Persistent Link:
http://hdl.handle.net/10150/209601
Title:
Evaluation of a Feedback vs. Scheduled Approach to PIX Application
Author:
Fletcher, D. C.; Silvertooth, J. C.; Norton, E. R.; Unruh, B. L.; Lewis, E. A.
Issue Date:
Mar-1994
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Cotton: A College of Agriculture Report
Abstract:
Two field experiments were conducted in 1993 in Arizona to compare a scheduled approach (based on stage of growth) versus a feedback approach (based on vegetative status) to mepiquat chloride (PIX™) applications on Upland cotton (Gossypium hirsutum L.). PIX feedback treatments received no PIX applications due to plants lacking vegetative tendencies based upon height:node ratios (HNRs) and established baselines. Scheduled PIX applications ranged from 0.5pt. /acre to 0.75 pt./acre, and were applied at early bloom (approx. 1500 heat units after planting (HUAP), 86/55 °F threshold) and post early bloom (approx. 2000 HUAP). PIX treatments did consistently reduce plant heights compared to an untreated check. Statistically significant differences (P ≤ 0.05) in lint yield were observed among the treatments (feedback vs. scheduled)at the Safford location only. Evidence from these studies do reinforce the use of a feedback approach from the standpoint of conserving inputs and maintaining optimum growth control.
Keywords:
Agriculture -- Arizona; Cotton -- Arizona; Cotton -- Physiology; Cotton -- Growth regulators
Series/Report no.:
370096; Series P-96

Full metadata record

DC FieldValue Language
dc.titleEvaluation of a Feedback vs. Scheduled Approach to PIX Applicationen_US
dc.contributor.authorFletcher, D. C.en_US
dc.contributor.authorSilvertooth, J. C.en_US
dc.contributor.authorNorton, E. R.en_US
dc.contributor.authorUnruh, B. L.en_US
dc.contributor.authorLewis, E. A.en_US
dc.date.issued1994-03-
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalCotton: A College of Agriculture Reporten_US
dc.description.abstractTwo field experiments were conducted in 1993 in Arizona to compare a scheduled approach (based on stage of growth) versus a feedback approach (based on vegetative status) to mepiquat chloride (PIX™) applications on Upland cotton (Gossypium hirsutum L.). PIX feedback treatments received no PIX applications due to plants lacking vegetative tendencies based upon height:node ratios (HNRs) and established baselines. Scheduled PIX applications ranged from 0.5pt. /acre to 0.75 pt./acre, and were applied at early bloom (approx. 1500 heat units after planting (HUAP), 86/55 °F threshold) and post early bloom (approx. 2000 HUAP). PIX treatments did consistently reduce plant heights compared to an untreated check. Statistically significant differences (P ≤ 0.05) in lint yield were observed among the treatments (feedback vs. scheduled)at the Safford location only. Evidence from these studies do reinforce the use of a feedback approach from the standpoint of conserving inputs and maintaining optimum growth control.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectCotton -- Arizonaen_US
dc.subjectCotton -- Physiologyen_US
dc.subjectCotton -- Growth regulatorsen_US
dc.identifier.urihttp://hdl.handle.net/10150/209601-
dc.relation.ispartofseries370096en_US
dc.relation.ispartofseriesSeries P-96en_US
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