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Viola arvensis Murray is in Czech Republic the important field weed. They were observed production and germinating of seeds in various conditions (influence on light, temperature, time of bedding after ripening), spread of seeds, germination and evolution of plant. It was prove positive influence darkness in germination of seeds and influence of low temperature on interfere with dormancy. After reach of results are production of seeds, their properties, spread on the area and rapidity of the evolution of plants there is assumption of the hight dynamism of this species.