PĚSTOVÁNÍ PŠENICE V SETRVALÉM ZEMĚDĚLSTVÍ

The aims of the bachelor study titled Wheat Production in Sustainable Agriculture were to compare wheat production levels of organic and conventionally managed fields, namely, to assess the influence of the fertilization regime on the formation of yield elements and also, to assess the overall yield ability of selected winter wheat varieties. A small field with winter wheat varieties located on the university grounds was used as an experimental site for this study. The site is located in Ceske Budejovice in South Bohemia at an altitude of 380 m, with average annual temperature reaching 7.8 °C and with the average rainfall of 620 mm. Four varieties (two hybrids nad two lineages) were examined under three different fertilization treatments: no nitrogen fertilizer, nitrogen fertilizer and organic fertilizer (clover-based). The study has found that the choice of the variety appears to have most impact on the overal yield. Hybrid varieties outperformed lineage varieties in overal grain yield, despite the fact that lineage varieties produced higher results in regard to the following yield factors: the number of plants, offshoots, ears, grains in the ear per m2 and weight of 1000 grains. The choice of fertilization treatment seemed to influence the crops outcomes less substantially than the choice of the variety per se. While the influence of the fertilization treatment was secondary, nitrogen-fertilized plots produced the highest grain yields (7,78 t.ha-1),, organic fertilization (clover) produced average results (7,59 t.ha-1), and the the lowest yield has been predictably produced in non-fertilized site (7,05 t.ha-1)