Overbearing dieback on Arabica coffee
1986
Yunianto, Y.D. (Balai Penelitian Perkebunan Jember (Indonesia))
Overbearing die back on Arabica coffee (Coffea arabica L.) reduces yield due to the occurrence of many seedless and dried fruits. The plant is damaged after having die back and so the production will be fluctuating during consecutive years. Overbearing die back on coffee is caused by low carbohydrate reserves related to the heavy cropping and other conditions. Flowering is influenced by day length, temperature and carbohydrate content. Arabica coffee is a self-pollinated plant so heavy flowering is highly correlated with heavy cropping. There is an increasing carbohydrate absorption from both leaves and wood from flower initiation to rapid expansion of fruits. The increasing carbohydrate absorption is caused by rapid growth of the plenty fruits. During this period, roots damage and leaves abscise therefore carbohydrate production decreases. As a result the plant gets overbearing die back because the rest of the leaves cannot supply the needs of fruits.
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