K Kandiannan, M Anandaraj, D Prasath, K B Vinitha, V Srinivasan,. 2014. “Standardization of Soil-Less Nursery Mixture for Black Pepper (Piper Nigrum L.) Multiplication Using Plug-Trays”. Journal of Spices and Aromatic Crops 23 (1):01-09. https://updatepublishing.com/journal/index.php/josac/article/view/5075.