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National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
Stanovení vztahu aktuálního a potencionnálního zaplevelení svízelem přítulouGalium aparine/, zhodnocení vlivu některých faktorů na klíčení a vzcházení tohoto plevele
 Hradil, Radomil
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Vyhodnocení aktuálního zaplevelení v různých typech osevních postupů
 Vacl, Miroslav
The goal of this diploma thesis was to evaluate the weed infestination and to state differences in weed infestination in monoculture, Norfolk and different soil tillage technologies. The weed infestination was carried out on experimental plots of the Agricultural Research Institute in two periods during the spring crop emergence and in summer before the harvest. Weed species, their number and abundance were deteriminated on each of the experimental plots. To the representativeness of the research was ensured by selecting of eight samples from an area of 0.25 square meters. The monoculture spring barley was infested with the following weeds: Amaranthus retroflexus, Chenopodium album and Elytrigia repens. The monoculture winter wheat was infested with: Gallium aparine and Polygonum lapanthifolium. The most abundant species were occured Amaranthus retroflexus, Chenopodium album and Elytrigia repens in clover and beet in crop rotation Norfolk. The technology occurred species Echinochloa crus-galli, Chenopodium album and Anagalis arvensis in minimizing peas and canola. The weeds were also presented in smaller quantities in soil tillage technology. The winter wheat and spring barley were infested with: Lamium amplexicaule, Gallium aparine and Polygonum lapanthifolium in the both technologies.
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Studium vztahu potenciálního a aktuálního zaplevelení
 Žádník, Ondřej
The aim of practical part of the thesis was to evaluace the potential and the current weeds inflestation on eacha creof winter wheat and winter rape. Together Comparethe the intensity of weed inflestation between individual hunts and crops. At anactual weeds inflestation in crops of winte rwheat the most species occurred was Veronica persica a Stellaria media. Often times in the number of over 10 individuals per sqvare meter. Further there in smaller qvantities was represented Elytrigiarepens, Galium aparine, Laliumpurpureum, Tripleurospermum indium and other type s of weeds. From the results of a potential weed infestationis evident that stands of winter wheat and winter rape on all plots the most kind Chenopodium album. There fare , in order to have land best prepared for growing crops you must know the biology of weeds. It is Essential to create conditions that are unsuitable for weeds and vice versa beneficial for grown crops. It is esential regular essessment kontrol of weeds on individual hunts. For bette rcontrol of weeds in the monitored landis desirable to conductat the time of vegetation and regular inspectionper formed before the application of herbicide to evaluate specific spektrum of weeds. When using a herbicide isnecesary to know the result sobtained by monitoring the health of weed inflestation and according lyadapt the selection of a suitable herbicide rate.
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