Effects of soil properties on the growth of Garcinia cowa Roxb. in the Northwest of Vietnam

Abstract

Garcinia cowa Roxb. is the average tree species, with
many uses, and it distributes and develops well on the
acidic reaction soil. The soil properties have a direct
impact on the growth of this species. Research in the
area of Northwest showed soils where Garcinia cowa
Roxb. lives have the available Nitrogen content ranging
from poor to fair level (3.8-6.51 mg/100 g), the total
phosphorus ranging from fair to rich (0.12-0.21%), the
available kali and CEC at medium level, reaching 13.03-
14.0 mg/100 g and 12.17-17.91 meq/100 g, respectively.
Soil moisture ranged from 3.60 to 4.20%; proportion
ranged from 2.72 to 2.75; density ranged from 1.14 to
1.22; and porosity ranged from 56.60 to 63.00% in fairly
porous level. In the three provinces of the studied region,
Garcinia cowa Roxb. in Hoa Binh province grew the best
because Hoa Binh has the thicker layer of land, and the
available N, available K2O and total P2O5 contents that
were higher than in Son La and Dien Bien provinces.