<< previous..Owing to the system of cultivation by rejuvenescence, and the constant replenishing of the soil by well-compounded manures, the Champenois winegrowers entertain great hopes that their vineyards will escape the ravages of the phylloxera vastatrix. According to Dr. Plonquet of Ay they are already the prey of no less than fifteen varieties of insects, which feed upon the leaves, stalks, roots, or fruit of the vines. Between 1850 and 1860 the vineyards of Ay were devastated by the pyrale, a species of caterpillar, which feeds on the young leaves and shoots until the vine is left completely bare. The insect eventually becomes transformed into a small white butterfly, and deposits its eggs either in the crevices of the stakes or in the stalks of the vine. All the efforts made to rid the vineyards of this scourge proved ineffectual until the wet and cold weather of 1860 put a stop to the insect’s ravages. More recently it has been discovered that its attacks can be checked by sulphurous acid.... next >>
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