Results of correlative analysis between some growth criteria of fruit bearing branches and fruit yield of Da xanh pummelo (C. grandis)

Abstract

The study was carried out to determine the relationship between some growth criteria of fruit bearing branches and the fruit yield of Da xanh pummelo (C. grandis) cultivated in Tuc Tranh commune, Phu Luong district, Thai Nguyen province during 2017-2018. The correlative analysis between the growth criteria of fruit bearing branches (diameter, length, and total leaves) and the fruit yield exhibited the correlation coefficient (r) as 0.31, 0.21, and 0.04, respectively, which reveals that there was a low correlation between the growth criteria of fruit bearing branches and theirself fruit yield. This also showed that the fruit bearing branches almost played roles as bearing fruits and carrying nutrients for fruit growth, while the fruit yield would be determined by the vitality of the whole tree. Therefore, it is necessary to apply the technique solution to improving the tree’s vitality in order to improve the fruit yield of Da xanh pummelo in Thai Nguyen province.