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Author : George Gooding Ainslie,William Bell Cartwright
Publisher : Unknown
Page : 18 pages
File Size : 55,6 Mb
Release : 1922
Category : Agriculture
ISBN : UIUC:30112019237780
Author : George G. Ainslie
Publisher : Forgotten Books
Page : 26 pages
File Size : 40,6 Mb
Release : 2017-12-12
Category : Electronic
ISBN : 0331273497
Excerpt from Biology of the Lotus Borer (Pyrausta Penitalis Grote) At the time of the first visit, July 19, the main blooming season was closing. There were still a few flowers and scattering buds. None of the seed pods had ripened, but the oldest ones were fully grown. A count showed that there were 472 pods in all stages in the plantation. Of these, 80 (17 per cent) showed work of the larvae and were collected and examined individually. They contained 39 empty pupal shells, 23 pupae, and 2 larvae in the prepupal stage. Moths began to emerge at once, or, more properly, continued to emerge from the pupae until July 28, when the last one appeared. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author : United States. Department of Agriculture
Publisher : Unknown
Page : 392 pages
File Size : 50,8 Mb
Release : 1936
Category : Electronic
ISBN : MINN:30000007966660
Author : Anonim
Publisher : Unknown
Page : 216 pages
File Size : 52,6 Mb
Release : 2002
Category : Aquatic plants
ISBN : UFL:31262073730078
Author : United States. Department of Agriculture
Publisher : Unknown
Page : 942 pages
File Size : 48,5 Mb
Release : 1923
Category : Agriculture
ISBN : UOM:39015069877325
Author : F. W. Poos
Publisher : Unknown
Page : 62 pages
File Size : 46,5 Mb
Release : 1926
Category : Corn
ISBN : UOM:39015073146691
Author : United States. Department of Agriculture
Publisher : Unknown
Page : 220 pages
File Size : 45,6 Mb
Release : 1941
Category : Agriculture
ISBN : UFL:31262089180904
Author : J. S. Wade
Publisher : Unknown
Page : 98 pages
File Size : 49,6 Mb
Release : 1929
Category : Insects
ISBN : CHI:086499237
Author : Paul Henri Arnaud
Publisher : Unknown
Page : 868 pages
File Size : 45,5 Mb
Release : 1978
Category : Agriculture
ISBN : MINN:31951002839560C
The Tachinidae are the most important of the dipterous families with entomophagous habits. Though often little noticed, these flies have an important role in controlling phytophagous Insecta.
Author : Anonim
Publisher : Unknown
Page : 868 pages
File Size : 45,8 Mb
Release : 1978
Category : Agriculture
ISBN : MINN:20000003398373
Author : Klaus Kubitzki,Jens G. Rohwer,Volker Bittrich
Publisher : Springer Science & Business Media
Page : 663 pages
File Size : 44,7 Mb
Release : 2013-06-29
Category : Science
ISBN : 9783662028995
This volume - the first of this series dealing with angiosperms - comprises the treatments of 73 families, representing three major blocks of the dicotyledons: magnoliids, centrosperms, and hamamelids. These blocks are generally recognized as subclasses in modern textbooks and works of reference. We consider them a convenient means for structuring the hundreds of di cotyledon families, but are far from taking them at face value for biological, let alone mono phyletic entities. Angiosperm taxa above the rank of family are little consolidated, as is easily seen when comparing various modern classifications. Genera and families, in contrast, are comparatively stable units -and they are important in practical terms. The genus is the taxon most frequently recognized as a distinct entity even by the layman, and generic names provide the key to all in formation available about plants. The family is, as a rule, homogeneous enough to conve niently summarize biological information, yet comprehensive enough to avoid excessive re dundance. The emphasis in this series is, therefore, primarily on families and genera.
Author : Anonim
Publisher : Unknown
Page : 270 pages
File Size : 51,5 Mb
Release : 1930
Category : Entomology
ISBN : MINN:31951P002753272
Contribution from Bureau of Entomology.
Author : Anonim
Publisher : Unknown
Page : 728 pages
File Size : 54,8 Mb
Release : 1928
Category : Agriculture
ISBN : WISC:89048630792
Author : Anonim
Publisher : Unknown
Page : 820 pages
File Size : 54,5 Mb
Release : 1928
Category : Electronic
ISBN : STANFORD:36105005951194
Author : National Agricultural Library (U.S.)
Publisher : Unknown
Page : 836 pages
File Size : 42,6 Mb
Release : 1930
Category : Agriculture
ISBN : UOM:39015036829094