Persistent Link:
http://hdl.handle.net/10150/208668
Title:
Effect of Plant Nitrogen Status on Defoliation of Short-Season Upland Cotton
Author:
Nelson, J. M.; Hart, Gary
Issue Date:
Feb-1992
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Cotton: A College of Agriculture Report
Abstract:
Field studies have been conducted over a four year period at the Maricopa Agricultural Center to determine the influence of nitrogen (N) fertility level on the effectiveness of chemical defoliants for short- season cotton production. Excessive N resulted in dense foliage and cotton that was difficult to defoliate. When plants were deficient in N from mid-season to termination, defoliants were very effective, but lint yields were reduced. The effectiveness of defoliants decreased as the petiole NO₃-N content increased. The optimum fertility program for short-season cotton is one that provides sufficient N during the season to produce maximum lint yields, but allows the crop to become deficient in N at the end of the season, prior to chemical defoliation.
Keywords:
Agriculture -- Arizona; Cotton -- Arizona; Cotton -- Crop management
Series/Report no.:
370091; Series P-91

Full metadata record

DC FieldValue Language
dc.titleEffect of Plant Nitrogen Status on Defoliation of Short-Season Upland Cottonen_US
dc.contributor.authorNelson, J. M.en_US
dc.contributor.authorHart, Garyen_US
dc.date.issued1992-02-
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalCotton: A College of Agriculture Reporten_US
dc.description.abstractField studies have been conducted over a four year period at the Maricopa Agricultural Center to determine the influence of nitrogen (N) fertility level on the effectiveness of chemical defoliants for short- season cotton production. Excessive N resulted in dense foliage and cotton that was difficult to defoliate. When plants were deficient in N from mid-season to termination, defoliants were very effective, but lint yields were reduced. The effectiveness of defoliants decreased as the petiole NO₃-N content increased. The optimum fertility program for short-season cotton is one that provides sufficient N during the season to produce maximum lint yields, but allows the crop to become deficient in N at the end of the season, prior to chemical defoliation.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectCotton -- Arizonaen_US
dc.subjectCotton -- Crop managementen_US
dc.identifier.urihttp://hdl.handle.net/10150/208668-
dc.relation.ispartofseries370091en_US
dc.relation.ispartofseriesSeries P-91en_US
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