. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). The Four-lined Leaf-Bug. 245 upon the choicest products of the garden throughout the early summer months, and hundreds less of the augmented later ; It is only necessary to again recall the fact that this pest passes the winter in the egg and not as an adult, to see how fruitless would be the watch for the gravid females in the spring. The two proposed methods of combating this pest just discussed are striking instances of the necessity for mo
. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). The Four-lined Leaf-Bug. 245 upon the choicest products of the garden throughout the early summer months, and hundreds less of the augmented later ; It is only necessary to again recall the fact that this pest passes the winter in the egg and not as an adult, to see how fruitless would be the watch for the gravid females in the spring. The two proposed methods of combating this pest just discussed are striking instances of the necessity for more knowledge of the life-his- tories of some of our insect pests if our farmers and fruit growers are to be taught to intelligently and successfully fight these little foes. 3. Pruning of the bushes to destroy the eggs.— Our discovery of the eggs of this pest in slits in the stems of the shrubs they infest, suggested a new method of c(<mbating the pest. All of the eggs are laid before August 1, within four or five inches from the tips of the new growth, and there remain unhatched until the following May. Figure 13 shows a currant tip, natural size, with several white egg clusters plainly visible. Fio. 13. — Tip of new shoot of currant, showing several white egg clusters in the stem near its center, natural size near the center of the stem. The eggs are doubtless too well protected to be affected by any insecticide which might be applied, but why not cut back the tips of the new shoots for six inches and burn them ? On bushes which have been infested this year, these egg scars can soon be found, as the whitish tips of the eggs are quite conspicuous. After a few have been found and their characteristics noted, it will take. 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 Cornell University. Agricultural
Size: 1260px × 1982px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1800, bookcollectionbiodiversity, bookdecade1880
