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The passion fruit scab is a disease caused by a soil fungus Fusarium oxysporum f. sp. passiflorae (FOP), its typical symptom is wilting. Bahia is the largest producer of the fruit, but the production is being compromised because of this pest problem. Nutrients can increase or decrease the resistance of plants to pathogens. Thus, the aim of this study was to identify and quantify the risk relationship between abiotic factors of soil and the incidence of fusarium passion fruit plantations in the state of Bahia. Altogether they were collected 50 soil samples at a depth of 0-20 cm. Chemical analysis determined the pH, macro and micronutrients, and texture classification using the sieve analysis. There is a predominance of alkaline soils. Regarding the texture class, the sandy loam was observed in 60% of samples. The incidence data on plants were positively correlated with pH, V and very fine sand, since the H + Al values, Fe and silt were negatively correlated. For incidence in pits, pH, V, Mn / Fe and fine sand were positively correlated, and H + Al, Fe and silt correlated negatively. In general, the elements that positively and negatively correlated with the incidence may indicate conduciveness and supressiveness the disease, respectively. High incidence of the disease was associated with very fine sand content acimas 104 g / kg soil. The variables, irrigation and textural classification showed no significant difference (p <0.05).

Identification and modeling of the risk of chemical and physical factors to the incidence of fusarium wilt of passionflower in Bahia