Przemysl Chemiczny, Vol.92, No.4, 559-562, 2013
Effect of soil-applied doses of zinc on its content in the leaves of hops, on the yield and on the content of alpha-acids
ZnSO4 center dot 7H(2)O was added to soil (Zn doses up to 4000 g/ha) for hop cultivation in 2005-2007 to det. the effect of Zn on the hop yield and content of a-acids under field test conditions. The Zn content in the soil and in hop leaves increased with increasing Zn doses. No significant effect of Zn addn. to soil on the hop crops and alpha-acid content in hops was obsd.