Factors affecting the performance of foliar-applied biocides

Taylor, F.E., 1979. Factors affecting the performance of foliar-applied biocides. PhD, Nottingham Trent University.

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Abstract

In the field the susceptibility of Chenonodium album L. to the post emergence herbicide Basagran is dependent on the prevailing weather conditions. Study on the influence of environmental conditions in governing the plant's response to the herbicide, revealed that pre- and post treatments of light, temperature and humidity greatly affect the susceptibility of C. album to Basagran.

Detailed studies, using T.L.C., G.L.C. and scanning electron microscopy, showed that the leaf surface of C . album is well endowed with wax platelets composed principally of long chained aldehydes. Differences in susceptibility of C. album observed as a result of changing environmental conditions could not be correlated with any change in the deposition, chemical composition, ultrastructure or wettability of the epicuticular wax.

The adaxial and abaxial leaf surface of C . album was, however, found to possess stomata bearing large antechambers which appeared virtually devoid of wax platelets. From in vitro studies these stomata were shown to open in the presence of Basagran in a light induced response over a temperature range of 9 - 29°C. The relevance of these findings is discussed in relation to the penetration of Basagran into C. album leaves.

Item Type:	Thesis
Creators:	Taylor, F.E.
Date:	1979
ISBN:	9781369326000
Identifiers:	Number Type PQ10290351 Other
Divisions:	Schools > School of Science and Technology
Record created by:	Linda Sullivan
Date Added:	13 Jul 2021 09:58
Last Modified:	24 Jul 2024 15:02
URI:	https://irep.ntu.ac.uk/id/eprint/43428

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