IMPROVEMENT OF SOIL QUALITY, PREVENTION OF PLANT DISEASES AND YIELD INCREASE OF BLACK PEPPER AND COFFEE USING POLYFA-TN3

Abstract

In the current study, we used bio-organic product POLYFA-TN3 including beneficial indigenous microorganisms isolated in Tay Nguyen to improve soil quality, prevent plant diseases, and increase the yield of black pepper and coffee in Dak Lak province. Experimental results showed the efficiency of using POLYFA-TN3 on improvement of soil quality. Almost parameters of soil were increased after using POLYFA-TN3, of which soluble N, K, and P were significantly increased. Using POLYFA-TN3 also reduced plant diseases of black pepper and coffee such as yellow leaf, slow wilt decline, anthracnose, Phytophthora root rot, coffee rust. Using 2.0 kg POLYFA-TN3/tree post showed that plant diseases dropped to 0.5 - 7.53 % for black pepper, and 0 % for coffee. In addition, the yield of black pepper and coffee was significantly increased, with 35.2 % and 31.1 %, respectively. Our study indicated that the bio-organic product POLYFA-TN3 as a potential product for improvement of soil quality, crop yield, and prevention of plant diseases.