INTERNATIONAL JOURNAL OF AGRICULTURAL TECHNOLOGY

Volume 15, No. 02, Month MARCH, Year 2019, Pages 241 - 248

Effect of potassium chlorate combined with paclobutrazol, monopotassium phosphate and mepiquat chloride on fruit quality of longan (dimocarpus longan)

Chit-aree, L., Suwannawong, P., Somboonchai, P., Matta, F. B. and Prathumyot, W.

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The effect of potassium chlorate combined with paclobutrazol, monopotassium phosphate and mepiquat chloride on fruit quality of longan was investigated. Four treatments were potassium chlorate (control), potassium chlorate + paclobutrazol (PP), potassium chlorate + monopotassium phosphate (PM) and potassium chlorate + mepiquat chloride (PMC). The potassium chlorate was sprayed on 16 longan trees and the other chemicals were sprayed seven days after spraying with potassium chlorate. Results showed that there was no significant difference in fruit length, fruit diameter, fruit circumference, peel thickness, pulp thickness, total soluble solids, fresh weight of peel and pulp, and dry weight of peel, pulp and seed among treatments. Fruit set was increased by PP treatment as compared to the control. Fruit firmness resulting from PP, PM and PMC treatments were greater than fruit firmness resulting from the control. Results indicated that the sprayed chemicals did not reduce fruit quality of longan.

Keywords

longan, potassium chlorate, paclobutrazol, monopotassium phosphate, mepiquat chloride, fruit quality

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