Vol. 74 No: 2

Title:
The synthetic auxin 3,5,6-TPA reduces fruit drop and increases yield in 'Kaimana' litchi

Authors:
RAPHAEL A. STERNT and SHMUEL GAZIT

pp: 203-205

Abstract:
The effects of the synthetic auxin 3,5,6-TPA on fruit retention and yield of 'Kaimana' litchi (Litchi chinensis Sonn.) was examined in Israel. This cultivar is characterized by a heavy initial set and then heavy fruit drop. 3,5,6-TPA decreased fruit drop and increased yield by 130 to 170% relative to untreated control trees. The best response occurred with an application of 25 or 50 mg l^-1 three weeks after full female bloom (FFB) (when fruit weighed ca. 0.5.g) compared with applications at 2, 4 or 5 weeks. Further commercial trials are warranted.

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