Show hydrated lime checks of cabbage at least three quarters of 0 a ton of hydrated lime per acre to Is necessary to check of cabbage in thoroughly infested soils and it takes at least two tons to produce a commercially satisfactory control the united states department of agriculture has hag found As a result of experiments now reported in technical bulletin T of Cru crucifers cifers published by the united states department of agriculture it was determined that alkalinity of soil alone was not the controlling factor unless the right alkali was present the disease persisted in one soil made alkaline with calcium carbonate but diminished in another less alkaline soil treated with cal calcium clurn hydroxide very hen heavy vy applications of ground limestone did not retard the disease and air slaked lime was found to be of questionable value cabbage seedlings are often diseased in the seed bed without showing disease above ground and may thus transfer the disease to the field later in the field the tops wilt and the plants may dle die or fall to produce heads heavy treatment of soils with hydrated lime may prevent from gaining a foothold the disease Is present in 30 36 states and in 21 of them Is important to truck growers |