We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Quantitativer Biotest zur Bestimmung von Photosynthesehemmern im Boden.
- Authors
Pestemer, W.
- Abstract
A bioassay procedure for the quantitative determination of photosynthetic inhibitors in soil samples, hydroponic and staple fibres is described in detail. Garden cress (<em>Lepidium sativum</em> L.) has proved very suitable as test plant. Monolinuron and methabenzthiazuron were used to demonstrate the capability of the method for estimating herbicidal activity and plant availability, and for monitoring the total residues of herbicides in different soils. The method was found capable of assaying quantitatively concentrations as low as 0,04 ppm monolinuron. Photosynthetic inhibitors did not affect germination or seedling growth during the first 5 days after sowing; retardation of growth occurred only after food reserves in the endosperm were consumed. Therefore the content of food reserves in the cress seeds was determined in a dark-germination test and substracted from all yield results to give the dry matter yield under herbicide stress.
- Subjects
BIOLOGICAL assay; LEPIDIUM; HERBICIDES; SPRAYING &; dusting residues in agriculture; PESTICIDE content of soils; SOIL testing
- Publication
Weed Research, 1976, Vol 16, Issue 6, p357
- ISSN
0043-1737
- Publication type
Article
- DOI
10.1111/j.1365-3180.1976.tb00426.x