. Amis et ennemis de la ferme agricole : un texte-livre de science agricole . Les ravageurs agricoles ; les insectes utiles ; les insectes nuisibles. Ferme 134 AMIS ET ENNEMIS DE LA FERME c'est une lutte difficile à combattre contre. La méthode la plus efficace est encore d'emploi comme l'un des laborieux choisir les coléoptères à la main et en les détruisant. Taupins chaque agriculteur's boy est familier avec le mince, jaune taupins si couramment trouvés quand l'herbe sont des terres labourées. Ces insectes se nourrissent sur les racines de l'herbe et les grains. Ils deviennent souvent très destructrices pour les cultures pratiquées sur terre qui a été dans le gazon pour plusieurs

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. Farm friends and farm foes : a text-book of agricultural science . Agricultural pests; Beneficial insects; Insect pests. 134 FARM FRIENDS AND FARM FOES This is a difficult pest to contend against. The most effective method as yet employed is the laborious one of picking the beetles by hand and destroying them. Click Beetles Every farmer's boy is familiar with the slender, yellow Wireworms so commonly found when grass lands are plowed. These insects feed upon the roots of grasses and grains. They often become seriously destructive to crops planted upon ground that has been in sod for several years. When fully de- veloped in their larval stage, these Wire- worms change to pupae within oval cells in the soil and a few weeks later change again into adult Click Beetles or Elaters. They usually remain, however, within the cells until the following sjmng, the tissues gradually hardening until they become very firm and hard even for a beetle. Then the adults come forth and Eyed Elater n r â < i_ ^ r. ⢠- ⢠ily treely about, often visitmg various flowers from which they lap up the nectar. These Elaters are often called. Snapping Beetles from the fact that when placed upon their backs, they snap upward, apparently in an effort to regain the crawUng position. It is supposed that the eggs are laid about the roots of grasses. The Wireworms are very difficult to destroy by any form of insecticides. The most desirable method of checking their increase seems to be that of fall plowing, which breaks up the pupal cells and exposes the beetles to destruction by weather conditions through the winter.. 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 work.. Weed, Clarence Moores, 1864-1947. Boston ; New York : D. C. Heath & Co.

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