Effects of 2,4-D and related substances on fruit-drop, yield, size, and quality of Valencia oranges

W. S. Stewart, H. Z. Hield and B. L. Brannaman

Hilgardia, 1952, vol. 21, issue 11

Abstract: During 1947 and 1948, in various districts throughout southern California, 29 comparisons were made between fruit-drop from non-sprayed Valencia orange trees and that from trees sprayed with 2,4-D at concentrations from 4 to 48 p.p.m. Application of 2,4-D at low volumes was made six months before drop, as well as after drop had begun. While the average reduction in fruit-drop from the sprayed trees was 35.1 per cent, in some cases it was as high as 64, and in others, as low as 5 per cent.

Keywords: Crop; Production/Industries (search for similar items in EconPapers)
Date: 1952
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