Control of root-knot nematode, Meloidogyne incognita by urea coated with Nimin or other natural oils on mung, Vigna radiata (L.)

The present study was undertaken to evaluate the effect of soil amendment with urea coated with nimin (neembased product with neem-triterpenes) and oils of neem, castor, and rocketsalad on the root-knot nematode, Meloidogyne incognita, and plant growth of mung in pots. Soil amendment with urea coated with different doses viz., 0.02g, 0.04g and 0.06g/pot of nimin and oils of neem, castor rocket-salad significantly reduced the development of the root-knot nematode and thereby improved plant growth and increased chlorophyll content of mung leaves at 1% and 5% level of signicicance. The highest improvement was observed in plants treated with urea coated with nimin than neem oil, castor oil and rocket-salad. A significant reduction in root-nodulation was also observed as a result of soil amendment with urea coated with different doses of nimin and plant oils at 1% and 5% level of significance. Soil amendments with urea coated with the larger doses of the treatments were more effective than soil amended with smaller doses.