Abstract
Application of 2 g coal gased Rhizobium culture (biofertilizer) per plant has increased the relative height growth of one year old plantation of Dalbergia sissoo by 1.5 times as against control. Almost the same height growth was obtained by the application 50 g single super phosphate alone per plant. Though interaction of coal based rhizobium culture and single super phosphate was non-significant, the best combination was 2 g coal based rhizobium biofertilizer and 75 g single super phosphate per plant.
Application of 5 ml Rhizobium broth/plant to Albizia procera increased the relative height of one year old plantation by 1.2 times over control. A little more height was attended due to application of 75 g single super phosphate alone. Though interaction of Rhizobium broth and single super phosphate was non-significant the best combination was found to be 5 ml Rhizobium broth and 75 g single super phosphate per plant.
Looking towards the easy availability and low investment, biofertilizer (particularly coal based Rhizobium culture) may be preferred over inorganic phosphatic fertilizers in order to boost up overall biomass of leguminous forest trees.
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