Effect of various organic and mineral fertilizers on the yield and the quality of mountain meadow hay
1998
Mazur, K. | Kopec, M. | Fecenko, J. | Lozek, O. (Agricultural Univ., Cracow (Poland))
In two year microplot experiment on mountain meadow (720 m a.s.l.) there was investigated the fertilising effect of Superhum with urea and substances containing microelements necessary for plants and the fertilising effect on raw sludge from biological tannery waste treatment plant following chromium separation, and composts and vermicomposts (Eisenia felida) of the sludge with corn straw, peat, wood sawdust and tree leaves. Superhum is an organo-mineral liquid fertilizer developed on the basis of humic acids produced by alkaline extraction from oxyhumolite and enriched with mineral nutrients from inorganic fertilizers which are manufactured in Duslo Sala [chemical plant for agricultural chemicals production] (Slovak Republic). Superhum was developed at the Department of Agrochemistry and Plant Nutrition at the Slovak Agricultural University in Nitra. The soil (light loam) revealed acid reaction and was poor in available phosphorus and potassium compounds. Organic fertilizer doses contained 100 kg N in conversion to 1 ha. Phosphorus and potassium were supplemented in organic fertilizers up till their highest amounts. In the first year of mineral treatment, Superhum and straw and peat vermicomposts gave the best effects, and in the second year Superhum and all vermicomposts
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