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Author : Charles Vancouver Piper,William Joseph Morse
Publisher : Unknown
Page : 22 pages
File Size : 40,6 Mb
Release : 1938
Category : Velvet-bean
ISBN : IND:30000090107461
Author : Anonim
Publisher : Unknown
Page : 4 pages
File Size : 46,7 Mb
Release : 1953
Category : Velvet-bean caterpillar
ISBN : UIUC:30112101919998
Author : Anonim
Publisher : Unknown
Page : 1924 pages
File Size : 51,5 Mb
Release : 1958
Category : Grain
ISBN : STANFORD:36105027074199
Author : United States. Department of Agriculture
Publisher : Unknown
Page : 56 pages
File Size : 55,7 Mb
Release : 1954
Category : Agriculture
ISBN : OSU:32435055054787
Author : Anonim
Publisher : Unknown
Page : 960 pages
File Size : 40,6 Mb
Release : 1952
Category : Agriculture
ISBN : MINN:31951D007110483
Author : M. Kogan,D.C. Herzog
Publisher : Springer Science & Business Media
Page : 597 pages
File Size : 49,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781461299981
Insects as a group occupy a middle ground in the biosphere between bacteria and viruses at one extreme, amphibians and mammals at the other. The size and gen eral nature of insects present special problems to the student of entomology. For example, many commercially available instruments are geared to measure in grams, while the forces commonly encountered in studying insects are in the mil ligram range. Therefore, techniques developed in the study of insects or in those fields concerned with the control of insect pests are often unique. Methods for measuring things are common to all sciences. Advances sometimes depend more on how something was done than on what was measured; indeed a given field often progresses from one technique to another as new methods are discovered, developed, and modified. Just as often, some of these techniques fmd their way into the classroom when the problems involved have been suffici ently ironed out to permit students to master the manipulations in a few labo ratory periods. Many specialized techniques are confined to one specific research laboratory. Although methods may be considered commonplace where they are used, in another context even the simplest procedures may save considerable time. It is the purpose of this series (1) to report new developments in methodology, (2) to reveal sources of groups who have dealt with and solved particular entomological problems, and (3) to describe experiments which might be applicable for use in biology laboratory courses.
Author : David William May
Publisher : Unknown
Page : 292 pages
File Size : 54,8 Mb
Release : 1927
Category : Agriculture
ISBN : OSU:32435023261787
Author : Federal Experiment Station in Puerto Rico
Publisher : Unknown
Page : 724 pages
File Size : 40,9 Mb
Release : 1912
Category : Agricultural experiment stations
ISBN : UCAL:B4264405
Author : Porto Rico Agricultural Experiment Station
Publisher : Unknown
Page : 450 pages
File Size : 42,5 Mb
Release : 1929
Category : Agricultural experiment stations
ISBN : UCAL:$B73819
Author : S.S. Narwal
Publisher : Scientific Publishers
Page : 303 pages
File Size : 53,7 Mb
Release : 2012-11-01
Category : Technology & Engineering
ISBN : 9789387741102
Allelopathy offers great potential: (a) to increase agriculture production (food grains, vegetables, fruits, forestry), (b) to decrease harmful effects of modern agricultural practices (multiple cropping, leaching losses from N – fertilizers, indiscriminate use of pesticides viz. weedicides, fungicides, insecticides and nematicides and development of pesticides tolerant /resistant biotypes in pests) on soil health/productivity and on environment and (c) to maintain soil productivity and pollution free environment for our future generations. It is hoped that in the near future the allelopathy may be used in crop production, crop protection, agroforestry and agro-horticultural systems of developed countries. Therefore, it may be one of the strategies to increase agricultural production in Sustainable Agriculture of 21st century. This book is based on the research findings and addresses to various intricate problems of crop production, to which there was no definite answer in the past but now have been attributed to allelopathy.
Author : Horace G. Cutler,Stephen J. Cutler
Publisher : CRC Press
Page : 320 pages
File Size : 40,7 Mb
Release : 1999-06-23
Category : Medical
ISBN : 9781420048629
Natural products that have both plant growth regulatory properties and pharmaceutical properties are examined in this book. This is the first and most up-to-date text linking agrochemistry and pharmaceutical chemistry in an easy to read presentation for practitioners in both fields. Due to the intense and widespread attention being given to
Author : United States. Agricultural Adjustment Administration
Publisher : Unknown
Page : 302 pages
File Size : 48,9 Mb
Release : 1936
Category : Agriculture
ISBN : UIUC:30112064879882
Author : Anonim
Publisher : Unknown
Page : 4 pages
File Size : 46,9 Mb
Release : 1959
Category : Agriculture
ISBN : MINN:30000010106429
Author : Dharam P. Abrol,Uma Shankar
Publisher : CABI
Page : 512 pages
File Size : 43,6 Mb
Release : 2012
Category : Agricultural pests
ISBN : 1780640021
Providing a critical evaluation of the management strategies involved in ecologically-based pest management, this book presents a balanced overview of environmentally safe and ecologically sound approaches. Topics covered include biological control with fungi and viruses, conservation of natural predators, use of botanicals and how effective pest management can help promote food security. In the broader context of agriculture, sustainability and environmental protection, the book provides a multidisciplinary and multinational perspective on integrated pest management useful to researchers in e.
Author : Larry P. Pedigo,G. David Buntin
Publisher : CRC Press
Page : 732 pages
File Size : 51,5 Mb
Release : 1993-12-17
Category : Science
ISBN : 084932923X
Handbook of Sampling Methods for Arthropods in Agriculture offers a comprehensive look at the principles and practicality of developing accurate sampling programs for arthropod pests and their arthropod enemies. The book examines developments in sampling populations and reviews sampling plans that produce accurate and affordable population estimates. The text stresses practicality, as well as the theoretical background of sampling. This book will be an indispensable reference for researchers, students, and practitioners in entomology and agriculture.