Bartlett pears: The possibilities of 2,4-D sprays in controlling preharvest drop
California Agriculture 3(1):4-13.
Published January 01, 1949
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Experimental application of 2,4-D— 2,4-dichlorophenoxyacetic acid—to Bartlett pear trees for the control of drop at Davis was first made on July 3, 1947, to determine the effectiveness of the material in retarding drop, the necessary and critical concentrations and the influence upon ripening and storage quality.