Effects of water regimes on flowering, yield components and quality of arabica coffee
2005
Primluck Praphutphitthaya(Chiang Mai University, Chiang Mai (Thailand). Faculty of Agriculture. Department of Horticulture) | Chawalit Korsamphan(Chiang Mai University, Chiang Mai (Thailand). Faculty of Agriculture. Highland Research and Training Center) | Bantoone Warrit(Chiang Mai University, Chiang Mai (Thailand). Faculty of Agriculture. Highland Research and Training Center)
No effect of water stress on vegetative growth was found on all treatments. However, in term of physiology, the water regime of 100 percent FC resulted higher leaf water potential, high number of stomata and total chlorophyll content. Trees that experienced to soil moisture content at FSW flowered more time than that of 75, 100, 50 and 25 percent FC respectively. Water regimes also had effect on duration of fruiting. Watering at 50 percent FC, the time from first re-watering to fruit setting and ripening were longer than other treatments. Several set of fruit ripening occurred during the 11 weeks. At 25 percent FC and FSW treatments, harvesting finished within, 5.37 and 5.56 times which were higher that of the other treatments. Moreover, the highest number of cherries per branch and number of cherries per node were shown in the last treatment. Yield component showed no significant difference in term of number of node and number of bearing node per branch. However, the highest 100 cherry weight was achieved from the 100 percent FC treatment. The trees irrigated at the first sign of wilting showed the highest number of fresh fruit per tree, but irregular ripening was observed. Harvesting therefore regimed more labor, which attributed to high cost of production. In contrast, watering at 75 and 100 percent FC significantly reduced number of flowering cycles, whereas the number of fresh fruit per tree was also reduced. However, these treatments showed the highest fresh fruit weight per 100 fruits, green bean weight per 100 beans and percent A grade of green bean. Finally, 75 percent FC watering is recommended because it reduces water consumption and lower harvesting cost by reducing the number of harvesting cycle.
显示更多 [+] 显示较少 [-]