Persistent Link:
http://hdl.handle.net/10150/211318
Title:
Soil and Plant Recovery of Labeled Fertilizer Nitrogen in Irrigated Cotton
Author:
Silvertooth, J. C.; Navarro, J. C.; Norton, E. R.; Galadima, A.
Issue Date:
2001
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Cotton: A College of Agriculture Report
Abstract:
Proper timing of fertilizer N applications in relation to crop uptake can serve to improve fertilizer efficiency in irrigated cotton. Earlier research has identified an optimum application window extending from the formation of first pinhead squares to peak bloom, which corresponds well with maximum crop uptake and utilization. Field experiments were conducted at the University of Arizona Marana Agricultural Center (Grabe clay loam soil) utilizing sidedress applications of ammonium sulfate with 5-atom % 15-N at pinhead square, early bloom, and peak bloom at a rate of 56 kg N/ha. The objective was to compare relative efficiencies in terms of fertilizer N uptake and recovery among these three times of application. Results indicate that all treatments averaged approximately 80% total fertilizer N recovery. Of the fertilizer N that was recovered, approximately 40 % was taken up by the plants and 60 % recovered in the soil, primarily in the top 60 cm of the soil profile.
Keywords:
Agriculture -- Arizona; Cotton -- Arizona; Cotton -- Soil fertility; Cotton -- Soil management
Series/Report no.:
AZ1224; Series P-125

Full metadata record

DC FieldValue Language
dc.titleSoil and Plant Recovery of Labeled Fertilizer Nitrogen in Irrigated Cottonen_US
dc.contributor.authorSilvertooth, J. C.en_US
dc.contributor.authorNavarro, J. C.en_US
dc.contributor.authorNorton, E. R.en_US
dc.contributor.authorGaladima, A.en_US
dc.date.issued2001-
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalCotton: A College of Agriculture Reporten_US
dc.description.abstractProper timing of fertilizer N applications in relation to crop uptake can serve to improve fertilizer efficiency in irrigated cotton. Earlier research has identified an optimum application window extending from the formation of first pinhead squares to peak bloom, which corresponds well with maximum crop uptake and utilization. Field experiments were conducted at the University of Arizona Marana Agricultural Center (Grabe clay loam soil) utilizing sidedress applications of ammonium sulfate with 5-atom % 15-N at pinhead square, early bloom, and peak bloom at a rate of 56 kg N/ha. The objective was to compare relative efficiencies in terms of fertilizer N uptake and recovery among these three times of application. Results indicate that all treatments averaged approximately 80% total fertilizer N recovery. Of the fertilizer N that was recovered, approximately 40 % was taken up by the plants and 60 % recovered in the soil, primarily in the top 60 cm of the soil profile.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectCotton -- Arizonaen_US
dc.subjectCotton -- Soil fertilityen_US
dc.subjectCotton -- Soil managementen_US
dc.identifier.urihttp://hdl.handle.net/10150/211318-
dc.relation.ispartofseriesAZ1224en_US
dc.relation.ispartofseriesSeries P-125en_US
All Items in UA Campus Repository are protected by copyright, with all rights reserved, unless otherwise indicated.