An experimental study on the rejuvenating aged mango trees in Daqiaotou mango plantation, Jinggu.
Shi ZongMing, Li Yun, Zhao HuanPing, Shi Qiong, Li SiQiang, Ai ZhengXian
Author Affiliation: Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, Yunnan, China.
Acta Botanica Yunnanica 18 : 105-109
Abstract : An experiment was carried out to study rejuvenation of low input, aged mango trees at Daqiaotou Plantation (10 hm˛; 2064 trees), Jinggu County, Yunnan, China. Trees were given the following treatments: strong rejuvenation, light rejuvenation, rejuvenation of 1 out of every 2 rows of aged mango trees and light pruning. Also some cultural measures, such as preventing diseases and eliminating pests, changing sloping land into tableland, and increasing fertilizer application, were practised. After rejuvenation in 1991, 1110 out of the 2064 mango trees survived, and their output reached up to 44?360 kg in 1993, which was 10 times that in 1991 and 21.65 times the average output of 1989-91. The effects of the rejuvenation treatments were ranked in the order: light rejuvenation > rejuvenation of 1 of every 2 rows of trees > light pruning. Two years after grafting, the mango trees which were strongly rejuvenated started to set fruits.