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Naturally suppressive soils contained greater activity of chitinase than conducive soils. Preliminary pyro-sequencing analysis of bacterial communities suggests Verrucomicrobia have been more abundant and Actinobacteria had been sparse in suppressive soils. Values of SMI25 and trophic diversity indices have been correlated positively with SCN suppressive soils. Based on these results, there seems to be some association amongst Heterodera glycines and Helicotylenchus within the rhizosphere, possibly competing for space and/or nutrients. Mannase and arabinase look to be related to crop rotation, reflecting distinct proportions of carbohydrate monomers in the cell wall of corn than soybean. Our outcomes suggest that illness suppression seems to become far more closely aligned with fungi than bacteria. Natural suppression of SCN appears to be linked using the microbial neighborhood fostered by a mixture of no-till and soybean monoculture. PREPLANT SOIL Remedies TO Handle BLUEBERRY REPLANT Illness Caused BY MESOCRICONEMA ORNATUM. Noe, J.P., P.M. Brannen, W.T. Holladay, and G.B. Jagdale. Plant Pathology Dept., University of Georgia, Athens, GA 30602. Blueberry production in Georgia features a farm gate worth in excess of 100 million and accounts for nearly one-third with the total fruit and nut crop value for the state. A slow decline in plant vigor and an associated replant illness has been observed on numerous blueberry farms, which led to an investigation of attainable causes. Soil assays showed that Mesocriconema ornatum was related using the plant development symptoms. Right after confirmation of pathogenicity in greenhouse and microplot experiments, a field study was undertaken to ascertain the efficacy of preplant soil treatment options to handle M. ornatum on blueberry. Experimental plots have been established on two blueberry farms located in two Georgia counties, Appling and Bacon, that have been previously planted in blueberry and were naturally infested with M. ornatum. Treatments incorporated preplant fumigation with broadcast equivalent rates of methyl bromide/chloropicrin (50:50) at 448 kg/ha, 1,3-dichloropropene at 91 and 273 liter/ha, preplant solarization on the soil beneath clear plastic for 77 days, and nontreated controls; 6 replicates of every single treatment had been administered at every site. Data have been combined from both websites for analysis. Soil assays conducted promptly just after plastic film was removed showed that soil remedy with solarization lowered population densities of M. ornatum by 64 compared with nontreated plots (P0.05). Preplant soil treatment with methyl bromide/chloropicrin, or 1,3-dichloropropene at 91 or 273 liter/ha decreased population densities to three, six, and 0 M. ornatum/ 100 cm3 soil, respectively, compared with 203 M. ornatum/ one hundred cm3 soil within the nontreated plots (P0.05). In soil assays taken just after fumigant therapies have been applied and planting beds have been formed, population densities in the solarized plots remained reduced (140 M. ornatum/ 100 cm3 soil) than the nontreated plots but were larger than each of the soil fumigant remedies (P0.05). Immediately after planting,Meeting Abstracts 483 population densities of M. ornatum and also other plant-parasitic nematodes and blueberry growth and yield will be recorded periodically to ascertain population resurgence by the nematodes and resulting effects on blueberry. A NOVEL ASCAROSIDE SIS3 controls THE PARASITIC LIFE CYCLE Of the ENTOMOPATHOGENIC NEMATODE HETERORHABDITIS BACTERIOPHORA. Noguez, Jaime1, E.S. Conner2, Y. Zhou1, T.A.