Soybean (R), or SCN-susceptible soybean (S) monocrop, or RCRC and SCSC rotation cycles and augmented to around 400 eggs/100 cm3 of soil in 2002. Treatment options had been replicated four occasions and equal numbers of non-infested plots served as controls, for a total of 80 experimental plots. Soil texture across tillage and nematode treatments was 60 1 sand, 13 1 silt, and 26 1 clay. More than the SGC707 site course of six years (2003 2008), SCN population density, plant stand, and yield had been measured. Handful of cysts have been detected in non-infested plots. In 2003 and 2004, the population density remained much less than 1 cyst/100 cm3 of soil and reached the maximum to significantly less than 10 cysts/100 cm3 in 2005 and 2006. In all situations, the population density was highest in S and lowest in C or RC rotations. In 2007 and in 2008 stand count was significantly less in tilled than in no-till plots. Soybean yield was equivalent among nematode treatments until 2006. In 2007, in both tillage systems, and in 2008, in no-till plots, yield of SCN-infested plots was drastically reduce than non-infested plots. The study delivers agro-biologically based timeline facts that is essential for SCN management. A Approach TO EVALUATE THE EFFICACY OF CHEMICAL COMPOUNDS ON PLANT NEMATODES. Mendes, Maria de Lourdes, and D.W. Dickson. University of Florida, Entomology and Nematology Division, P.O. Box 110620 Gainesville, FL 32611-0620. A strategy applying PVC pipe was developed to evaluate the effectiveness of experimental compounds on root-knot nematode development under laboratory circumstances. This apparatus consists of two pieces of PCV pipe every two.five cm in diameter (diameter can differ). The leading piece, 5 cm lengthy, types the plant containment chamber. A Nitex cloth with 38 mm diameter openings is glued tightly towards the bottom of this chamber. This cloth prevents roots from growing into the second chamber, but does not stop nematodes from migrating in to the containment chamber. The bottom piece, 15 cm extended forms the nematode mobility and treatment chamber. Both pieces are filled tightly with pasteurized masonry sand. A single 1-week old root-knot nematode susceptible tomato seedling is transplanted into the root containment chamber and incubated within a precision incubator at 28 C. A fertilizer solution containing 0.21g/L of water of 20-20-20 NPK was applied just about every two days. AMeeting Abstracts 479 week later, immediately after the root method became established therapies are applied towards the remedy chamber. The chemical solutions prepared with water are drenched more than the best of your mobility and therapy chamber in 5 mL of the acceptable dilutions and set aside to permit the material to flow thorough the sand medium to reach the bottom of your tube. The control is treated with 5 mL of water. Twenty-four hours after the treatment application, the tubes are turned upside down and 300 second-stage juveniles of Meloidogyne spp. are added in two mL of water. The chambers are set aside for at the very least 4 hours to enable the nematode suspension to flow in to the sand. After that, the plant chamber is nested more than the mobility and treatment chamber and taped collectively.