[Dependence of hop quality on trace element fertilizers application]
2008
Milosta, G.M. | Regilevich, A.A., Grodno State Agrarian Univ. (Belarus)
Research realized on sod-podzolic sandy-loam soils formed on moraine loams in the Western part of the Republic of Belarus showed that trace element fertilizers application exercised the significant influence on the increasing of content of alpha-acids in cones of hop (Humulus lupulus) of Hallertauer Magnum cultivar. In the control variant (without fertilizers) the content of alpha-acids was 10,4% (soil I) and 10,3% (soil II) and after organic and mineral fertilizer application the content of alpha-acids increased up to 11,2% and 11,3%, respectively. The degree of fertilizer application influence on alpha-acids content could be ranked in the following descending order: copper zink boron (on soil I), and copper zink, boron (on soil II with lack of boron). The maximum content of alpha-acids per hop unit area was obtained after the combined topdressing application of boron and zinc fertilizers (B(0,1+0,1+0,1)Zn(0,1+0,1+0,1)) as well as copper (Cu(0,15+0,15+0,15)) and zinc fertilizers (Zn(0,15+0,15+0,15)) against the optimal background of the organic (30 t/ha) and mineral fertilizers (N180P120-180K160-240)
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