The influence of organic manuring on the physical soil properties and the content of soil organic matter in long - term monoculture
2009
Babulicová, M., Research Institute of Plant Production, Piešťany (Slovak Republic) | Kotorová, D., Research Institute of Plant Production, Piešťany (Slovak Republic)
With regard to the threats brought about by continuous cropping the Research Institute of Plant Production Piešťany were carried out a field investigation in 1974 - 2009 concerning the questions: What are the possibilities of the decreasing the negative impacts of the continuous cropping of cereals? Stationary trial was established in 1974 in the experimental station Borovce, on a medium heavy textured soil (Luvi-Haplic Chernozem on loess). Three variants of fertilization were used. In the years 2007 - 2008 the effect of mineral and organic fertilization on the physical and chemical properties of winter wheat and spring barley in continuous cropping was investigated. It can be supposed that the supplied organic matter in the form of ploughed in cereal straw or in the form of ploughed in cereal straw and organic manure Veget contributed to a higher total porosity, increasing of maximum water capillary capacity and increasing of content of humus. It is not possible to exclude that the differences can bring about the heterogeneity of soil, too. The combination of straw ploughed in with the organic manure Veget had a positive impact on the soil moisture maintenance, on the air content, seems much more suitable. By the continuous cropping of spring barley at the variant with ploughed in straw the lowest content of organic carbon, the lowest content of potassium and phosphorus and the lowest total porosity was found in this variant. The present results are showing that the continuous growing of spring barley contributed to a stronger decline of soil physical and chemical properties than the continuous cropping of winter wheat. These findings can be explains by the different root systems of winter wheat and spring barley.
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