2004•Horticultural Science and TechnologyRequires access
Effect of Plant Growth Regulators on Fruit Set and Yield of Eggplant (Solanum melongena L.)
Jung-Soo Lee, Shin YoungAn, Yeongcheol Um, Sang‐Nam Lee
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Abstract
Plant growth regulators (PGRs) can be used to induce fruit setting and development of eggplant during unfavorable winter conditions, such as low light intensity and low temperature. To select an effective PGR, optimal concentration, and spray interval, three PGRs (cloxyfonac, 4-CPA, and CPPU) at three levels of concentration and two spray intervals (once every day and every five days) were tested on eggplant planted in a plastic house. Fruit set and development were similar in cloxyfonac and 4-CPA. However, cloxyfonac at 490 mg‧L^-^1 produced higher marketable yield than the other treatments. Spray interval did not affect marketable yield. Therefore, cloxyfonac applied at 490 mg‧L^-^1 every five days was recommended because it is labor-saving.