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Title: PRELIMINARY RESULTS OF STRAWBERRY FUNGICIDE STUDY

Authors
item Constantin, R. - LA STATE UNIV. AG CENTER
item Quebedeaux, J. - LA STATE UNIV. AG CENTER
item Smith, Barbara
item Wedge, David

Submitted to: Louisiana State University Agricultural Center Strawberry Research
Publication Type: Experiment Station
Publication Acceptance Date: October 10, 2002
Publication Date: January 15, 2003
Citation: Constantin, R.J., Quebedeaux, J.P., Smith, B.J., Wedge, D.E. 2003. Preliminary results of strawberry fungicide study. Citrus, Fruit and Nut Research Summary 2001-2002. Louisiana State University Agricultural Center Strawberry Research Summary. 147:88-93.

Interpretive Summary: Posted on LSU Ag Center Strawberry Research website. Interpretive summary not required.

Technical Abstract: Thirteen fungicide treatments were evaluated for their disease control efficacy on the strawberry cultivar Camarosa at the Hammond Research Station, Hammond, LA during the 2002 fruiting season. Significant differences in yield occurred as a result of fungicide treatments. Highest yield was recorded from plots receiving Cyprodinil + Fludioxonil (Switch) fungicide treatment which also had the highest percentage of marketable fruit and average berry weight. Several treatments resulted in comparable yields in excess of 29,000 kg/ha including two new experimental compounds BAS 516 and BAS 500, Azoxystrobin (Quadris), Fenhexamid (Elevate), Fenhexamid + Captan, Captan, BAS 510 and Pyrimethanil (Scala). Mylclobutanil (Nova), Thiophanate-methyl (Topsin M), Harpin protein (Messenger), and basic copper sulfate (Cuprofix) had yields lower than from the control plots. No significant differences in yield of cull fruit were detected. The control plots had the highest incidence of diseases. BAS 516 treated plants had the lowest number of diseased fruit and the control had the most diseased fruit. Number of diseased fruit was low in the study due to a lack of rainfall. Pyrimethanil resulted in complete control of gray mold. No differences in foliar diseases or plant vigor were observed.

   
 
 
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