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Biological Trace Element Research

, Volume 6, Issue 4, pp 281–288 | Cite as

Improvement of selenium status of pasture crops

  • Gunnar Gissel-Nielsen
Article

Abstract

Selenium was applied to pasture crops in a field experiment (1) by foliar application of 10 g Se/ha as selenite in the spring, (2) or by 5 g Se/ha in the spring plus 5 g in early August, (3) as selenite-enriched calcium ammonium nitrate (CAN) at 4 g Se/ha after each cut, and (4) as 4 g Se after every second cut. The experiment covered 2 yr. The results showed that applying 4 g Se in CAN/ha five times and spraying with 10 g Se/ha were efficient and safe measures to raise the average Se concentrations from about 0.04 ppm to 0.06-0.1 ppm. The yield of dry matter was lower in 1981 than in 1980 and consequently the Se concentrations were higher. Dividing the foliar application of 10 g Se/ha into two applications increased the efficiency considerably.

Index Entries

Selenium control in pasture crops foliar application of Se in pasture crops fertilizer crops control of Se in pasture crops control of Se in 

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Copyright information

© Humana Press Inc. 1984

Authors and Affiliations

  • Gunnar Gissel-Nielsen
    • 1
  1. 1.Agricultural Research DepartmentRiso National LaboratoryRoskildeDenmark

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