Rational use of fertilizers in an agricultural farm can increase its economical stability.
The analysis of data of the agrochemical soil properities in the vegetation of winter rape in a five year period showed if the fertilization system of Zemědělská společnost Chrášťany s.r.o. is set appropriately and where are the eventual reserves.
The analysis rates between the yield of winter rape and the individual nutrients content in the soil (P, K, Mg, Ca) and pH were calculated with the use of the analysis of correlation and regression. The same method was used in the evaluation of pure nutrient dosage in the applied fertilizers. The order of importance of the nutrients for the yield was determined according to the value of the coefficient of the correlation between the yield of rape and the examined elements. The examined period was consisted of the years 2011, 2012, 2013 and the analysed area of winter rape reached averagely 190 ha in each year, which was divided into 10 soil blocks.
The assumption that N fertilizing is going to have a greater influence on the growth of winter rape yield in soils with worse agrochemical soil properties, then on soils with greater nutrient reserve and a satisfactory soil reaction was confirmed. It is influenced by the fact of which nutrient is in minimal quantities in the soil. With the same N dosage the yield was better on soils with better agrochemical properties. The importance of usage of K fertilizers within years 2013-2015 is rising. The analysis pointed towards a strong influence of K on the yield especially in those three years. Greater influence of nutrients (P, K, Mg) from the soil reserve on the yield of winter rape was in years 2013 and 2014 with favourable weather than in other years. The recommendation of adjustment of the reserves of nutrients K, Mg and Ca in the soil according to the results of AZZP seems effective.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:257896 |
| Date | January 2016 |
| Creators | Klasová, Michaela |
| Contributors | Černý, Jindřich, Jan, Jan |
| Publisher | Česká zemědělská univerzita v Praze |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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