Effect of fertilisation renovation on the production capacity of permanent grassland

J. Jančovič, Ľ. Vozár, Ľ. Jančovičová and S. Petríková
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J. Jančovič: Slovak Agricultural University in Nitra, Slovakia
Ľ. Vozár: Slovak Agricultural University in Nitra, Slovakia
Ľ. Jančovičová: Slovak Agricultural University in Nitra, Slovakia
S. Petríková: Slovak Agricultural University in Nitra, Slovakia

Plant, Soil and Environment, 2004, vol. 50, issue 3, 129-133

Abstract: From the experimental study of fertilization renovation (after its three-year absence) on production capacity of seminatural grassland in the area of Strážov Hills (Middle Slovakia, height above see level 640 m, association Lolio-Cynosuretum Tx. 1937, time of experiment 1997-1999) it follows that yearly application of doses 60-120 kg N(+PK)/ha leads to a rapid renovation of production feat at high yield stability and production effects by infused nutriens (increase of yield 15.3 or 13.6 kg dry matter/kg NPK, 23.1 or 19.1 kg dry matter/kg N). Within the dose interval 120-240 kg N(+PK)/ha, the values of average production 1 kg N (8.64 kg dry matter) fall to almost one half in comparison to the interval 60-120 kg N(+PK)/ha, and when compared to the dose interval 0-60 kg N(+PK)/ha, they fall to almost one third. When alternating applications of nutrients in particular years (PK-NPK-PK, PK-0-PK, N60PK-N120PK-N240PK) the yield variation in time (Vx = 25.56-43.64%) increases enormously in comparison to habitual application of the same nutrient doses (Vx = 5.26-10.42%).

Keywords: alternating fertilization; nitrogen; aboveground phytomass production; fertilization renovation (search for similar items in EconPapers)
Date: 2004
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:50:y:2004:i:3:id:4018-pse

DOI: 10.17221/4018-PSE

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