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- W86157890 abstract "Felmertuk a nad (Phragmites australis) szantofoldi elterjedeset az Orszagos Gyomfelvetelezesek alapjan. A legnagyobb boritas Csongrad megyeben tapasztalhato 1,44%., de jelentős Hajdu-Bihar 0,97%, Jasz-Nagykun-Szolnok 0,92% es Heves 0,69% fertőzottsege is. Vizsgaltuk a Cirsium arvense, Convolvulus arvensis, es Rubus fruticosus tapanyagfelvetelet es szaporitogyokereinek regeneralodasat. A vegetativ szaporitokepletekkel tortenő regeneralodas julius, oktober es november honapokban a leghatekonyabb. A Rubus fruticosus eseteben sikerult bebizonyitani a regeneralodas funkcionalis szerveiben a szezonalitast es a tavaszvegi-nyarelei rugynyugalom megletet. Tanulmanyoztuk az Asclepias syriaca es a Cirsium arvense novenyi maradvanyinak allelopatiajat nehany tesztnoveny csirazasara es novekedesere. Az elbomlo novenyi maradvanyok 0-29%-os csirazascsokkenest es 1-58%-os zoldtomeg csokkenest okoztak. Vizsgaltuk a Taraxacum officinale csirazasbiologiajat. Megallapitottuk, hogy a frissen erett kaszatok nem rendelkeznek primer magnyugalommal erest kovetően, egesz evben-megfelelő kornyezeti feltetelek eseten- egyenletesen (43,24-82%) csiraznak. A feny serkenti a csirazast. Az Asclepias syriaca, Cirsium arvense, Convolvulus arvensis magvairol es szaporito gyokereiről tobb mikroszkopikus gombafajt izolaltunk. A gombafajok egy resze felhasznalhato lehet a vizsgalt evelő gyomnovenyek elleni biologiai vedekezesre. | On the basis of the Four National Weed Surveys distribution of Phragmites australis was evaluated in Hungary. Csongrad is the most infected county (1.44% cover), but Hajdu-Bihar (0.97%), Jasz-Nagykun-Szolnok (0.92) and Heves (0.9%) counties are also among the infected areas. The dynamic of nutrient uptake and vegetative reproduction of Cirsium arvense, Convolvulus arvensis and Rubus fruticosus was also investigated. Vegetative reproduction is the most effective in July, October and November. Periodicity and late spring dormancy were observed in regeneration of R. fruticosus. The effect of Asclepias syriaca and Cirsium arvense plants residues on the germination and development of some test species was also studied. Plant residues caused a 0-29% and 1-58% reduction in germination rate and fresh weight of test plants, respectively. Regarding germination characteristics of Taraxacum officinale no primary dormancy of the freshly harvested seeds was observed. Achenes germinated well (between 43-82%) during the whole year, when environmental conditions are favourable. Light promoted germination. A lot of phytopathogen fungi was isolated from seeds and vegetative reproductive organs of Asclepias syriaca, Cirsium arvense and Convolvulus arvensis. A part of them as mycoherbicide can be useful in biological weed control." @default.
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- W86157890 date "2007-01-01" @default.
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- W86157890 title "Néhány fontosabb évelő gyomnövény kártétele, szaporodási stratégiája és integrált gyomszabályozása = Importance, reproductive strategy and integrated weed management of several perennial weeds" @default.
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