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Effects of Soil Solarization on Fusarium Wilt of Chickpea

Arora, D. K., Pandey, A. K.
Phytopathologische Zeitschrift 1989 v.124 no.1 pp. 13-22
Fusarium oxysporum, Fusarium wilt, chickpeas, chlamydospores, conidia, crops, discoloration, irrigation, nodulation, pathogens, soil solarization, soil temperature, summer, viability, wilting, xylem
The effect of soil solarization on chickpea wilt, caused by Fusarium oxysporum f. sp. ciceri, was examined during the summer of 1985 and 1986. Preplant solarization for 45 days in 1985 significantly (P = 0.5) decreased the incidence of wilt in two subsequent chickpea crops. Additional solarization of sub‐plots of the same soil during the summer of 1986 further reduced the disease and the pathogen. Yield and nodulation in the solarized plots were significantly (P = 0.05) higher than untreated plots. No pronounced differences in maximum temperature, percentage of diseased plants, plant height at maturity, and xylem discoloration indices were observed between solarized irrigated and non‐irrigated treatments. However, the above parameters differed significantly (P = 0.05) between solarized irrigated and nonsolarized non‐irrigated soil. Solarization significantly reduced both the population of F. oxysporum f. sp. ciceri, and viability of conidia and chlamydospores. These reductions were proportional to soil temperatures achieved during solarization.