International Journal of Agriculture Extension and Social Development

author(s)
Shivani Chaudhary, Kamal Khilari and Abhishek Kumar

abstract
Because of its severity, the rice root knot nematode (Meloidogyne graminicola) has been designated as a National Pest, making it a serious global hazard. The rice planter suffers large losses as a result of this, which is one of the main obstacles to effective rice production. In order to get a better understanding of the biology and life cycle of M. graminicola, the current study used the cultivar "PUSA Basmati 1121" in a laboratory setting at the Department of Plant Pathology, SVPUAT, Meerut. Within 36 hours of inoculation, the infectious second stage juvenile of M. graminicola entered the rice root, began feeding, and stayed motionless, according to the data. The life cycle, which included the preparasitic stage, lasted 25 to 30 days, and the females produced between 270 and 320 eggs in a single egg sac inside the root tissue. As the body continues to absorb nutrients, it gets bigger. For females, the duration of the second, third, and adult phases was 1-5 days, 5-9 days, 10-13 days, and 28 days, respectively.