Eye Spot Research Articles

Effect of Fertilizer Constituents on the Eye–Spot Disease of Sugar Cane1

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of Fertilizer Constituents on the Eye–Spot Disease of Sugar Cane1H. Atherton Lee and J. P. MartinCite this: Ind. Eng. Chem. 1928, 20, 2, 220–224Publication Date (Print):February 1, 1928Publication History Published online1 May 2002Published inissue 1 February 1928https://doi.org/10.1021/ie50218a043RIGHTS & PERMISSIONSArticle Views20Altmetric-Citations4LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (651 KB) Get e-Alerts

THE EYE-SPOT DISEASE OF SUGAR CANE

1. The "eye spot" disease which is caused by Helminthosporium sacchari Butler is serious on certain varieties of sugar cane in Porto Rico. 2. It is most severe on F.C. 306 and D. 109 with H. 109 as a poor third. The Uba and P.O.J. canes are most resistant. 3. The susceptibility varies with leaf structure, the higher the fiber content the greater the resistance. However, there appears to be some slight correlation with sucrose content. 4. The young leaves are more susceptible than the old leaves; the bases and upper surfaces more susceptible than the tips and lower surfaces. 5. The spores and sporophores germinate readily in water and penetrate the leaf without regard to the stomata. The greatest mycelial growth is in the parenchyma tissues. The spores are borne more abundantly on the lower than on the upper surface of the leaf. 6. The disease is most severe during the cool, wet months of the year. Temperature appears to be the most important environmental factor. 7. The most satisfactory control for Porto Rico at his time consists in the use of resistant varieties.

The Origin of the "Eye Spot"

The Origin of the "Eye Spot"