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This publication is the sixth of a series dealing with descriptions of types of the principal varieties of vegetables grown in the United States. It is published in response to seedsmen, produce merchants, vegetable canners, and growers for an adequate, accurate, and generally accepted description of varietal characteristics.
A systematic study of the North American species of the aphid genus Myzus Passerini is presented in this publication. It brings together the known species, listing their hosts and giving their distributions, the locations of their types, and descriptions, drawings, and keys for their separation.

Report

United States. Bureau of Plant Industry, Soils, and Agricultural Engineering

Published: 1923

Total Pages: 834


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