Guar is a leguminous crop and its roots bear nodules with special kind of bacteria that converts atmospheric free nitrogen to fertilizer available form. This symbiotic relation between bacteria and root nodules helps to reduce the cost of nitrogen fertilizer for crop. Therefore, to maintain the population of bacteria in the soil with respect to growth of plant seeds of Guar are to be inoculated with these bacteria before sowing.
This is done by preparing a 10 percent sugar or gur (jaggery) solution in boiling water. This jaggery/sugar solution is allowed to cool. After cooling, 3-4 packets of Guar bacterial culture (Bradyrhizobium sp.) are mixed to make a thin paste. This paste is coated over to the seed. Seed is dried under shade for 30-40 minutes before sowing.