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Determination of Leaf Necrosis Caused by Cercospora arachidicola Hori in Peanut as Measured by Loss in Total Chlorophyll¹

Author: H. A. Melouk

  • Determination of Leaf Necrosis Caused by Cercospora arachidicola Hori in Peanut as Measured by Loss in Total Chlorophyll¹

    ARTICLES

    Determination of Leaf Necrosis Caused by Cercospora arachidicola Hori in Peanut as Measured by Loss in Total Chlorophyll¹

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Abstract

Percent leaf necrosis can be used to assess severity of early leafspot caused by Cercospora arachidicola Hori on peanut (Arachis hypogaea L.). Measurements of leaf necrosis (%), as determined by area, and the corresponding loss (%) in total chlorophyll content were made. Correlations were calculated using linear regression, and logarithmic curve fit analyses. High positive correlation values were obtained between leaf necrosis and loss in total chlorophyll. Therefore, this method is suggested for a reasonably accurate and fast assessment of leaf necrosis of peanut caused by C. arachidicola.

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Keywords: Leafspot, disease assessment, insoluble polyvinylpyrrolidone, polyphenols

How to Cite:

Melouk, H., (1978) “Determination of Leaf Necrosis Caused by Cercospora arachidicola Hori in Peanut as Measured by Loss in Total Chlorophyll¹”, Peanut Science 5(1), p.17-18. doi: https://doi.org/10.3146/i0095-3679-5-1-4

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Published on
01 Jan 1978
Peer Reviewed
License
Creative Commons Attribution-NonCommercial 4.0

Author Notes

1Cooperative investigations of Agric. Res. Serv., USDA, and Oklahoma State University, Journal Article No. 3378, Oklahoma Agricultural Experiment Station, Oklahoma State University, Stillwater, OK 74074.

3Mention of a trademark or proprietary product does not constitute a guarantee or warranty of the product by the USDA or by Oklahoma State University, nor imply their approval to the exclusion of other products that may also by suitable.