. Beginnings in agriculture. Agriculture. INSECT ENEMIES OF PLANTS 209 branches, sapping out the juices. The San Jose scale also fastens itself on the fruit. Into the trunk the round-headed borer eats his way and adds to the destruction. Fortunately for the apple grower, not all of these enemies are likely to fall upon his trees in the same year, at least not in dangerous num- bers. But some of them will always be present to weaken his trees and reduce his crop unless he is able to prevent them. The fruit-grower is troubled most by t'he ins[ects just named for the apple, also with the aphis, c
. Beginnings in agriculture. Agriculture. INSECT ENEMIES OF PLANTS 209 branches, sapping out the juices. The San Jose scale also fastens itself on the fruit. Into the trunk the round-headed borer eats his way and adds to the destruction. Fortunately for the apple grower, not all of these enemies are likely to fall upon his trees in the same year, at least not in dangerous num- bers. But some of them will always be present to weaken his trees and reduce his crop unless he is able to prevent them. The fruit-grower is troubled most by t'he ins[ects just named for the apple, also with the aphis, curculio, leaf- hopper, flea-beetle, and pear psylla. The more common insect enemies which the grain farmer has to fight are the cutworm, root-worm, chinch-bug, grasshopper, hes- sian fly, and army-worm. The vegetable-grower has to contend with the potato beetle, cabbage-worm, cabbage aphis, striped cucumber beetle, plant- lice, flea-beetle, and white Fig. 104. — A tree almost stripped of its leaves by cater- pillars, which are biting or chewing Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Mann, Albert Russell, 1880-. New York, Macmillan company
Size: 1351px × 1850px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpubl, booksubjectagriculture
