Agriculture . hat would ha])pen to the young larva as the fruit grew in size ? One beetle will lay from fifty to 100 eggs. A sort of gum forms around the hole. The stem of the fruit soon weakens, and it drops to the ground with the larva in it. The larva then comes out and burrows into the ground. In about a month the full-grown beetle appears. Some fight the CUrCUlio by jarring the trees Fig. 61.—The plum-tree curculio. a, the larva; />, the pu;ia : c, the heetle; d,day after day, early or late, curculio, natural size, on young plum. catching the insects in a sheet, and then throwing them
Agriculture . hat would ha])pen to the young larva as the fruit grew in size ? One beetle will lay from fifty to 100 eggs. A sort of gum forms around the hole. The stem of the fruit soon weakens, and it drops to the ground with the larva in it. The larva then comes out and burrows into the ground. In about a month the full-grown beetle appears. Some fight the CUrCUlio by jarring the trees Fig. 61.—The plum-tree curculio. a, the larva; />, the pu;ia : c, the heetle; d,day after day, early or late, curculio, natural size, on young plum. catching the insects in a sheet, and then throwing them intowater covered with kerosene. Paris green is used in is applied several times after the blossoms have fallen. Other Insects.—New insects are constantly appearing,being brought in from other countries in fruit and nurserystock. ^Vhen first introduced, these insects increase veryrapidly, since their natural enemies are not always broughtwith them at the same time. Sometimes they come later
Size: 1645px × 1518px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookidag, booksubjectagriculture
