Field plots were treated with 4.5 MT/ha of dolomitic lime, an equivalent amount of gypsum (960 kg of Ca per hectare), or no Ca. At harvest, soil pHs in 1989 and 1990 were 4.4 and 4.4, 4.4 and 4.5, and 5.1 and 5.5 for nontreated, gypsum, and lime, respectively. In rows inoculated with Strepromyces scabies, incidences of tubers with scab lesions in 1989 and 1990 were 20 and 22, 18 and 22, and 53 and 80%, respectively, for the same treatments (...)
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D. H. Lambert (1991) studied this question.