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

Author

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

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.

Suggested Citation

  • Stewart, W. S. & Hield, H. Z. & Brannaman, B. L., 1952. "Effects of 2,4-D and related substances on fruit-drop, yield, size, and quality of Valencia oranges," Hilgardia, California Agricultural Experiment Station, vol. 21(11).
    • Handle: RePEc:ags:hilgar:381209
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