. Elementary agriculture . EiG. 78. Courtesy of Agricultural Experiment Station, Wisconsin A field of potatoes yielding 350 bushels per acre. or fungus growth which attacks the plant above ground. The blight sometimes destroys a crop com- pletely. Spraying is the remedy for this enemy, also. Harvesting. Early varieties of the potato are dug as soon as they are big enough for market. Late potatoes are left in the ground until the vines are

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear