. Agriculture for beginners. Fig. ioi. Club Root cherries. In many states its destruction is enforced bylaw. All black knot should be cut out and burned sometime before February of each year. This will cost littleand save much. THE DISEASES OF PLANTS 115 The Peach Curl. The peach curl does damage amountingto about $3,000,000 yearly in the United States, It canbe almost entirely prevented by spraying with Bordeaux. Fig. 102. Black KnotFrom Hodges Nature Study and Life, Ginn & Company mixture or lime-sulphur wash before the buds open in thespring. Strong Bordeaux mixture should not be used onpea
. Agriculture for beginners. Fig. ioi. Club Root cherries. In many states its destruction is enforced bylaw. All black knot should be cut out and burned sometime before February of each year. This will cost littleand save much. THE DISEASES OF PLANTS 115 The Peach Curl. The peach curl does damage amountingto about $3,000,000 yearly in the United States, It canbe almost entirely prevented by spraying with Bordeaux. Fig. 102. Black KnotFrom Hodges Nature Study and Life, Ginn & Company mixture or lime-sulphur wash before the buds open in thespring. Strong Bordeaux mixture should not be used onpeach trees when they are in leaf. The Cotton Wilt. Cotton wilt completely destroys the cropwhen it once establishes itself in the soil. The fungus ii6 AGRICULTURE FOR BEGINNERS remains in the soil and no amount of spraying will avail. The only known remedy is to cultivate a resistant variety of cotton or to rotate thecrop. The Fruit Mold. Fruitmold, or brown rot, oftenattacks the unripe fruiton the tree, and turnsit soft and brown and
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