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dc.contributor.authorHutchinson, Bill
dc.contributor.authorBeasley, Bud
dc.contributor.authorHenneberry, Tom
dc.contributor.authorMartin, Jeanette
dc.date.accessioned2012-01-24T17:42:23Z
dc.date.available2012-01-24T17:42:23Z
dc.date.issued1987-03
dc.identifier.urihttp://hdl.handle.net/10150/204493
dc.description.abstractDuring the past two years we developed an egg sampling plan for the pink bollworm (PBW) to provide a more accurate index of moth (target stage) activity than conventional larval sampling. The plan requires that only the presence or absence of eggs laid on bolls be determined to decide when insecticide treatments are needed. Our objective in 1986 was to determine whether egg sampling vs. conventional treatment criteria (e.g., larval infestations, trap catches of male moths, and /or fixed -spray intervals) provided more optimal timing of insecticide applications in a 640-ac field test. Implementation of the egg sampling method in 8 of the 16 fields resulted in an average 35 percent seasonal reduction in insecticide use when compared to conventional methods. Despite the reduction in insecticide use, PBW larval infestations were not significantly different (P = 0.45) in fields samples for eggs vs. fields sampled for larvae from June to September. Yields were also not significantly different (P = 0.40) between the two sets of fields.
dc.language.isoen_USen_US
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.relation.ispartofseries370069en_US
dc.relation.ispartofseriesSeries P-69en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectCotton -- Arizonaen_US
dc.subjectCotton -- Insect investigationsen_US
dc.titleA New Egg Sampling Plan for Pink Bollworm Reduced Insecticide Use by 35 Percenten_US
dc.typetexten_US
dc.typeArticleen_US
dc.contributor.departmentWestern Cotton Research Laboratoryen_US
dc.contributor.departmentCooperative Extension, University of Californiaen_US
dc.identifier.journalCotton: A College of Agriculture Reporten_US
refterms.dateFOA2018-08-25T23:41:14Z
html.description.abstractDuring the past two years we developed an egg sampling plan for the pink bollworm (PBW) to provide a more accurate index of moth (target stage) activity than conventional larval sampling. The plan requires that only the presence or absence of eggs laid on bolls be determined to decide when insecticide treatments are needed. Our objective in 1986 was to determine whether egg sampling vs. conventional treatment criteria (e.g., larval infestations, trap catches of male moths, and /or fixed -spray intervals) provided more optimal timing of insecticide applications in a 640-ac field test. Implementation of the egg sampling method in 8 of the 16 fields resulted in an average 35 percent seasonal reduction in insecticide use when compared to conventional methods. Despite the reduction in insecticide use, PBW larval infestations were not significantly different (P = 0.45) in fields samples for eggs vs. fields sampled for larvae from June to September. Yields were also not significantly different (P = 0.40) between the two sets of fields.


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