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The effect of fertilization and locality on yield of spring barley
Koželuh, Josef ; Černý, Jindřich (advisor) ; Kovářík, Jakub (referee)
This Bachelor thesis is focused on evaluating the impact of fertilization of spring barley by organic and mineral fertilizers, and comparing their effects on yield and quality. The literature search sought to determine spring barley requirements for environmental factors, nutrition and fertilization, and to determine cultivation problems, such as lodging, pests and disease. As an experiment included in my thesis, I conducted the long-term field study on plant nutrition, being performed since autumn 1996 at the Department of Agro-environmental Chemistry. In this study, three crops rotate in the following order: potatoes, winter wheat, spring barely. In the area of Červený Újezd the corn is used instead of potatoes, due to the agrotechnical reasons. The study took place at five areas (Suchdol, Červený Újezd, Humpolec, Lukavec, Hněvčeves). These are areas with different soil and climatic conditions, which are used to assess the influence of habitat. The experiment was conducted under several controlled conditions. The Control area was left fertilizer-free. The variant Manure involved organic fertilization with the potato-intended manure, with estimated dosage of 330 kg N/ha. Variant Kal was also fertilized with potato-intended manure, with the same amount of nitrogen as variant Manure. Variant Manure 1/2 + N was organically fertilized by the manure at a dose of 165 kg N / ha and subsequently fertilized for spring barley at a dose 55 kg N / ha in the form of ammonium nitrate with limestone (ANL). Variant N received only mineral fertilization 70 kg N/ha with ANL. In the Variant NPK, only mineral fertilizers were used (ANL, triple superphosphate, potassium salt) with the total dosage 70 kg N/ha, 30 kg P/ha, 100 kg K/ha. Variant N+straw was fertilized with 70 kg/ha of mineral nitrogen and a straw was always plowed after harvesting spring barley. The results clearly show that Červený Újezd is the most suitable area for the cultivation of spring barely. This experiment also confirmed substantial influence of fertilizer on the quality and yield of grain, as well as the influence of the habitat. NPK variant had the highest yield and quality in most locations, hence a variant with mineral fertilizers containing three basic nutrients. From the economical view, Control variant only was evaluated. Profitable production was reached only at sites Suchdol and Červený Újezd.
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