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Book: Sulfur: A Missing Link between Soils, Crops, and Nutrition
Published by: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America

 

This chapter in SULFUR: A MISSING LINK BETWEEN SOILS, CROPS, AND NUTRITION

  1.  p. 171-182
    agronomy monographs 50.
    Sulfur: A Missing Link between Soils, Crops, and Nutrition

    Joseph Jez (ed.)

    ISBN: 978-0-89118-186-6

     
    Published: 2008


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doi:10.2134/agronmonogr50.c11

Sulfur and Marketable Yield of Potato

  1. Alexander D. Pavlista
  1. University of Nebraska, Panhandle Research and Extension Center, Scottsbluff

Abstract

Sulfur is considered a micronutrient of which relatively little is needed to overcome sulfur deficiency. However, in potato (Solanum tuberosum L.), large amounts of sulfur can be applied to increase marketable yield. In many potato-growing areas, marketable yield is reduced by tuber blemishes caused by Streptomyces scabies (Thaxt) Waks. & Henrici (common scab) and Rhizoctonia solani Kühn (black scurf). A reduction of common scab can be accomplished on slightly acidic and neutral soils by addition of large amounts of sulfur to lower the pH below the optimal range for S. scabies growth. However, a reduction of common scab and black scurf has been reported due to application of sulfur without affecting pH. A mechanism has been proposed for the latter observation by which sulfur and sulfate (SO42−) are converted to volatile sulfur forms, especially hydrogen sulfide (H2S), that act as biocides.

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Copyright © 2008. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, 5585 Guilford Road, Madison, WI 53711-5801, USA. Sulfur: A Missing Link between Soils, Crops, and Nutrition. Agronomy Monograph 50.

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