Changes in soil properties and possibilities of reducing environmental risks due to the application of biological activators in conditions of very heavy soils
Laen...
Kuupäev
2020
Kättesaadav alates
Autorid
Šařec, P.
Látal, O.
Novák, P.
Holátko, J.
Novák, V.
Dokulilová, T.
Brtnický, M.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
This study aims at verifying the effect of farmyard manure (FYM) and of selected
activators (Z'fix and NeoSol) on changes of soil properties. Their application should lead to
improvement of soil physical properties and of organic matter fixation, to reduction of
environmental risks, e.g. of tillage energy requirements. Experimental variants (0.7 ha each) were
as follows: I (FYM with Z'fix); II (FYM with Z'fix + NeoSol); III (FYM); IV (Control NPK only).
FYM was applied at rates: 50 t ha-1
(2014); 30 t ha-1
(2016). Additional NPK fertilizer (I–IV) was
applied according to annual crop nutrient normative. The agent Z'fix was used as an activator of
FYM biological transformation (5.5 kg t
-1
). The agent NeoSol was used as soil activator
(200 kg ha-1
; annually). In order to verify the effect, cone index, bulk density, tillage implement
draft and chemical soil components (Humus, C/N ration and Ntot) were measured annually.
Compared to the control, the application of FYM combined with the mentioned agents (I–III)
increased Ntot more than two times. Moreover, it decreased (I–III) bulk density by 8.7%. Tillage
implement draft decreased by 3% after the application of FYM with Z’fix (I, II). The study
confirmed that FYM application combined with utilization of activators positively influenced soil
fertility and helped to reduce environmental risks.
Kirjeldus
Märksõnad
cone index, implement draft, bulk density, nitrogen, humus, C/N ratio, farmyard manure, articles