Persistent Link:
http://hdl.handle.net/10150/198113
Title:
Development of Best Management Practices for Fertigation of Young Citrus Trees, 2003 Report
Author:
Thompson, Thomas L.; White, Scott A.; Walworth, James; Sower, Greg
Issue Date:
2003
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Citrus Research Report
Abstract:
‘Newhall’ navel oranges on ‘Carrizo’ rootstock were planted in Mar. 1997 at the Citrus Agricultural Center. The objectives of this experiment, conducted during 2000 - 2003, were to i) determine the effects of N rate and fertigation frequency for microsprinkler-irrigated navel oranges on tree N status, and crop yield and quality; and ii) develop Best Management Practices which promote optimum tree growth and production while minimizing nitrate leaching. The trees were equipped with a microsprinkler irrigation system. The experiment was a randomized complete block factorial with N rates of 0, 0.15, 0.30, and 0.45 lb N/tree/year, and fertigation frequencies of weekly, monthly, and three times per year. Each of the ten treatments was replicated five times. The trees were harvested in December or January of each growing season. Fruit were processed through an automatic fruit sizer, and fruit from each plot were further evaluated for fruit quality. Leaf N concentration and fruit yield of 4-6 year old trees were responsive to N rate, but not to fertigation frequency. Fruit quality and packout were not significantly affected by either N rate or fertigation frequency. Fruit yield was optimized at annual N rates of 0.25 lb/tree (four-year-old trees) to 0.35 lb/tree (six-year-old trees) during this experiment. We propose new tissue guidelines for guiding N fertilization of young microsprinkler-irrigated navel oranges.
Keywords:
Agriculture -- Arizona; Citrus fruits -- Arizona; Fertilization practices
Series/Report no.:
AZ1331; Series P-137
Sponsors:
Arizona Citrus Research Council

Full metadata record

DC FieldValue Language
dc.titleDevelopment of Best Management Practices for Fertigation of Young Citrus Trees, 2003 Reporten_US
dc.contributor.authorThompson, Thomas L.en_US
dc.contributor.authorWhite, Scott A.en_US
dc.contributor.authorWalworth, Jamesen_US
dc.contributor.authorSower, Gregen_US
dc.date.issued2003-
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalCitrus Research Reporten_US
dc.description.abstract‘Newhall’ navel oranges on ‘Carrizo’ rootstock were planted in Mar. 1997 at the Citrus Agricultural Center. The objectives of this experiment, conducted during 2000 - 2003, were to i) determine the effects of N rate and fertigation frequency for microsprinkler-irrigated navel oranges on tree N status, and crop yield and quality; and ii) develop Best Management Practices which promote optimum tree growth and production while minimizing nitrate leaching. The trees were equipped with a microsprinkler irrigation system. The experiment was a randomized complete block factorial with N rates of 0, 0.15, 0.30, and 0.45 lb N/tree/year, and fertigation frequencies of weekly, monthly, and three times per year. Each of the ten treatments was replicated five times. The trees were harvested in December or January of each growing season. Fruit were processed through an automatic fruit sizer, and fruit from each plot were further evaluated for fruit quality. Leaf N concentration and fruit yield of 4-6 year old trees were responsive to N rate, but not to fertigation frequency. Fruit quality and packout were not significantly affected by either N rate or fertigation frequency. Fruit yield was optimized at annual N rates of 0.25 lb/tree (four-year-old trees) to 0.35 lb/tree (six-year-old trees) during this experiment. We propose new tissue guidelines for guiding N fertilization of young microsprinkler-irrigated navel oranges.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectCitrus fruits -- Arizonaen_US
dc.subjectFertilization practicesen_US
dc.identifier.urihttp://hdl.handle.net/10150/198113-
dc.relation.ispartofseriesAZ1331en_US
dc.relation.ispartofseriesSeries P-137en_US
dc.description.sponsorshipArizona Citrus Research Councilen_US
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