to 8 mo after application following treatment with 0kg a.i. ha−1 dithiopyr. Five to 22% of the stolons were unrooted 8 mo after treatment with isoxaben at 1.1 kg ha−1 and pendimethalin at 2.2 kg ha−1. Data collected after 8 mo showed stolon rooting to be similar to the untreated for all treatments. Turfgrass density was unaffected or slightly improved (≈25%) by herbicide treatment and was highest with oxadiazon, metolaehlor, and metolachlor plus atrazine treatments. Neither turfgrass tensile strength nor root dry weight was reduced 14 mo after treatment with any of the herbicides evaluated. Although shortterm (2 to 4 mo) negative effects followedithiopyr, isoxaben, and pendimethalin treatments, long-term (≥ 8 mo) effects were transient.

Contribution from the Florida Agric. Exp. Stn. J. Ser. No. R-04109.

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

Copyright © .