Effect of biotherapic of Alternaria solani on the early blight of tomato-plant and the in vitro development of the fungus

Background: homeopathy is a means permitted in organic agriculture to control disease and plagues; biotherapics are practical for farmers intervene on the health of plants agro-ecological systems production. Tomato-plants can be affected by several diseases, one most significant ones Brazil early blight, caused fungus Alternaria solani, due damage it causes its wide distribution country. Aims: establish whether biotherapic A. solani may interfere vitro development affects severity blight tomato-plants greenhouse. Methods: effect was evaluated through percentage germinated spores under microscope growth colonies culture medium. Treatments used were: 26cH, 27cH, 28cH, 29cH 30cH; sterilized distilled water; diluted agitated hydroalcoholic solution. The 4 experiments Plants were kept vases subjected artificial inoculation after application treatments. Evaluation carried out diagrammatic scale. Results: no treatment germination or In first test, 26cH differed from water Tukey’s test at 5% but did not second treatments 27cH 28cH showed difference both solution with an average 57% 62% respectively. other 2 tests nor exhibit any effect. Conclusions: there direct fungus, disease. Factors affecting efficiency must better understood before recommended management tomato-plants.