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dc.contributor.authorMcCloskey, William B.*
dc.contributor.authorWright, Glenn C.*
dc.contributor.editorWright, Glennen_US
dc.contributor.editorKilby, Mikeen_US
dc.date.accessioned2012-04-25T18:30:43Z
dc.date.available2012-04-25T18:30:43Z
dc.date.issued1998-09
dc.identifier.urihttp://hdl.handle.net/10150/220570
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.
dc.description.sponsorshipSponsored by the Arizona Citrus Research Councilen_US
dc.language.isoen_USen_US
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.relation.ispartofseriesAZ1051en_US
dc.relation.ispartofseriesSeries P-113en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectCitrus fruits -- Arizonaen_US
dc.subjectLemons -- Arizonaen_US
dc.subjectLemons -- Weed controlen_US
dc.titleApplying Roundup to the Base of Lemon Tree Canopies: Preliminary Effects on Leaves, Flowers, Fruitlets, and Yielden_US
dc.typetexten_US
dc.typeArticleen_US
dc.contributor.departmentDepartment of Plant Sciencesen_US
dc.contributor.departmentYuma Mesa Agricultural Centeren_US
dc.identifier.journalCitrus and Deciduous Fruit and Nut Research Reporten_US
refterms.dateFOA2018-08-18T18:55:50Z
html.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.


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