TECHNOLOGY DEVELOPED THROUGH DEMONSTRATION ON THEMANAGEMENT OF ROOT KNOT NEMATODE, MELOIDOGYNEINCOGNITA IN POLYHOUSE CULTIVATED CUCUMBER BY SOILSOLARIZATIONK.V.V.S. Kranti, T. R. Kavitha and N.G. RavichandraAbstract Two field demonstrations were conducted to convince cucumber growers on the effect of soil solarizationin the management of root -knot nematode (Meloidogyne incognita) infesting cucumber grown under protectedcultivation. Soil solarization along with a bioagent effectively can suppress nematode populations in soil.Initial nematode population of 364 nematodes/200 cc soil was recorded in soil solarization combined withTrichoderma harzianum treated plot. Reduced final nematode population of 85 nematodes/200 cc soil andreduced root galling (2.21) was recorded in soil solarized combined with T. harzianum treated plot. Rootknot index (RKI) of this treatment was lower than those in farmerâs practice (Carbofuran 3 G) (2.46) anduntreated control (5.00). Untreated control plot recorded an initial and final nematode population of 325and 358 nematodes/200 cc soil respectively, with highest root knot index of 4.58 and reduced yield. Maximumyield was recorded from soil solarization combined with T. harzianum treated plots and the lowest yieldwas from the untreated control plots. |