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Vliv použití snížených výsevků jílku jednoletého na výnos osiva
Tůma, Antonín
The topic of the thesis is "Effect of reduced annual annual ryegrass seed rate on seed yield". This influence was assessed on the basis of our experiment at ŠS Slavice during 2018. The thesis describes the establishment of an experiment with annual varieties of ryegrass, inclu-ding the characteristics of the locality and varieties, growing technology and harvesting technology. During the growing season, the evaluation of yield elements took place in these stands. The results of the research were recorded in tables, graphically represented in the graphs and statistically evaluated. The half-rate reduction was the best option for statistical evaluation, which is 4.5 MKS/ha for diploid variety and 3.5 MKS/ha for tetraploid variety. The stands with this seed rate reached a yield comparable to that of full seed rate. In view of this, such a reduced seed rate can be recommended for practice, as this will reduce the input cost of a part of the seed.
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Srovnání rychlosti počátečního růstu a zápoje trávníkových druhů trav při rozdílném výsevním množství
Vaštík, Lukáš
This diploma thesis deals with the comparison of the emergence rate, the canopy cover of grasses, the depth of the rooting and the weeds cover of four turf grasses at the full and half sowing rate. There were four turf grasses sowed in the experiment: red fescue, tall fescue, perennial ryegrass and smooth stalked meadow grass, which has not emergence. The first part of this thesis is focused the review of the literature, which describes the early development of grasses, the influence of the sowing rate upon the quality of the turfgrasses and the description of the four turf grasses. The methodology of the trial describes the procedure of establishment of the experiment, the characteristics of the condition of the stand, the calculation of the sowing amount, management care of the experimental area and the dates of the ratings of the experiment. The results of the work are summed up and commentated in the part Results and Discussion. The turf grasses with the best growth rate was perennial ryegrass. The best results were shown in almost all measurements at full and half sowing rate in both autumn and spring period. Red fescue emerged 14 days in autumn, the height increase was slower than at tall fescue. In the spring sowing term of tall fescue emerged in 10 days what was faster than at red fescue (14 days) and tall fescue also had a faster increase in height. The red fescue filled the canopy cover faster, but 93 days after sowing, the canopy cover was the same at both species. The weed cover in the spring sowing was almost the same without significant differences. The Conclusion represents the summary of the results of the diploma thesis with the presentation of the most important results and the recommendations for praxis.
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The influence of stand management to production and qualitative characteristics of maize for forage and alternative uses of biomass
Vrabcová, Zuzana ; Šantrůček, Jaromír (advisor)
In years 2014 and 2015 on the experimental plots of the Czech University of Life Sciences and in Prague and Cerveny Ujezd was observed the influence of row spacing and plant density on morphological and production parameters of silage maize. Two years results show that greater influence had plant density than row spacing. At both sites were significantly affected by row spacing dry matter yield and leaf assimilation area.
Plant density affected on both sites weight of plant and leaf assimilation area. For biogas production the biggest impact had plants part, resp. cobs. Finally, year and habitats had very important influence on the monitored parameters.
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Evaluation of grain yield formation and state of health in winter wheat: line versus hybrid cultivar
MAGOČI, Jan
The aim of this thesis is the evaluation of grain yield formation and state of health of the line and hybrid wheat. For this target it was founded a one-year small-land experiment on the land of the Faculty of Agriculture of The University of South Bohemia in České Budějovice in September 2014. The experiment had 16 different variants in four repetitions, where the main factor was the different cultivar - Hybrid Hymack and line Tobak were sown at two different dates (early date 20th September, late date 29th October). In both of sowing dates, cultivars also differed in amount of seed quantity, where for Hymack it was 1,1 and 2,2 MKS/ha and for Tobak it was 3,5 and 4,2 MKS/ha. The last option was the stimulation by using the products from the company EGT and checking. During the vegetation, the number of plants per square meter, number of tillers and number of spikes were monitored and the state of health was evalueted. After the harvest were evalueted the grain yield, volume weight, HTZ and the number of grains per spike. The indicative measurement was made by the N - tester and a Sun Scan. The results achieved during the one-year small-land experiment show, that due to the influence of favorable year and high intensity of cultivation, a line cultivar Tobak achieved a higher yield (10,4 t/ha) compared to hybrid cultivar Hymack (10,4 t/ha) about 7 %. In the evaluated parameters the biggest difference was in HTZ, when Tobak had 47 grams and Hymack had 43,5 grams. This difference was the reason for higher yield of the line cultivar. Both of cultivars have achieved a better yield in the early sowing date and responded positively to the application of the growth stimulators. On the contrary, in the late date of sowing, cultivars reached a higher volume weight of the grain. During the growing season, the hybrid cultivar had better state of health and considerably higher tillering capability and the leaf area. The hybrid wheat's yield potential can be applied especially in unfavorable conditions such as drought or poor quality soil. At high intensity of cultivation supported by suitable climatic conditions, hybrid wheat hasn´t got an economic application in comparison with profitable line cultivars. The reason for this, is the high price of the seed and need for higher doses of nitrogen. The hybrid wheats are suitable for unfavorable growing regions with early sowing.
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Vliv hnojení a organizace porostu kukuřice (šířky řádků) na výnos silážní kukuřice
KRUML, Martin
The aim of my thesis was to compare the yields of silage maize (Zea mays L.) at different width lines at fertilization under the heel and at different calibration individuals per ha. For this comparison, I founded two attempts. The first trial, which concerned a drill spacing and fertilization under the heel, I founded the company in ZKS AGRO Zahořany. When you first try, I used four experimental plots, each plot'm sends corn in four ways. Every site I sent to different widths and lines on the 37.5 cm, 45 cm and 75 cm, and the fourth land, I also sent to 75 cm but no fertilizer under the heel. Then I watched all the land, and eventually I compared all the land maize yield in green stuff. For the three parcels I compared the yield depending on the width of rows and rows for seeding with a width of 75 cm, we compared the yield depending on the fertilizer under the heel. The second attempt, which concerned the size of the seed rate, I founded the company in ZOD Mrákov. In this experiment, I sewed maize on one plot. On this land, I imposed a 6 plots. On these plots, I used 3 sizes calibration and 85000, 95000 and 105000 individuals / ha. I also 3 plots, these calibrating, sent to the line width of 37.5 cm, and the remaining three plots on the line width of 75 cm. These plots I watched the whole vegetation period and finally I compared the yields from each plot of land in the green stuff.
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