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Physico-chemical properties of different formulations of phenmedipham and different FAR (a) -combinations used in sugarbeet. Part III: spray retention, uptake of phenmedipham in the leaf and spreading on a leaf surface

Cannoodt, M.; Meheus, L.; Steurbaut, W.; Verstraeten, R.; Dejonckheere, W.

Mededelingen van de Faculteit Landbouwwetenschappen - Rijksuniversiteit Gent 57(3B): 1213-1222

1992


ISSN/ISBN: 0368-9697
Accession: 002457549

HPLC with detection used to determine the behaviour of spray on cucumber leaf and glass test surfaces showed that Betanal (phenmedipham) alone had the best spray retention followed by Betanal + Avadex (tri-allate) + Goltix (metamitron). In contrast, most or all of a Betanal + Tramat (ethofumesate) + Pyramin (chloridazon) mixture was washed off the surfaces. When a spray oil was added to phenmedipham, relatively more herbicide was found in the wax layer of Ficus elastica cv. Decora leaves than on the leaf surface. Best uptake of the herbicide into the leaf occurred with the surfactants Atplus 201 and Atplus 258. Spreadability of various phenmedipham emulsions on the leaves of various weed and crop plants was influenced more by the plant than by the herbicide formulation.

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