COMPOSITION FOR CONTROLLING CLUBROOT OF BRASSICA PLANTS USING RED CRAY SLURRY AND MANUFACTURING METHOD THEREOF

摘要

The present invention relates to a composition comprising red clay slurry for controlling clubroot of Brassica plants and a preparation method thereof. Specifically, the roots are pre-treated by being immersed in the composition comprising red clay slurry for controlling clubroot of Brassica plants before planted, and then foliage treatment is done to allow the control of clubroot, a lethal disease for Brassica plants, thereby enabling a user to perform organic farming or eco-friendly farming and preventing factors which threaten the safety of the people and deteriorate the quality of soil and water to contribute to the development of eco-friendly agriculture. The method for preparing a composition comprising red clay slurry for controlling clubroot of Brassica plants according to the present invention comprises the steps of: 1) placing and mixing 10-40 wt% of sodium hydroxide (NaOH) with 60-90 wt% of red clay in a container; 2) making a melting reaction of the mixture of Step 1 in a furnace having a graphite crucible at 1100-1200°C; 3) cooling and then pulverizing the melted product of Step 2 by a pulverizer; 4) adding water to the pulverized product of Step 3 to pulverize the mixture again to prepare red clay slurry; 5) adding sulfuric acid to the red clay slurry prepared in Step 4 for neutralization; and 6) diluting the red clay slurry neutralized in Step 5 to 0.1-2 parts by weight based on 100 parts by weight of water.