Effect of chemical paclobutrazol on fruit development, quality and fruit yield of Kaew mango (Mangifera indica L.) in Northeast Thailand.
Benjawan C., Chutichudat P., Boontiang K., Chanaboon T.
Author Affiliation: Department of Agricultural Technology, Faculty of Technology, Mahasarakham University, Mahasarakham Province 44000, Thailand.
Pakistan Journal of Biological Sciences 9 : 717-722
Abstract : An investigation was carried out from October 2004 to June 2005 at Chaiyaphum Province, Northeast Thailand to determine the effect of chemical paclobutrazol (PBZ) on flower and fruit development, quality and fruit yield of Kaew mango (Mangifera indica). Five rates of paclobutrazol were used, 0, 1000, 3000, 5000 and 7000 ppm/plant. The experiment consisted of two sets of treatments, i.e., T1-T5 represent the first set and T6-T10 represent the second set. The results showed that PBZ had no significant effect in extending number of days from flower initiation up to full bloom. PBZ also had no significant effect in delaying fruit maturity age but fruit sets were significantly increased with PBZ rates applied. PBZ had a highly significant effect on fruit length but significantly decreased fruit thickness. Fruit yields were significantly increased with PBZ application. The best application rate of PBZ was found with T7 (1000 ppm/plant) with an extended flower raceme length of 5 cm. This treatment gave the highest mango edible fruit yield of 48?281.25 kg ha-1.