Orchard Barkbeetles and Pinhole Borers, and how to Control Them
Author: Fred E. Brooks
Publisher:
Published: 1918
Total Pages: 20
ISBN-13:
DOWNLOAD EBOOKRead and Download eBook Full
Author: Fred E. Brooks
Publisher:
Published: 1918
Total Pages: 20
ISBN-13:
DOWNLOAD EBOOKAuthor: Alonzo Dorus Melvin
Publisher:
Published: 1917
Total Pages: 930
ISBN-13:
DOWNLOAD EBOOKAuthor: Homer Columbus Thompson
Publisher:
Published: 1918
Total Pages: 574
ISBN-13:
DOWNLOAD EBOOKAuthor: United States. Department of Agriculture
Publisher:
Published: 1918
Total Pages: 570
ISBN-13:
DOWNLOAD EBOOK"Corn is made mostly of soil moisture and warm air. The acre yield of the United States has been below 31 bushels every year, while moisture and warm air sufficient to bring the yield to 100 bushels have gone to waste. By reducing the waste of moisture and heat corn yields can be doubled. Moisture runs off and carries with it the most fertile parts of the soil. Heat goes to waste in drying the soil and subsoil while timely cultivation would save both heat and moisture. Cultivation sometimes is beneficial, sometime injurious. Page 18. Recent discovery of the fact that seed corn that matures well and dries out promptly will keep its good germinating and yielding powers for four or five years makes unnecessary planting of poor seed corn or the loss of acclimated and improved strains. Page 23. This bulletin is especially applicable to dry-land regions; but corn yields are so dependent upon the relative quantities of soil moisture and heat that the principles given here apply wherever corn is raised." -- p. [2]
Author: Caroline Louisa Hunt
Publisher:
Published: 1917
Total Pages: 1394
ISBN-13:
DOWNLOAD EBOOKAuthor: Roy L. Patton
Publisher:
Published: 1980
Total Pages: 462
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1980
Total Pages: 590
ISBN-13:
DOWNLOAD EBOOKAuthor: Jae C. Choe
Publisher: Cambridge University Press
Published: 1997
Total Pages: 556
ISBN-13: 9780521589772
DOWNLOAD EBOOK'Social' insects and arachnids exhibit complex forms of behavior that involve cooperation in building a nest, defending against attackers or rearing offspring. This book is a comprehensive, up-to-date guide to sociality and its evolution in a wide range of taxa.
Author:
Publisher:
Published: 1950
Total Pages: 682
ISBN-13:
DOWNLOAD EBOOK