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.