Persistent Link:
http://hdl.handle.net/10150/208610
Title:
Nitrogen Management Experiments for Upland and Pima Cotton, 1990
Author:
Silvertooth, J. C.; Clark, L. J.; Malcuit, J. E.; Carpenter, E. W.; Doerge, T. A.; Watson, J. E.
Issue Date:
1991
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Cotton: A College of Agriculture Report
Abstract:
Two field experiments were conducted in Arizona in 1990 at two locations ( Maricopa and Safford). The purposes of the experiments were to validate and refine nitrogen (N) fertilization recommendations for both Upland and Pima cotton. The experiments each utilized N management tools such as pre - season soil tests for NO₃⁻-N, in-season plant tissue testing (petioles) for N fertilirystatus, and crop monitoring to ascertain crop fruiting patterns and crop N needs. Results at both locations revealed a strong relationship between the crop fruit retention levels and N needs for the crop. This pattern was further reflected in final yield analysis in response to the N fertilization regimes used. At Maricopa, fruit retention levels were low, petiole NO₃⁻-N concentrations relatively high, and yield responses to higher and later applications of fertilizerN were negative. At Safford, fruit retention levels were higher, petiole concentrations of NO₃⁻-N reflected strong crop demand, and a positive response to rates of fertilizer N up to 170 lbs. N/acre was measured.
Keywords:
Agriculture -- Arizona; Cotton -- Arizona; Cotton -- Soil fertility; Cotton -- Management
Series/Report no.:
370087; Series P-87

Full metadata record

DC FieldValue Language
dc.titleNitrogen Management Experiments for Upland and Pima Cotton, 1990en_US
dc.contributor.authorSilvertooth, J. C.en_US
dc.contributor.authorClark, L. J.en_US
dc.contributor.authorMalcuit, J. E.en_US
dc.contributor.authorCarpenter, E. W.en_US
dc.contributor.authorDoerge, T. A.en_US
dc.contributor.authorWatson, J. E.en_US
dc.date.issued1991-
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 Arizona in 1990 at two locations ( Maricopa and Safford). The purposes of the experiments were to validate and refine nitrogen (N) fertilization recommendations for both Upland and Pima cotton. The experiments each utilized N management tools such as pre - season soil tests for NO₃⁻-N, in-season plant tissue testing (petioles) for N fertilirystatus, and crop monitoring to ascertain crop fruiting patterns and crop N needs. Results at both locations revealed a strong relationship between the crop fruit retention levels and N needs for the crop. This pattern was further reflected in final yield analysis in response to the N fertilization regimes used. At Maricopa, fruit retention levels were low, petiole NO₃⁻-N concentrations relatively high, and yield responses to higher and later applications of fertilizerN were negative. At Safford, fruit retention levels were higher, petiole concentrations of NO₃⁻-N reflected strong crop demand, and a positive response to rates of fertilizer N up to 170 lbs. N/acre was measured.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectCotton -- Arizonaen_US
dc.subjectCotton -- Soil fertilityen_US
dc.subjectCotton -- Managementen_US
dc.identifier.urihttp://hdl.handle.net/10150/208610-
dc.relation.ispartofseries370087en_US
dc.relation.ispartofseriesSeries P-87en_US
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