Bordeaux mixture was discovered by P.A. Millardet of France during the year 1882 following his chance observation of farmers practice for protection against

Question:Bordeaux mixture was discovered by P.A. Millardet of France during the year 1882 following his chance observation of farmers practice for protection against

1.Plasmopara viticola on grapevine

2.Uncinula nectar on grapevine

3.Podosphaera leucotricha on apple

4.Venturia inequalis on apple


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