Applying Roundup to the Base of Lemon Tree Canopies: Preliminary Effects on Leaves, Flowers, Fruitlets, and Yield

Persistent Link:
http://hdl.handle.net/10150/220570
Title:
Applying Roundup to the Base of Lemon Tree Canopies: Preliminary Effects on Leaves, Flowers, Fruitlets, and Yield
Author:
McCloskey, William B.; Wright, Glenn C.
Affiliation:
Department of Plant Sciences; Yuma Mesa Agricultural Center
Issue Date:
Sep-1998
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Citrus and Deciduous Fruit and Nut Research Report
Abstract:
The effect of Roundup on lemon trees was evaluated by repeatedly spraying 0.5, 0.75, 1, 1.25, and 1.5 lb. a.i./acre on the bottom 20 to 24 inches of the tree canopies over a three year period. The Roundup applications caused significant leaf injury in the sprayed area of the canopies and there was also significant defoliation of branches at the higher Roundup rates in all three years of the study. In 1996, flower and fruitlet counts were not affected by the Roundup applications and the 1998 data were inconclusive. However, flower and fruitlet counts in 1997 in the sprayed zone of the canopy were significantly reduced by Roundup and the effect increased with increasing Roundup rate. The 1996 and 1997 yield data indicated that Roundup applied to the bottom 20 to 24 inches of the tree canopies did not significantly affect lemon yield. The preliminary data suggest that accidental drift or misapplication of Roundup on to lemon trees when spraying weeds on the orchard floor has no short-term effect on grove productivity.
Keywords:
Agriculture -- Arizona; Citrus fruits -- Arizona; Lemons -- Arizona; Lemons -- Weed control
Series/Report no.:
AZ1051; Series P-113
Sponsors:
Sponsored by the Arizona Citrus Research Council

Full metadata record

DC FieldValue Language
dc.titleApplying Roundup to the Base of Lemon Tree Canopies: Preliminary Effects on Leaves, Flowers, Fruitlets, and Yielden_US
dc.contributor.authorMcCloskey, William B.en_US
dc.contributor.authorWright, Glenn C.en_US
dc.contributor.departmentDepartment of Plant Sciencesen_US
dc.contributor.departmentYuma Mesa Agricultural Centeren_US
dc.date.issued1998-09-
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalCitrus and Deciduous Fruit and Nut Research Reporten_US
dc.description.abstractThe effect of Roundup on lemon trees was evaluated by repeatedly spraying 0.5, 0.75, 1, 1.25, and 1.5 lb. a.i./acre on the bottom 20 to 24 inches of the tree canopies over a three year period. The Roundup applications caused significant leaf injury in the sprayed area of the canopies and there was also significant defoliation of branches at the higher Roundup rates in all three years of the study. In 1996, flower and fruitlet counts were not affected by the Roundup applications and the 1998 data were inconclusive. However, flower and fruitlet counts in 1997 in the sprayed zone of the canopy were significantly reduced by Roundup and the effect increased with increasing Roundup rate. The 1996 and 1997 yield data indicated that Roundup applied to the bottom 20 to 24 inches of the tree canopies did not significantly affect lemon yield. The preliminary data suggest that accidental drift or misapplication of Roundup on to lemon trees when spraying weeds on the orchard floor has no short-term effect on grove productivity.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectCitrus fruits -- Arizonaen_US
dc.subjectLemons -- Arizonaen_US
dc.subjectLemons -- Weed controlen_US
dc.identifier.urihttp://hdl.handle.net/10150/220570-
dc.relation.ispartofseriesAZ1051en_US
dc.relation.ispartofseriesSeries P-113en_US
dc.description.sponsorshipSponsored by the Arizona Citrus Research Councilen_US
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