Studies on the relationships between climatic elements and the yield of mango in Yuching area.
Tsai JinChuan, Yao MingHwi, Chi KungShy, Liang LienShing
Author Affiliation: Department of Agricultural Engineering, Taiwan Agricultural Research Institure, Wufeng, Taichung, Taiwan.
Journal of Agricultural Research of China 45 : 186-194
Abstract : When grown under unfavourable climatic conditions in Yuching, Taiwan, mango trees suffer from embryo abortion. Studies were carried out on 8-year-old cv. Irwin mango trees during 1993-94, to investigate the effects of climatic conditions during flowering on the incidence of seedless fruits and yields. The percentage seed abortion was determined 60 days after flowering and the total sugar content of the mango fruit pulp was determined by a refractometer at harvest. Climatic data were recorded from 10 days before to 30 days after anthesis. Early flowering in January/early February resulted in a high proportion of fruits showing seed abortion and consequently reduction of yields. Cumulative temperature was negatively correlated with the percentage seed abortion and total sugar content, whereas cumulative precipitation was positively correlated with both. Temperature and precipitation during the 30 days after anthesis were more important than those during the 10 days before flowering.