Abstract
Woolly cupgrass (Eriochloa villosa /Thunb./ Kunth) is native to East Asia, it spreads in several parts of the World and causes difficulties in plant protection, especially in maize. Difficulties in control of Eriochloa villosa originated from several reasons: seeds continue to germinate later in the season, significant part of seeds emerges from a deep layer of the soil, and the species is less susceptible to some herbicides applied to maize than other annual grass weeds.The first report on the occurrence of woolly cupgrass in Hungary was published in 2008, and it reported about the appearance of this species near to Gesztely village (Borsod-Abaúj-Zemplén county), however, no information has been added about spread of the weed in Hungary until now.A significant population was discovered next to Debrecen (Hajdú-Bihar county) in summer, 2011, and then weed associations were examined in maize, sunflower and stubble-fields on several km2 in the area to estimate the Eriochloa villosa infection. The weed species was found on every maize field bordering with a ground cover of 0.5-4%. Woolly cupgrass occurred inside of the 50% of maize fields, and reached a ground cover of 76% in case of most infected area, in addition it was found in sunflower and stubble-fields.The spread of woolly cupgrass is expected in this area, which requires the consideration of this species in the planning of weed management technologies.
Highlights
The spread of woolly cupgrass is expected in this area, which requires the consideration of this species in the planning of weed management technologies
Hartzler et al (1999) szintén arról számolnak be, hogy az első évben volt a legnagyobb arányú a csírázás, majd gyorsan kimerült a magkészlet
Cupgrass occurred inside of the 50% of maize fields, and reached a ground cover of 76% in case of most infected area, in addition it was found in sunflower and stubble-fields
Summary
The spread of woolly cupgrass is expected in this area, which requires the consideration of this species in the planning of weed management technologies. Az ázsiai gyapjúfű (Eriochloa villosa /Thunb./ Kunth) Kelet-ázsiai eredetű faj, mely ázsiai terjeszkedése mellett a múlt század 40-es éveiben jelent meg Észak-Amerikában, és az utóbbi évtizedekben rohamosan elterjedt az Egyesült Államok több államában, ahol elsősorban a kukorica különösen káros és nehezen irtható gyomjaként tartják számon (Mickelson és Harvey, 1999). Magyarországi előfordulását 2007-ben fedezték Gesztely községben, Borsod-Abaúj-Zemplén megyében (Partosfalvi et al, 2008), újabb élőhelyen azóta nem írták le, így hazai terjedéséről több információ nem áll rendelkezésre. A pázsitfüvek családjába tartozó gyomnövény, mely az Ujvárosi életforma rendszer szerint a T4-es életformába sorolható.
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