SDA-ARS Nematology Laboratory, Beltsville, MD 20705; 2University of Maryland, Salisbury, MD and

When disease stress was moderate, mixed species hay (Therapy 1) and hairy vetch plus forage D human melanocytesTo determine the radish (Remedy four) resulted in enhanced illness suppression in comparison to hairy vetch (Therapy two) or hairy vetch plus rye (Remedy three). As a result, correct measurement of microfauna-C is essential to understanding how groups like nematodes and mites contribute for the soil C cycle. Stable isotope evaluation is actually a popular method for measuring elemental dynamics of ecological processes, and could be a valuable tool for quantifying the flow of C by means of nematodes and mites. Though quite a few research happen to be committed to understanding steady isotope dynamics of 13C within the soil and atmosphere, the approaches for quantifying 13C content of and flow via soil animals has not previously been tested or standardize.SDA-ARS Nematology Laboratory, Beltsville, MD 20705; 2University of Maryland, Salisbury, MD and University of Delaware, Georgetown, DE; and 3Ohio State University, Wooster, OH. Rising organic vegetable production and sales have generated an elevated will need for pest management methods compatible with organic cultural practices. Winter cover crops, that are generally applied in organic farming, were incorporated as green manures in the spring and effects on nematodes, soilborne pathogens and tomato fruit yields were evaluated. Research carried out in 2010 and 2011 were designed to evaluate mixed species green manures and single species manures for improving soil and plant well being. The treatment options had been 1) mixed species hay (Festuca arundinacea, tall fescue; Dactylis glomerata, orchard grass; Phleum pratense, timothy; Trifolium pretense, red clover; and Medicago sativa, alfalfa); two) Vicia villosa (hairy vetch); 3) V. villosa and Secale cereale (rye); 4) V. villosa and Raphanus sativus (forage radish); and five) a bare ground manage. There have been six plots per treatment every single year, and every was sampled 4 times for plant-parasitic nematodes: 1) prior to green manure incorporation, two) ca. two weeks later, three) midseason and 4) at harvest. Southern blight and early blight were evaluated during the growing season. Total populations of plant-parasitic nematodes had been low (overall suggests 25.5 and 11.1/100 cc soil per plot in 2010 and 2011, respectively). General, Tylenchorhynchus spp. were by far the most frequently counted from the plots every year. They occurred in ca. 30-47 and 6-17 of the 30 plots in 2010 and 2011, respectively, varying with480 Journal of Nematology, Volume 44, No. four, December 2012 sampling date. Nematode pressure was thus low. No substantial differences (P 0.05) in numbers of PPN were identified among sampling dates or treatments. Early blight was greater (P = 0.0012) in tomatoes grown in plots having a hairy vetch green manure than in all other remedies, whilst southern blight was greatest (P = 0.0100) in hairy vetch plus rye plots. In 2011, disease severity was low and there have been no differences amongst green manure treatments. When disease stress was moderate, mixed species hay (Treatment 1) and hairy vetch plus forage radish (Remedy 4) resulted in enhanced disease suppression in comparison to hairy vetch (Treatment two) or hairy vetch plus rye (Therapy three). ESTABLISHING STANDARDIZED Techniques FOR Evaluation OF CARBON IN SOIL NEMATODES AND MITES. Milano de Tomasel, Cecilia, K.L. Ivanovich, D.J. Cox, E.A.