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Effect of autumn and spring terms of azole regulators application on seed yield formation in winter oilseed rape
KRÁL, Petr
This thesis deals with the issues of the plant-growth regulators in winter rapeseed. The main part of the thesis is publishing a 2-years-old results of the year 2013/14 and 2014/15, which have been obtained from the small-plot experiments realized on the experimental land of the Faculty of Agriculture of The University of South Bohemia. Three kinds of varieties in a reduced and optimal seed quantity were included in these experiments: line (Remmy), hybrid (H906699) and variety PX 104. The optimal seed quantity was 50 seeds per square meter for a hybrid and PX 104 varieties and 60 seeds per square meter for a line variety. Reduced seed quantity was 33 seeds per square meter for the hybrid and PX 104 varieties and 40 seeds per square meter for the line variety. Three types of applications of the azole preparations were tested for each variety and seed quantity: the first control, the second - treatment in the autumn, the third option - treatments in the autumn and spring. All variants were realized in four repetitions. During the experiments it was observed the influence on the yield of seeds, weight of thousand seeds, percentage of oil, number of plants per square meter and content of the nitrogen compounds in the rapeseed meal. The highest increase of the yield (amounting to 0,94 t/ha) was recorded in 2014 in the variant of a hybrid variety with a density of 33 plants per square meter with autumn and spring application of growth regulators (control 6,82 t/ha, autumn + spring treatment by plant growth regulators - 7,76 t/ha). Similar results were achieved in 2015. In conclusion, it may be said that azole preparations achieve the best results in sparse stands of winter rapeseed.
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Evaluation of spring application of growth regulators and stimulators in winter rape crop stands from selected farm
HNILIČKA, Ladislav
The work is focused on spring application of plant growth regulators and the operating conditions of agricultural society Kosova Hora, as Preparations were applied during the growth phase stands 32-33 BBCH scale, with 2 types of varieties - a line of hybrid canola varieties. 3 preparations were evaluated (Galleko, Toprex, Caryx) and one untreated area for control of the comparison of products. During the vegetation period were gradually on individual plots monitored the main elements of the plant yield (number of plants, number of pods, HTS, the number of branches). After harvesting canola yield was determined at the experimental plot. Results showed a positive reaction to stand on the treated area CARYX product. Attainment and income (4, 53 t / ha) on the experimental plot was achieved on a plot of hybrid rape. Difference treated variants compared to the control side were 0, 28 t / ha. This result is not statistically provable. The results are largely influenced the course of weather throughout the growing season. For better statistical power experiment would be preferable to multi attempts.
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