National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Polní plevele a jejich výskyt ve vybraných polních plodinách
Pfefr, Ladislav
The aim of this thesis was to evaluate the weed infestation of chosen crops on lands of Agrospol a. d., Knínice. The evaluation was carried out in growths of corn, sunflower and opium poppy. The weed infestation was processed by canonical correspondence analysis (CCA). Species as Equisetum arvense, Echinochloa crus-galli, Thlaspi arvense, Veronica persica, etc. were identified in corn. Species Echinochloa crus-galli, Amaranthus sp., Avena fatua, etc. were found in sunflower. Weeds as Symphytum officinale, Equisetum arvense, Chenopodium album, Viola arvensis, etc. occurred in opium poppy.

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