ඩිල්ශාන් ජයතිලක

 ~ Azolla, Anabaa and Organic Farming  Azolla - Azolla is a small group of freshwater floating ferns that belongs to the genus Salviniales, a popular indoor aquatic plant.  There are about seven species of Azolla ferns worldwide, including A. microphylla, A. imbricate and A. caroliniana.  Each of these fern species has the following common features.  That is;  Short, branched floating stalk and curved leaves divided into two segments, upper and lower.  The lower part is thin and is always slightly submerged, giving the plant buoyancy.  The upper part is green or purple and has a hollow inside.  These holes are the places that make for a very special symbiotic relationship.  Anabaena azollae Cyanobacteria live in these cavities.  Cyanobacteria are commonly referred to as blue-green algae due to their external morphological similarity.  However, Algae - algae is a separate genus of bacterial organisms that includes a wide variety...