Effects of sodium hypochlorite (NaOCl) on off-season flowering, fruitsetting and fruit quality of E-Daw longan (Dimocarpus longan Lour.)
2000
Winai Wiriya-alongkorn | Pawin Manochai | Warin Suthon | Nopadol Jarassamrit | Sakesan Ussahatanonta | Theeranuch Jareonkit (Maejo Univ., Chiang Mai (Thailand). Faculty of Agricultural Production. Dept. of Horticulture)
Study on soil application of sodium hypochlorite (NaOCl) at the rate of 0, 0.5, 2.5, 5 and 10 gram (a.i.) per square meter of ground cover area to 4-year-old longan trees cv. E-Daw was conducted in November 1999 at the Agricultural Park and Farm, Maejo University, Chiangmai, Thailand. All the trees receiving NaOCl at the rate of 0.5-10 g/square m found to give flowers ranging from 96.25 to 100 percent within 25-32 days, whereas those in the control failed to show this observation. Trees receiving the highest rate of NaOCl (10 g.) delayed flowering by 6-7 days compared to those received at the lower rates. Rates of NaOCl application had no significant effects on either fruit quality or quality characters which were the number of fruit per panicle, fruitlet weight, total soluble solid, fruit peel weight and thickness, fresh weight and thickness and also seed weight and size.
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