Persistent Link:
http://hdl.handle.net/10150/204493
Title:
A New Egg Sampling Plan for Pink Bollworm Reduced Insecticide Use by 35 Percent
Author:
Hutchinson, Bill; Beasley, Bud; Henneberry, Tom; Martin, Jeanette
Affiliation:
Western Cotton Research Laboratory; Cooperative Extension, University of California
Issue Date:
Mar-1987
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Cotton: A College of Agriculture Report
Abstract:
During 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.
Keywords:
Agriculture -- Arizona; Cotton -- Arizona; Cotton -- Insect investigations
Series/Report no.:
370069; Series P-69

Full metadata record

DC FieldValue Language
dc.titleA New Egg Sampling Plan for Pink Bollworm Reduced Insecticide Use by 35 Percenten_US
dc.contributor.authorHutchinson, Billen_US
dc.contributor.authorBeasley, Buden_US
dc.contributor.authorHenneberry, Tomen_US
dc.contributor.authorMartin, Jeanetteen_US
dc.contributor.departmentWestern Cotton Research Laboratoryen_US
dc.contributor.departmentCooperative Extension, University of Californiaen_US
dc.date.issued1987-03-
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalCotton: A College of Agriculture Reporten_US
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.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectCotton -- Arizonaen_US
dc.subjectCotton -- Insect investigationsen_US
dc.identifier.urihttp://hdl.handle.net/10150/204493-
dc.relation.ispartofseries370069en_US
dc.relation.ispartofseriesSeries P-69en_US
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