Persistent Link:
http://hdl.handle.net/10150/220557
Title:
Heat Unit Based Crop Coefficient for Grapefruits Trees
Author:
Hla, A. K.; Martin, E. C.; Waller, P.; Slack, D. C.
Issue Date:
Sep-1996
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Citrus Research Report
Abstract:
Using portable sap flow sensors, the onset and volume of sap moving up the branches of grapefruit (Citrus Paradisi Macfadyen) trees was monitored on an hourly basis. Reference evapotranspiration (ETo) data was obtained from The Arizona Meteorological Network (AZMET). Crop evapotranspiration (ETc) was estimated from soil moisture measurements using a neutron probe. The threshold temperature limits were delineated from an evaluation of the hourly sap flow responses to cold winter and extreme summer temperatures. The heat based crop curve was derived from a correlation of the crop coefficients with heat unit over one crop year. The heat based crop coefficients were found to be similar to crop coefficients derived by other researchers.
Keywords:
Agriculture -- Arizona; Citrus fruits -- Arizona; Grapefruits -- Arizona
Series/Report no.:
Series P-105; 370105
Sponsors:
Citrus Research Council

Full metadata record

DC FieldValue Language
dc.titleHeat Unit Based Crop Coefficient for Grapefruits Treesen_US
dc.contributor.authorHla, A. K.en_US
dc.contributor.authorMartin, E. C.en_US
dc.contributor.authorWaller, P.en_US
dc.contributor.authorSlack, D. C.en_US
dc.date.issued1996-09-
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalCitrus Research Reporten_US
dc.description.abstractUsing portable sap flow sensors, the onset and volume of sap moving up the branches of grapefruit (Citrus Paradisi Macfadyen) trees was monitored on an hourly basis. Reference evapotranspiration (ETo) data was obtained from The Arizona Meteorological Network (AZMET). Crop evapotranspiration (ETc) was estimated from soil moisture measurements using a neutron probe. The threshold temperature limits were delineated from an evaluation of the hourly sap flow responses to cold winter and extreme summer temperatures. The heat based crop curve was derived from a correlation of the crop coefficients with heat unit over one crop year. The heat based crop coefficients were found to be similar to crop coefficients derived by other researchers.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectCitrus fruits -- Arizonaen_US
dc.subjectGrapefruits -- Arizonaen_US
dc.identifier.urihttp://hdl.handle.net/10150/220557-
dc.relation.ispartofseriesSeries P-105en_US
dc.relation.ispartofseries370105en_US
dc.description.sponsorshipCitrus Research Councilen_US
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