Persistent Link:
http://hdl.handle.net/10150/211156
Title:
Late N management in durum wheat using crop models and canopy reflectance
Author:
Wang, Guangyao (Sam); Ottman, Michael; Thorp, Kelly
Affiliation:
School of Plant Sciences / Maricopa Ag Center, University of Arizona; School of Plant Sciences, University of Arizona; Arid-Land Ag Research Center, USDA-ARS, Maricopa, AZ
Issue Date:
Feb-2012
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Forage and Grain: A College of Agriculture and Life Sciences Report
Abstract:
Optimizing late N applications in durum wheat is highly needed to obtain adequate protein levels without affecting grain yield. A simple and rapid method for estimating crop yield at flowering stage and crop N status is required to make immediate N application decisions for increasing grain protein content. There were significant differences in grain yield and grain protein among N treatments and durum varieties. Using information on soil properties, weather data, crop management, and variety growth, DSSAT crop model predicted durum grain yield accurately. Canopy reflectance index NDVI at flowering time were closely correlated with crop yield and protein content. The results indicate the potential of using crop models and canopy reflectance index in durum wheat yield prediction and N management.
Keywords:
Agriculture -- Arizona; Grain -- Arizona; Forage plants -- Arizona; Durum -- Arizona
Series/Report no.:
AZ1559; Series P-162

Full metadata record

DC FieldValue Language
dc.titleLate N management in durum wheat using crop models and canopy reflectanceen_US
dc.contributor.authorWang, Guangyao (Sam)en_US
dc.contributor.authorOttman, Michaelen_US
dc.contributor.authorThorp, Kellyen_US
dc.contributor.departmentSchool of Plant Sciences / Maricopa Ag Center, University of Arizonaen_US
dc.contributor.departmentSchool of Plant Sciences, University of Arizonaen_US
dc.contributor.departmentArid-Land Ag Research Center, USDA-ARS, Maricopa, AZen_US
dc.date.issued2012-02-
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalForage and Grain: A College of Agriculture and Life Sciences Reporten_US
dc.description.abstractOptimizing late N applications in durum wheat is highly needed to obtain adequate protein levels without affecting grain yield. A simple and rapid method for estimating crop yield at flowering stage and crop N status is required to make immediate N application decisions for increasing grain protein content. There were significant differences in grain yield and grain protein among N treatments and durum varieties. Using information on soil properties, weather data, crop management, and variety growth, DSSAT crop model predicted durum grain yield accurately. Canopy reflectance index NDVI at flowering time were closely correlated with crop yield and protein content. The results indicate the potential of using crop models and canopy reflectance index in durum wheat yield prediction and N management.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectGrain -- Arizonaen_US
dc.subjectForage plants -- Arizonaen_US
dc.subjectDurum -- Arizonaen_US
dc.identifier.urihttp://hdl.handle.net/10150/211156-
dc.relation.ispartofseriesAZ1559en_US
dc.relation.ispartofseriesSeries P-162en_US
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