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Plant and Soil

, Volume 86, Issue 2, pp 265–271 | Cite as

Influence of interactions of barley cultivars with soil and fertilizer K, and soil pH on grain yield and quality

  • A. C. Dick
  • S. S. Malhi
  • P. A. O'Sullivan
  • D. R. Walker
Article

Summary

The interaction of exchangeable soil K with cultivars resulted in differences in grain production by five barley cultivars. The cultivars differed in the amount of exchangeable soil K required to produce maximum yield. Bonanza attained its maximum yield at 183 kg K2O ha−1, but Galt did not reach its maximum yield until a high level of exchangeable soil K was reached (252 kg K2O ha−1). The other cultivars were within this range. The cultivars also differed in their yield response to applied K fertilizer. Under conditions of growth-limiting K supply, Galt and Gateway were slightly more responsive to the addition of K fertilizer than were Centennial and Conquest, and much more responsive than Bonanza. The interactions of exchangeable soil K and soil pH or soil NO3−N and soil pH with cultivars indicated differences in acid tolerance of the cultivars. Galt was more pH sensitive than Bonanza.

Key words

Barley cultivar Exchangeable potassium Protein yield 

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Copyright information

© Martinus Nijhoff Publishers 1985

Authors and Affiliations

  • A. C. Dick
    • 1
  • S. S. Malhi
    • 1
  • P. A. O'Sullivan
    • 1
  • D. R. Walker
    • 1
  1. 1.Research StationAgriculture CanadaLacombeCanada

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