02350naa a2200313 a 450000100080000000500110000800800410001910000190006024501160007926000090019550000940020452013430029865000140164165000180165565000160167365000230168965000110171265000270172365000110175065300250176165300330178665300350181970000210185470000210187570000220189670000190191870000220193777300770195910832402011-05-17       2006    bl uuuu     u00u1 u    #d1 aCARDOSO, S. C.  aControl of tomato bacterial wilt through the incorporation of aerial part of pigeon pea and crotalaria to soil.  c2006  aPart of the Master thesis of the first author, at the Federal University of Bahia (UFBA).  aThe use of organic matter that improves the physical, chemical and biological soil properties has been studied as an inducer of suppressiveness to soilborne plant pathogens. The objective of this work was to evaluate the effect of different sources and concentrations of organic matter on tomato bacterial wilt control. Two commercially available organic composts and freshly cut aerial parts of pigeon pea (Cajanus cajan) and crotalaria (Crotalaria juncea) were incorporated, in concentrations of 10, 20 and 30 % (v/v), into soil infested with Ralstonia solanacearum. The soil with the fresh organic matter of pigeon pea and crotalaria was incubated for 30 and 60 days before planting. Tomato seedlings of cv. Santa Clara were transplanted into polyethylene bags with 3 kg of the planting substrate (infested soil + organic matter). The wilting symptoms and percentage of flowering plants were evaluated for 45 days. All evaluated concentrations with incorporation and incubation for 30 days of aerial parts of pigeon pea and crotalaria controlled 100% tomato bacterial wilt. With 60 days of incubation, only the 10 % concentration of pigeon pea and crotalaria did not control the disease. These results suggest that soil incorporation of fresh aerial parts of pigeon pea and crotalaria is an effective method for bacterial wilt control.  aBactéria  aCajanus Cajan  aCrotalária  aCrotalária Juncea  aGuandu  aRalstonia Solanacearum  aTomate  aCompostos orgânicos  aLycopersicon esculentum Mill  aMurcha bacteriana do tomateiro1 aSOARES, A. C. F.1 aBRITO, A. dos S.1 aLARANJEIRA, F. F.1 aLEDO, C. A. S.1 aSANTOS, A. P. dos  tSumma Phytopathologica, Botucatugv. 32, n. 1, p. 27-33, Jan./Mar. 2006.