Non-infested plots, with no proof of pathogenicity attributable to nematode

INHERITANCE OF RESISTANCE TO MELOIDOGYNE We had been unable to evaluate the independent javanica ROOT-GALLING Inside a BRAZILIAN SOYBEAN. Borem2, and P.A. Roberts1. In Brazil, root-knot nematode Meloidogyne javanica causes extreme yield loss of soybean [Glycine max (L.) Merril] in lots of agricultural regions. An effective approach to stop yield loss is planting root-knot nematode resistant cultivars. However, Brazilian cultivars have narrow genetic base for resistance to root-knot nematode, derived from the cultivar Bragg. Inheritance of resistance to Meloidogyne javanica (Mj) induced root-galling in cv.Non-infested plots, with no proof of pathogenicity attributable to nematode infection or host resistance response. The usage of propagated plant cuttings maintains direct linkage amongst initial screening benefits for resistance to M. incognita along with the deployment of such traits within time frames as brief as two years. SUPPRESSION OF MELOIDOGYNE INCOGNITA BY PAECILOMYCES LILACINUS IS ENHANCED BY PLANTING COVER CROPS. Timper, Patricia1 and G. Parajuli2. 1USDA ARS, P.O. Box 748, Tifton, GA 31793; and 2Wageningen University and Research Center, 6708 PB Wageningen, The Netherlands. Paecilomyces lilacinus is really a popular soil saprophyte and a few strains of this fungus are aggressive parasites of sedentary stages of nematodes. The fungus is registered in the U.S. beneath the trade names MeloCon WG and NemOut. Persistence of P. lilacinus is reasonably low in sandy soils when compared with other soil types. Addition of organic matter to sandy soil was shownMeeting Abstracts 495 to enhance persistence with the fungus. In standard agriculture, winter cover crops are utilised to reduce soil erosion and loss of plant nutrients. We hypothesized that, compared to fallow soil, expanding a cover crop before application of P. lilacinus would improve efficacy of your fungus against Meloidogyne incognita on cotton. A greenhouse experiment was performed in which cover crops have been grown for 1 month, killed with herbicides, and the above-ground residue reduce and left around the soil surface or removed. There had been 5 cover crop therapies: 1) fallow, 2) rye + residue, 3) rye, no residue, 4) crimson clover + residue, and 5) crimson clover, no residue. The NemOut remedies (0 and 336 g/ha) had been applied using a surfactant to a trench inside the center from the pots. A single cotton seed was planted in the center in the trench plus the trench cover with soil; the plants had been inoculated with J2 of M. incognita 2 wks later. The experiment was performed two times with seven replications per treatment. Nematode reproduction was assessed 60 days soon after inoculation. Percentage suppression of nematode reproduction by P. lilacinus was higher when the residue was placed around the soil surface than when it was removed. Nematode suppression in the presence of residue was 60 for rye and 49 for clover compared to 35 in fallow soil. In the absence of residue, nematode suppression was lower in the cover crop therapies than inside the fallow soil. In conclusion, suppression of M. incognita by P. lilacinus was enhanced when a cover crop was grown prior to cotton; having said that, this was accurate only when the above-ground residue was left around the soil surface. INHERITANCE OF RESISTANCE TO MELOIDOGYNE JAVANICA ROOT-GALLING In a BRAZILIAN SOYBEAN. Vinholes, Patricia da Silva1,2, V.M.P.