Food Habits of Birds; Miscellaneous Papers

Food Habits of Birds; Miscellaneous Papers

By (author) 

List price: US$10.11

Currently unavailable

Add to wishlist

AbeBooks may have this title (opens in new window).

Try AbeBooks


This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1918 edition. Excerpt: ...Iowa, a square rod of ground in a garden, which had been in potatoes the year before and cultivated with a hoe, yielded 187,884 plants of eight common weeds." Crab grass and its allies, which are great pests in permanent lawns, and the seeds of which are eaten freely by the horned larks, occur in even greater number. Professor Beal states that each square quarter of an inch in his garden in Maryland, when first cultivated in the spring, contained at least one plant of crab grass. Upon this basis the number of plants to a square rod is 627,264. Three times the weeds were cut off, but each time they appeared in as great numbers as before. The above statements indicate the vast numbers of weeds on farms, and show that to prevent them from possessing the land they must be destroyed in all stages of growth. The damage they cause, reckoned aBulletin No. 70, Exp. Sta., Ia. State College, p. 465, 1903. in dollars and cents, is enormous. The Botanist of the Department of Agriculture says: The direct loss in crops, the damage to machinery and stock, and the decrease in value of land due to weeds, amount without question to tens of millions of dollars each year--a loss sustained almost wholly by the farmers of the nation.11 To limit the loss caused by them an unending warfare must be waged-by the farmer. Any allies in this defensive warfare should be Wel comed, and of such allies the seed-eating birds are the most important. The farmer, by the expenditure of time and labor, can destroy the weeds when they have sprouted, or later before they have ripened seed. But the seeds which are on and in the ground and which remain there for an indefinite period awaiting favorable opportunity for germination, it is not practicable for man to destroy. more

Product details

  • Paperback | 174 pages
  • 189 x 246 x 9mm | 322g
  • United States
  • English
  • black & white illustrations
  • 1236871014
  • 9781236871015