Ann YC. DETERMINATION OF THE EFFICIENCY AND EFFICACY OF BIO-CHEMICAL FERTILIZER ON THE SOIL, YIELD AND GROWTH PERFORMANCE OF BLACK PEPPER (Piper nigrum L.). JAA [Internet]. 2015 Jul. 22 [cited 2024 Jul. 22];4(3):460-8. Available from: https://rajpub.com/index.php/jaa/article/view/4278