Effect of grazing intensity and dung on herbage and soil nutrients

Klára Pavlů, Teowdroes Kassahun, Chukwudi Nwaogu, Lenka Pavlů, Jan Gaisler, Petr Homolka and Vilém Pavlů
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Klára Pavlů: Department of Ecology, Czech University of Life Sciences Prague, Prague, Czech Republic
Teowdroes Kassahun: Department of Ecology, Czech University of Life Sciences Prague, Prague, Czech Republic
Chukwudi Nwaogu: Department of Ecology, Czech University of Life Sciences Prague, Prague, Czech Republic
Lenka Pavlů: Department of Weeds and Vegetation of Agroecosystems, Crop Research Institute, Prague, Czech Republic
Jan Gaisler: Department of Weeds and Vegetation of Agroecosystems, Crop Research Institute, Prague, Czech Republic
Petr Homolka: Department of Nutrition and Feeding of Farm Animals, Institute of Animal Science, Prague, Czech Republic
Vilém Pavlů: Department of Ecology, Czech University of Life Sciences Prague, Prague, Czech Republic

Plant, Soil and Environment, 2019, vol. 65, issue 7, 343-348

Abstract: Dung deposited by grazing animals is a key driver affecting sward structure and nutrient cycling in pastures. We tested herbage and soil properties in three types of tall sward-height patches (> 10 cm): (i) patches with dung under intensive grazing; (ii) patches with dung under extensive grazing; and (iii) patches with no dung under extensive grazing. These patches were compared with grazed swards under intensive and extensive grazing. Analyses indicated no significant effect of different types of patches on plant available nutrients. Herbage nutrient concentrations from the different types of patches differed significantly. The highest concentrations of nitrogen (30.65 g/kg), phosphorus (4.51 g/kg) and potassium (22.06 g/kg) in the herbage dry matter were in the tall patches with dung presence under intensive grazing regime because of nutrients from dung utilized for sward regrowth. Regardless of dung presence, similar herbage nutrient concentrations were revealed in non-grazed tall sward-height patches in extensive grazing regime. The presence of dung did not have any effect on the plant available nutrients in any type of patches, therefore we suppose that non-utilized nutrients were probably leached, volatilised or transformed into unavailable forms and thus soil nutrient enrichment was low.

Keywords: heifer grazing; faeces; grassland; grazing management; plant-soil relationship (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:65:y:2019:i:7:id:177-2019-pse

DOI: 10.17221/177/2019-PSE

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