| New technique
in Biofertilizer
Generally biofertilizers are carrier based and always in powder form. The carrier is mostly lignite, which has high organic matter content, and it holds more than 200% water, which enhances the growth of the micro-organisms. Before use slurry is made which is applied to seed. This method is universal unless it has some difficulty in application to seed no other method is used. Recently university of agricultural sciences, Bangalore has developed a method- dry complex fertilizer for direct soil application. This method consists of granules (1-2 mm) made from tank bed clay (TBC). These granules are baked at 2000C in a muffle furnace, which helps to sterilize the material and gives porosity to granules. The baked granules are soaked in a suspension of nitrogen fixing bacteria grown in a suitable medium overnight. The clay granules are air dried at room temperature under aseptic conditions. The granules contain more than a billion of bacteria per gram of granules. These granules are suitable for field application along with seeds and fertilizers in furrows. However, quantity of biofertilizer to be applied will be slightly higher than seed application. |
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