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Arthropod Management Tests, 2016, 1–2 doi: 10.1093/amt/tsv102 Section E: Vegetable Crops BEAN (SNAP): Phaseolus vulgaris L. ‘Caprice’ Control of American Serpentine Leafminers in Beans, Fall 2012* Dakshina R. Seal and Catherine Sabines th University of Florida-IFAS, 18905 S.W. 280 St., Homestead, FL 33031, Phone: (305) 246-7001 ext 368, Fax: (305) 246- 7003 (dseal3@ufl.edu; csabines@ufl.edu) and Corresponding author, e-mail: dseal3ufl.edu Subject Editor: John Palumbo Bean (snap) | Phaseolus vulgaris American serpentine leafminer | Liriomyza trifolii This study was conducted to evaluate new insecticides for control- (Table 1). On the second sample date, all treatments significantly ling American serpentine leafminer on beans. “Caprice” bean was reduced leafminer mines when compared with the nontreated check. seeded in a Rockdale soil on 26 Nov 2012 in plots at the Tropical Following the third and fourth applications, Entrust and Delegate Research and Education Center research, Homestead, FL. The four significantly reduced leafminer mines when compared with the insecticide treatments were arranged in a RCB design with four rep- nontreated check. Movento did not differ from nontreated check in lications. Each replicate plot was two rows wide and 30 ft long. A reducing leafminer mines on the last two sampling dates. Among nonplanted 5 ft section of row separated each replication. all insecticide treatments, Entrust provided the most consistent re- Treatments were applied to the foliage with a CO operated back- duction of leafminer mines. Entrust and Delegate also significantly pack sprayer delivering 70 gpa at 30 psi. Application of all treat- reduced leafminer larvae following each application when com- ments was made weekly on four dates; 3, 13, and 20 Dec 2012 and pared with the nontreated check (Table 2). Following the first appli- 3 Jan 2013. Evaluation of treatments was made 48 h after each in- cations, mean numbers of larvae on Movento treated plants did secticide application date by randomly collecting 5 leaves from each not differ from nontreated check. On the second sampling date, plot. Leaves were then checked carefully for mines and leafminer all insecticide treatments significantly reduced larvae when larvae by using a binocular microscope at 10 magnification. compared with the nontreated check. Following the third and Numbers of mines and leafminer larvae per 5 leaf sample were re- fourth applications, there were no leafminer larvae on the Entrust- corded. Data were analyzed by using one-way analysis of variance. and Delegate-treated plants, whereas numbers of larvae on Means were separated by DMRT. the Movento treated plants did not differ from nontreated Following the first application, Entrust and Delegate signifi- check. No phytotoxicity symptoms were observed in any of the cantly reduced mines when compared with the nontreated check treatments. Table 1 Treatment/formulation Rate amt/acre 5 Dec 15 Dec 22 Dec 5 Jan Check — 1.45a 3.75a 1.80a 0.40a Entrust SC 5.0 fl oz 0.25b 0.10c 0.10c 0.00b Delegate WG 8.0 oz 0.40b 1.05b 0.10c 0.00b Movento 2F 5.0 fl oz 1.05a 0.85b 0.55b 0.65a Means within a column followed by the same letter are not statistically different (P> 0.05; DMRT). * This study was supported by Dow Agro-Sciences. V C The Author 2016. Published by Oxford University Press on behalf of the Entomological Society of America. 1 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com 2 Arthropod Management Tests, 2016, Vol. 42, No. 1 Table 2 Treatments/formulation Rate amt/acre 5 Dec 15 Dec 22 Dec 5 Jan Check — — 0.90a 2.35a 0.60a 0.30a Entrust SC 5.0 fl oz 0.15b 0.00c 0.05b 0.00b Delegate WG 8.0 oz 0.25b 0.10c 0.05b 0.05b Movento 2F 5.0 fl oz 0.65a 0.60b 0.40a 0.45a Means within a column followed by the same letter are not statistically different (P> 0.05; DMRT).
Arthropod Management Tests – Oxford University Press
Published: Jan 1, 2016
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