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Evaluation of winter oilseed rape yield of Pioneer company cultivars
DOSTÁL, Petr
This bachelor thesis deals with winter oilseed rape. The focus is placed on history, importance of cultivation, characteristics, yield creation and influencing factors. Attention is given to technology of winter oilseed rape cultivation, to selected oilseed hybrids of Pioneer company and to economy as well. The main chapter consists of the harvests results in the Czech Republic from 2014 until 2018. Another chapter is the response to the use of growth regulators in both semi-dwarf and normal straw hybrids. From the results of the thesis it was found out that the seed yields of semi-dwarf rape are comparable to those of normal straw hybrids. However, it strongly depends on the technology of cultivation and the climatic conditions of the given year and habitat as well.
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Možnosti využití metody Mehlich III k posouzení obsahu přístupné síry v půdě
Ruška, David
The aim of this paper was to evaluate if accessible sulphur analyses in soil are relevant for Agrochemical Soil Testing (AZZP). This issue was assessed in the years 2014/2015. Samples to be taken in 2015 were selected according to results on sulphur analyses in Mehlich III extraction agent in 2014. It means that the first sampling was carried on in the autumn 2014 and second in the spring 2015. Plans were sampled together with soil in 2015. Seven regions were included in the sampling scheme (Brno, Planá (České Budějovice), Plzeň, Opava, Havlíčkův Brod, Liberec and Prague) and plots with winter wheat and winter rape were sampled. Majority (78 %) of soils samples measured on accessible sulphur content falls into the range 10,1 - 20,0 mg.kg-1. Average contents of accessible sulphur in soils in the autumn and spring were almost identical and there are no statistical differences amongst regions. Influence of fertilising on sulphur content in soils was not confirmed, however, sulphur fertilization positively influences the sulphur content both in rape and wheat plants. The content of accessible sulphur in soils in the spring positively correlates with sulphur content in rape. Based on current nutrient normative, 59 % of wheat plants are below the value when yield decrease may occur. In the case of rape it is more than 90 % of plants (samples). It does not seem to be suitable to include accessible sulphur measurement in soils into the AZZP system. The six-year cycle of AZZP is rather too long if soil sulphur mobility and dynamics is taken into account.
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Druhové složení plevelů vybraných polních plodin v provozních podmínkách
Vykydalová, Lucie
The aim of this work is to identifily the current coverage of fields by plants on a specific farm. The chosen farm was Uniagris a.s. Observation took place in growth areas of winter rate, winter wheat and corn wheat. Evalution was carried out counting methods. The results of the weed infestation evaluation were processed with the DCA analysis. The canonical corespondence analysis showed that, in the poppy were found : Cirsium arvense, Fallopia convolvulus, Papaver rhoeas, Tripleospermum inodorum, Chenopodium album, Polygonum aviculare, Brassica napus. In the winter rapeseed were: Capsella bursa-pastoris, Descurainia sophia, Euphorbia helioscopia, Fumaria officinalis, Galium aparine, Lamium purpureum, Myosotis arvensis, Papaver rhoeas, Thlaspi arvense, Veronica hederifolia, Viola arvensis. In spring barley were: Fallopia convolvulus, Galium aparine, Papaver rhoeas, Thlaspi arvense, Chenopodium album, Polygonum aviculare. In corn wheat were: Echinochloa crus-gali, Equisetum arvense, Fallopia convolvulus, Brassica napus, Viola arvensis. In winter wheat were: Agropyron repens, Brassica napus, Cirsium arvense, Echinochloa crus-gali, Equisetum arvense, Fallopia convolvulus, Galium aparine, Lamium puprureum, Tripleospermum inodorum,Veronica hederifolia, Viola arvensis. In sugar beet were: Cirsium arvense, Fallopia convolvulus, Triticum aestivum, Veronica hederifolia, Chenopodium album, Polygonum aviculare.
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Vyhodnocení a analýza zaplevelení vybraných polních plodin v provozních podmínkách
Hlavica, František
This thesis is focused on weed infestation evaluation of winter oilseed rape and winter wheat growths on selected land of ZD Kelečsko Kelč, in years 2011 -- 2013, futhermore on assesments of weed infestation differences between crops and particular years. Weed infestation was detected by numerical counting method and evaluation were processed by DCA analysis. Leftover of previous crop appeared the most frequently in winter oilseed rape, with weeds from the family Brassicaeae - Thlaspi arvense, Viola arvensis and Capsella bursa -- pastoris followed. 22 weeds and weedy species were found in total. Galium aparine, Viola arvensis, Veronica spp. occured the most often in winter wheat. 21 weeds and weedy species were found here. The growth of winter oilseed rape were more weedy than wheat.
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Porovnání různých technologií pěstování ozimé řepky
Kamanová, Vendula
The aim of this study was to compare the cropping technologies of winter oilseed rape in six farms in twelve field stands in potato production area. The comparison was made in the production season 2012-2013. For all field stands records of technological operations were kept. In autumn, an assessment of quality of established crop stands and state of oilseed rape was made before the winter season. In the spring, the inventory of stands after overwintering was made and before harvest followed a data collection for the assessment of yield making up components. After harvest, the yield was assessed and then compared with the estimated yield. There were found out qualitative parameters after seed analyses in the laboratory. The costs were assigned to individual work operations and material inputs. Rape was grown after different previous crops. For location used in bachelor work was shown that the most appropriate previous crop was winter barely. Different varieties were compared, but with various success. The highest yield had a hybrid variety PR45D03. This confirms the importance of balanced fertilization of winter oilseed rape and well-timed interventions against harmful agents. A comparison of cultivation technology and the subsequent calculation of costs and benefits showed that the amount of profit does not depend on the amount of yield level.
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Aktuální zaplevelení vybraných polních plodin v provozních podmínkách
Vykydalová, Lucie
The aim of this work is to identifily the current coverage of fields by plants on a specific farm. The chosen farm was Uniagris a.s. Observation took place in growth areas of winter rate, winter wheat and corn wheat. Evalution was carried out counting methods. The results of the weed infestation evaluation were processed with the DCA analysis. The canonical corespondence analysis showed that, in the winter rape were found Thlaspi arvense, Triticum aestivum, Euphorbia helioscopia, Lamium purpureum, Capsella bursa-pastoris, Viola arvensis, Galium sarine, Cardaria draba, Descurainia sophia,. In winter wheat were Galium aparine, Veronica hederifolia, Lamium purpureum, Cirsium arvense, Agropyron repens, Equisetum arvense, Fallopia convolvulus, Viola arvensis, Tripleospermum inodorum. In the corn wheat were found Galium aparine, Veronica hederifolia, Lamium purpureum, Cirsium arvense, Agropyron repens, Equisetum arvense, Fallopia convolvulus, Viola arvensis, Tripleospermum inodorum
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