GANGADHARAPPA, M. S. L. P. M. “Management of Phytophthora Foot Rot and Nematode Diseases in Black Pepper (Piper Nigrum L.)”. Journal of Spices and Aromatic Crops, vol. 4, no. 1, June 1995, pp. 61-63, https://www.updatepublishing.com/journal/index.php/josac/article/view/4342.