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'Poa annua' in keywords Facet   Publication Year 1987  [X]
Facet   section ZfN Section C  [X]
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1Author    I. Struve, B. Golle, U. LüttgeRequires cookie*
 Title    Sethoxydim-Uptake by Leaf Slices of Sethoxydim Resistant and Sensitive Grasses  
 Abstract    Leaf slices o f the sethoxydim sensitive grasses Poa pratensis and Festuca ovina and the sethoxy­ dim resistant grasses Poa annua and Festuca rubra take up the herbicide at similar rates. U ptake is alm ost linear with concentration up to 2 m M , independent o f light and little affected by tem pera­ ture betw een 0 and 25 °C. U ptake is highly pH sensitive. A t pH 7.0 rates o f uptake are only about 20% o f the rates observed at pH 3.5. Tim e course o f uptake suggests a rapid equilibration o f the com partm ents taking up the herbicide within 2 h. It is suggested that sethoxydim uptake by the grass-leaf tissue is a nonspecific process involving passive lipid diffusion and lipid equilibration of the non-dissociated weak acid sethoxydim (pK a = 4 .6). 
  Reference    Z. Naturforsch. 42c, 279 (1987); received August 6/N ovem ber 24 1986 
  Published    1987 
  Keywords    Sethoxydim, H erbicide, Lipid D iffusion, Poa annua, P oa pratensis 
  Similar Items    Find
 TEI-XML for    default:Reihe_C/42/ZNC-1987-42c-0279.pdf 
 Identifier    ZNC-1987-42c-0279 
 Volume    42