Effect of Glycyrrhiza (Glycyrrhiza glabra) and Henna (Lawsonia inermis) Plant Wastes on Controlling the Root-knot Nematode, Meloidogyne Incognita on Eggplant (Solanum melongena)

摘要

Day powdered root of glycyrrhiza and henna leaf powder were applied at the rates of 0.1, 1 and 10 g/pot for controlling Meloidogyne incognita on eggplant cv. Pusa Purple Long under greenhouse conditions. The higher rates (1 and 10 g) of glycyrrhiza did not decrease the number of galls and eggmasses, and plant growth parameters increased over those of the check. In contrast, increasing rates of henna powder reduced the numbers of galls and eggmasses in an increasing manner. Meanwhile, plant growth parameters insignificantly decreased in comparison with the check. Lower C/N ratio appeared to affect microbial activity resulting in lowering nematode population.