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Experiments on the time of application of insecticide to decrease the spread of yellowing viruses of sugar beet, 1954-66

✍ Scribed by R. HULL; G. D. HEATHCOTE

Book ID: 114836826
Publisher: Association of Applied Biologists
Year: 1967
Tongue: English
Weight: 532 KB
Volume: 60
Category: Article
ISSN: 0003-4746
DOI: 10.1111/j.1744-7348.1967.tb04501.x

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Absorbance was measured on a Unicam SP500 spectrophotometer. Chromatograms were repeated several times : the results are as follows : Extract Method 1 1 2 2 PC TLC PC TLC No. of chromatograms 5 5 4 4 Mean absorbance at 500mp 0.621 0.601 0.986 0,985 R.m.s. deviation 0.009 0.010 0.030 0.012 Coefficien