THE SPREAD OF BEET YELLOWS AND BEET MOSAIC VIRUSES IN THE SUGAR-BEET ROOT CROP .2. THE EFFECTS OF APHID NUMBERS ON DISEASE INCIDENCE

被引:44
作者
WATSON, MA
HEALY, MJR
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D O I
10.1111/j.1744-7348.1953.tb02365.x
中图分类号
S [农业科学];
学科分类号
09 ;
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页码:38 / 59
页数:22
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