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Minimalizační a půdoochranné technologie uplatněné při pěstování kukuřice na zrno
Adámek, Josef
This bachelor thesis compares the influence of various examples of soil tillage on the changes of soil properties and grain corn yield. It contrasts measuring results from a long-term experiment of grain corn monoculture. The thesis uses results from years 2012 to 2014. The field experiment was carried out in a grain corn production area on brown medium heavy soil. There were three alternatives of soil tillage compared -- convention tillage, minimum tillage and no-till. During the observed time from 2012 to 2014, the highest average yield was achieved in the alternative with convention tillage. The highest average grain corn yield was reached in 2013 with convention tillage (10,2 t.ha-1), the lowest in 2014 with no-till (4,99 t.ha-1). The comparison of the influence of various examples of soil tillage on the soil properties showed values which refer to the problem of soil compaction. This finding was proved also by soil research with the help of penetrometer measuring. Critical values of soil compaction were detected in the depth of 0,10-0,30 m in the no-till alternative. This compaction results in the decrease of minimal air capacity under 10 %. Excessive soil compaction was also detected in the depth of 0,20-0,30 m in the minimum tillage alternative. Negative compaction was not proved in the convention tillage alternative. From the observation results and experience gained from practice it is possible to recommend minimum tillage as the most optimal alternative for grain corn production in this area. The use of minimization is optimal for grain corn growth and evolution and in comparison with convention tillage it is more soil-friendly, more efficient with regard to the use of labour force and more profitable.
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Minimalizační a půdoochranné technologie uplatněné při pěstování kukuřice na zrno
Adámek, Josef
This bachelor thesis compares the influence of various examples of soil tillage on the changes of soil properties and grain corn yield. It contrasts measuring results from a long-term experiment of grain corn monoculture. The thesis uses results from years 2012 to 2014. The field experiment was carried out in a grain corn production area on brown medium heavy soil. There were three alternatives of soil tillage compared -- convention tillage, minimum tillage and no-till. During the observed time from 2012 to 2014, the highest average yield was achieved in the alternative with convention tillage. The highest average grain corn yield was reached in 2013 with convention tillage (10,2 t.ha-1), the lowest in 2014 with no-till (4,99 t.ha-1). The comparison of the influence of various examples of soil tillage on the soil properties showed values which refer to the problem of soil compaction. This finding was proved also by soil research with the help of penetrometer measuring. Critical values of soil compaction were detected in the depth of 0,10-0,30 m in the no-till alternative. This compaction results in the decrease of minimal air capacity under 10 %. Excessive soil compaction was also detected in the depth of 0,20-0,30 m in the minimum tillage alternative. Negative compaction was not proved in the convention tillage alternative. From the observation results and experience gained from practice it is possible to recommend minimum tillage as the most optimal alternative for grain corn production in this area. The use of minimization is optimal for grain corn growth and evolution and in comparison with convention tillage it is more soil-friendly, more efficient with regard to the use of labour force and more profitable.
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Rozbor technických a technologických parametrů pojízdných zdvihacích pracovních plošin v arboristice
Marek, Jakub
Bachelor thesis deals with using mobile elevating work platforms (MEWP) in arboriculture. This thesis solves three main objectives. In the first part I write about MEWP in general and I try to describe various types of MEWP. Next part focuses on comparing tree climbing and using the MEWP, analyses the differences and considers their advantages and disadvantages (in terms of economy, safety and time). In the last, practical part I investigate the effect of using the MEWP on the soil in the tree neighbourhood. The main task of this part is measuring the soil compaction while using the MEWP.
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