TY - JOUR
T1 - Evaluation of nematicides for southern root-knot nematode management in lima bean
AU - Jones, Jake G.
AU - Kleczewski, Nathan M.
AU - Desaeger, Johan
AU - Meyer, Susan L.F.
AU - Johnson, Gordon C.
N1 - Funding Information:
I would like to thank everyone who lent a hand on the research projects, including assistance from Andy Kness, Heather Hickman, and University of Delaware greenhouse and farm staff. This work was funded by the National Institute of Food and Agriculture, Specialty Crop Research Initiative Grant Number 2012-51181-19776. J.J. conducted and designed experiments, analyzed data, and composed the manuscript. N.K. designed experiments, assisted with data analysis, and assisted with manuscript composition. G.J. assisted with experimental design and contributed suggestions and edits vital to completion of the experiments and manuscript. All other authors contributed edits and suggestions vital to the project and manuscript. Mention of trade names or commercial products in this publication is solely for the purpose of providing specific information and does not imply recommendation or endorsement by the U.S. Department of Agriculture. USDA is an equal opportunity provider and employer.
Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2017/6/1
Y1 - 2017/6/1
N2 - Southern root-knot nematodes (Meloidogyne incognita; RKN) significantly reduce lima bean (Phaseolus lunatus) yields. Chemical control options for RKN are limited. We evaluated the efficacy of new nematicidal products on RKN in lima bean experiments conducted in greenhouse (GH) and microplot (MP) settings. Treatments included fluensulfone at low and high labeled rates, fluopyram, spirotetramat, fluopyram + spirotetramat, oxamyl, ethoprophos, and an untreated, RKN-infested control. GH treatments were arranged in a factorial design, with application of nematode eggs (0, 6,000, or 30,000 eggs pot−1) crossed with nematicide treatment. MP treatments were arranged in a randomized complete block design and all plots were infested with RKN-infested tomato root tissue and soil grown in the greenhouse. Root galling, RKN egg and juvenile densities, and aboveground plant dry masses were determined and analyzed using Mixed Model ANOVA. In the GH trials, fluensulfone at both rates provided the greatest reduction in RKN galling compared to the untreated control, whereas spirotetramat treatments were not significantly different from the untreated control. In the MP 2 trial, all treatments except spirotetramat significantly reduced RKN populations and had significantly greater yields relative to the untreated control. Oxamyl, ethoprophos, and fluensulfone (1.64 L ai/ha and 2.34 L ai/ha) treatments had the highest yields in the microplot study. Based on these results, the two new nematicides, fluensulfone and fluopyram, show good potential for managing RKN in lima beans.
AB - Southern root-knot nematodes (Meloidogyne incognita; RKN) significantly reduce lima bean (Phaseolus lunatus) yields. Chemical control options for RKN are limited. We evaluated the efficacy of new nematicidal products on RKN in lima bean experiments conducted in greenhouse (GH) and microplot (MP) settings. Treatments included fluensulfone at low and high labeled rates, fluopyram, spirotetramat, fluopyram + spirotetramat, oxamyl, ethoprophos, and an untreated, RKN-infested control. GH treatments were arranged in a factorial design, with application of nematode eggs (0, 6,000, or 30,000 eggs pot−1) crossed with nematicide treatment. MP treatments were arranged in a randomized complete block design and all plots were infested with RKN-infested tomato root tissue and soil grown in the greenhouse. Root galling, RKN egg and juvenile densities, and aboveground plant dry masses were determined and analyzed using Mixed Model ANOVA. In the GH trials, fluensulfone at both rates provided the greatest reduction in RKN galling compared to the untreated control, whereas spirotetramat treatments were not significantly different from the untreated control. In the MP 2 trial, all treatments except spirotetramat significantly reduced RKN populations and had significantly greater yields relative to the untreated control. Oxamyl, ethoprophos, and fluensulfone (1.64 L ai/ha and 2.34 L ai/ha) treatments had the highest yields in the microplot study. Based on these results, the two new nematicides, fluensulfone and fluopyram, show good potential for managing RKN in lima beans.
KW - Ethoprophos
KW - Fluensulfone
KW - Fluopyram
KW - Meloidogyne incognita
KW - Phaseolus lunatus
KW - Spirotetramat
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U2 - 10.1016/j.cropro.2017.02.015
DO - 10.1016/j.cropro.2017.02.015
M3 - Article
AN - SCOPUS:85013993528
VL - 96
SP - 151
EP - 157
JO - Crop Protection
JF - Crop Protection
SN - 0261-2194
ER -