Comparisons of Insecticides on Fall Alfalfa Insect Populations, and Resultant Hay Yields and Quality

Persistent Link:
http://hdl.handle.net/10150/203869
Title:
Comparisons of Insecticides on Fall Alfalfa Insect Populations, and Resultant Hay Yields and Quality
Author:
Rethwisch, Michael D.; Reay, Mark; Berger, Lois; Hawpe, Erica; Grudovich, Jessica; Perez, Roger; Ramos, David
Issue Date:
Oct-2004
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Forage and Grain: A College of Agriculture and Life Sciences Report
Abstract:
Three insecticide active ingredients (cyfluthrin, indoxacarb, and zetacypermethrin) were evaluated for their efficacy on several insects found in fall alfalfa in the low desert. Both liquid and wettable formulations were included for both cyfluthrin and zetacypermethrin, and four rates of indoxacarb were applied. Insect pressures were fairly low throughout the study. Pyrethroid chemistries (cyfluthrin, zetacypermethrin) provided excellent control of threecornered alfalfa hoppers for seven days after application while cyfluthrin applications resulted in lowest numbers of pale striped flea beetles during the same time period. All chemistries resulted in excellent control of the South American bean thrips (Caliothrips phaseoli). Indoxacarb treatments resulted in significantly increased levels of spotted alfalfa aphid, thought due to a reduction of big eye bugs noted with usage of this chemistry. Wettable formulations of both cyfluthrin and zetacypermethrin resulted in significant hay yield increases (0.1 tons/acre) when compared with their liquid formulations. An inverse yield trend was noted with indoxacarb rate. Usage of the liquid cyfluthrin chemistry also resulted in an unexplained quality decrease in this experiment.
Keywords:
Agriculture -- Arizona; Grain -- Arizona; Forage plants -- Arizona; Alfalfa -- Arizona; Alfalfa -- Insects
Series/Report no.:
AZ1349; Series P-140

Full metadata record

DC FieldValue Language
dc.titleComparisons of Insecticides on Fall Alfalfa Insect Populations, and Resultant Hay Yields and Qualityen_US
dc.contributor.authorRethwisch, Michael D.en_US
dc.contributor.authorReay, Marken_US
dc.contributor.authorBerger, Loisen_US
dc.contributor.authorHawpe, Ericaen_US
dc.contributor.authorGrudovich, Jessicaen_US
dc.contributor.authorPerez, Rogeren_US
dc.contributor.authorRamos, Daviden_US
dc.date.issued2004-10-
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalForage and Grain: A College of Agriculture and Life Sciences Reporten_US
dc.description.abstractThree insecticide active ingredients (cyfluthrin, indoxacarb, and zetacypermethrin) were evaluated for their efficacy on several insects found in fall alfalfa in the low desert. Both liquid and wettable formulations were included for both cyfluthrin and zetacypermethrin, and four rates of indoxacarb were applied. Insect pressures were fairly low throughout the study. Pyrethroid chemistries (cyfluthrin, zetacypermethrin) provided excellent control of threecornered alfalfa hoppers for seven days after application while cyfluthrin applications resulted in lowest numbers of pale striped flea beetles during the same time period. All chemistries resulted in excellent control of the South American bean thrips (Caliothrips phaseoli). Indoxacarb treatments resulted in significantly increased levels of spotted alfalfa aphid, thought due to a reduction of big eye bugs noted with usage of this chemistry. Wettable formulations of both cyfluthrin and zetacypermethrin resulted in significant hay yield increases (0.1 tons/acre) when compared with their liquid formulations. An inverse yield trend was noted with indoxacarb rate. Usage of the liquid cyfluthrin chemistry also resulted in an unexplained quality decrease in this experiment.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectGrain -- Arizonaen_US
dc.subjectForage plants -- Arizonaen_US
dc.subjectAlfalfa -- Arizonaen_US
dc.subjectAlfalfa -- Insectsen_US
dc.identifier.urihttp://hdl.handle.net/10150/203869-
dc.relation.ispartofseriesAZ1349en_US
dc.relation.ispartofseriesSeries P-140en_US
All Items in UA Campus Repository are protected by copyright, with all rights reserved, unless otherwise indicated.