Persistent Link:
http://hdl.handle.net/10150/220521
Title:
Devoloping an Action Threshold for Citrus Thrips on Lemons in the Low Desert Areas of Arizona
Author:
Kerns, David L.; Maurer, Michael; Langston, Dave; Tellez, Tony
Issue Date:
Nov-1997
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Citrus Research Report
Abstract:
Commercial and University citrus groves were sampled over a two year period in an attempt to develop mathematical models capable of predicting fruit scarring based on the population of immature citrus thrips on susceptible fruit. Five predictive models were derived. One model correlated used citrus thrips populations from fetal fall to 2.0 in. diameter fruit. While in the other models, thrips populations were divided into four distinct fruit size cohorts. Four of the five models were statistically valid. Based on these models, lemons ½ in. in diameter, should be treated with insecticides when the number of immature CT reaches 1.5 per 10 pieces of fruit. While fruit > ½ should be treated if immature CT reach or exceed 2.0 per 10 fruit.
Keywords:
Agriculture -- Arizona; Citrus fruits -- Arizona; Lemons -- Arizona; Lemons -- Insects
Series/Report no.:
Series P-109; 370109
Sponsors:
Arizona Citrus Research Council

Full metadata record

DC FieldValue Language
dc.titleDevoloping an Action Threshold for Citrus Thrips on Lemons in the Low Desert Areas of Arizonaen_US
dc.contributor.authorKerns, David L.en_US
dc.contributor.authorMaurer, Michaelen_US
dc.contributor.authorLangston, Daveen_US
dc.contributor.authorTellez, Tonyen_US
dc.date.issued1997-11-
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalCitrus Research Reporten_US
dc.description.abstractCommercial and University citrus groves were sampled over a two year period in an attempt to develop mathematical models capable of predicting fruit scarring based on the population of immature citrus thrips on susceptible fruit. Five predictive models were derived. One model correlated used citrus thrips populations from fetal fall to 2.0 in. diameter fruit. While in the other models, thrips populations were divided into four distinct fruit size cohorts. Four of the five models were statistically valid. Based on these models, lemons ½ in. in diameter, should be treated with insecticides when the number of immature CT reaches 1.5 per 10 pieces of fruit. While fruit > ½ should be treated if immature CT reach or exceed 2.0 per 10 fruit.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectCitrus fruits -- Arizonaen_US
dc.subjectLemons -- Arizonaen_US
dc.subjectLemons -- Insectsen_US
dc.identifier.urihttp://hdl.handle.net/10150/220521-
dc.relation.ispartofseriesSeries P-109en_US
dc.relation.ispartofseries370109en_US
dc.description.sponsorshipArizona Citrus Research Councilen_US
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