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W pracy przedstawiono wyniki wieloletnich badań dotyczących zmian ilościowych rozpuszczalnego manganu i żelaza w glebie w zależność od udziału zbóż w plodozmianie, deszczowania i nawożenia azotem. Wykazano, że spośród badanych czynników istotny wpływ na zawartość obu pierwiastków miały tylko plodozmiany oraz współdziałanie czynnika wodnego z azotem.
Changes in the quantity and quality of soil humus as well as in the content of heavy metals and microelements at the Research Institute of Agroecology in Michalovce in two soil types: Eutric Flu vis ol at Vysoká and Flu vieutric Gleysol at Milhostov were investigated. The effects of crop sequence in crop rotations on humus quantity and quality as well as content of heavy metals were also studied....
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