Effect of Plant Nitrogen Status on Effectiveness of Pix and Defoliants for Short-Season Cotton Production

Persistent Link:
http://hdl.handle.net/10150/208258
Title:
Effect of Plant Nitrogen Status on Effectiveness of Pix and Defoliants for Short-Season Cotton Production
Author:
Nelson, J. M.; Briggs, R. E.; Hart, G.
Issue Date:
1990
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Cotton: A College of Agriculture Report
Abstract:
A field study was conducted at the Maricopa Agricultural Center to determine the effect of nitrogen fertility level on the effectiveness of PIX and defoliants for short- season - cotton production. Increasing the nitrogen fertility level from 90 lbs N/A to 240 lbs N/A increased lint yields from 2.23 to 3.14 bales/A, respectively, in a 157-day growing season. FIX treatments did not promote earliness, and resulted in yield reductions. Increasing the application rates of Dropp from 0.1 to 0.2 lbs a.i./A and Def-6 from 0.75 to 1.13 lbs a.i./A resulted in increases in leaf drop. There was a significant linear decrease in the effectiveness of defoliants as the petiole NO3 N content increased from 850 to 2450 ppm.
Keywords:
Agriculture -- Arizona; Cotton -- Arizona; Cotton -- Crop management
Series/Report no.:
370081; Series P-81

Full metadata record

DC FieldValue Language
dc.titleEffect of Plant Nitrogen Status on Effectiveness of Pix and Defoliants for Short-Season Cotton Productionen_US
dc.contributor.authorNelson, J. M.en_US
dc.contributor.authorBriggs, R. E.en_US
dc.contributor.authorHart, G.en_US
dc.date.issued1990-
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalCotton: A College of Agriculture Reporten_US
dc.description.abstractA field study was conducted at the Maricopa Agricultural Center to determine the effect of nitrogen fertility level on the effectiveness of PIX and defoliants for short- season - cotton production. Increasing the nitrogen fertility level from 90 lbs N/A to 240 lbs N/A increased lint yields from 2.23 to 3.14 bales/A, respectively, in a 157-day growing season. FIX treatments did not promote earliness, and resulted in yield reductions. Increasing the application rates of Dropp from 0.1 to 0.2 lbs a.i./A and Def-6 from 0.75 to 1.13 lbs a.i./A resulted in increases in leaf drop. There was a significant linear decrease in the effectiveness of defoliants as the petiole NO3 N content increased from 850 to 2450 ppm.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectCotton -- Arizonaen_US
dc.subjectCotton -- Crop managementen_US
dc.identifier.urihttp://hdl.handle.net/10150/208258-
dc.relation.ispartofseries370081en_US
dc.relation.ispartofseriesSeries P-81en_US
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