"RIV/60460709:_____/03:00005608!RIV/2004/MZE/410004/N" . "The data of main areas of sugar beet growing and weed beet spread in CZ are presented. The study included morphological and genetic diversity of weed beets in CZ. In addition, the reproduction and spreading under field conditions, control methods and the ir efficacy, cultural practices which influence the spread at present were examined. Weed beet plants show high phenotypic and genetic variability. Plant with different life history, growth habit, maturing time and seed production can be found. The seed production was about 1500 seeds per plant. The efficacy of control is low in general, and not sufficient to reduce population density." . . . . . "The data of main areas of sugar beet growing and weed beet spread in CZ are presented. The study included morphological and genetic diversity of weed beets in CZ. In addition, the reproduction and spreading under field conditions, control methods and the ir efficacy, cultural practices which influence the spread at present were examined. Weed beet plants show high phenotypic and genetic variability. Plant with different life history, growth habit, maturing time and seed production can be found. The seed production was about 1500 seeds per plant. The efficacy of control is low in general, and not sufficient to reduce population density."@en . "Holec, Josef" . . "P(QD1360), Z(MSM 412100002)" . "0"^^ . . "ESF a Universiteit Van Amsterdam" . "0"^^ . "2"^^ . . "weed beet; spread; occurrence; diversity; control methods"@en . "RIV/60460709:_____/03:00005608" . "2"^^ . "Soukup, Josef" . . "2003-01-21+01:00"^^ . . "Agronomical aspects of weed beet occurrence and spreading on arable land"@en . . "Amsterdam" . "Amsterdam" . . . "597641" . . "55" . . "Agronomical aspects of weed beet occurrence and spreading on arable land" . . . "Proceedings of Introgression from Genetically Modified Plants into wild relatives and its consequenc" . . "1"^^ . . . . "Agronomical aspects of weed beet occurrence and spreading on arable land"@en . "Agronomical aspects of weed beet occurrence and spreading on arable land" . "[B86280AC7030]" . .