The Relation of Leaf Structure to Thrips Resistance in the Onion ...
Author: Clinton Erastus Peterson
Publisher:
Published: 1941
Total Pages: 104
ISBN-13:
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Author: Clinton Erastus Peterson
Publisher:
Published: 1941
Total Pages: 104
ISBN-13:
DOWNLOAD EBOOKAuthor: Nicholas Dirk Molenaar
Publisher:
Published: 1984
Total Pages: 286
ISBN-13:
DOWNLOAD EBOOKAuthor: United States. Office of Experiment Stations
Publisher:
Published: 1929
Total Pages: 1072
ISBN-13:
DOWNLOAD EBOOKAuthor: U.S. Office of Experiment Stations
Publisher:
Published: 1944
Total Pages: 1158
ISBN-13:
DOWNLOAD EBOOKAuthor: American Society for Horticultural Science
Publisher:
Published: 1942
Total Pages: 828
ISBN-13:
DOWNLOAD EBOOKAuthor: Bruce L. Parker
Publisher: Springer Science & Business Media
Published: 2013-11-11
Total Pages: 606
ISBN-13: 1489914099
DOWNLOAD EBOOKThrips (fhysanoptera) are very small insects, widespread throughout the world with a preponderance of tropical species, many temperate ones, and even a few living in arctic regions. Of the approximately 5,000 species so far identified, only a few hundred are crop pests, causing serious damage or transmitting diseases to growing crops and harvestable produce in most countries. Their fringed wings confer a natural ability to disperse widely, blown by the wind. Their minute size and cryptic behavior make them difficult to detect either in the field or in fresh vegetation transported during international trade of vegetables, fruit and ornamental flowers. Many species have now spread from their original natural habitats and hosts to favorable new environments where they often reproduce rapidly to develop intense damaging infestations that are costly to control. Over the past decade there have been several spectacular examples of this. The western flower thrips has expanded its range from the North American continent to Europe, Australia and South Africa. Thrips palmi has spread from its presumed origin, the island of Sumatra, to the coast of Florida, and threatens to extend its distribution throughout North and South America. Pear thrips, a known orchard pest of Europe and the western United States and Canada has recently become a major defoliator of hardwood trees in Vermont and the neighboring states. Local outbreaks of other species are also becoming problems in field and glasshouse crops as the effectiveness of insecticides against them decline.
Author: J. Wilcox
Publisher:
Published: 1958
Total Pages: 4
ISBN-13:
DOWNLOAD EBOOKAuthor: James Roland Brazzel
Publisher:
Published: 1956
Total Pages: 28
ISBN-13:
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