Mode of Action and Selectivity

The fungi are classified broadly into the lower fungi, collectively known as Phycomycetes, and the higher fungi, described by the classes Ascomy-cetes, Deuteromycetes and Basidiomycetes. The classification is indistinct some taxonomists argue that the Phycomycetes are not true fungi. 

The Oomycetes, a class within the Phycomycetes, is unusual and regarded by many as being distinct from the true fungi. The taxonomic 

Fungicides are selective through their placement on the target crop, because they inhibit biochemical pathways that are absent or less sensitive to the applied compound in higher plants or because they are metabolically fragile in less sensitive organisms. 

Several biochemical processes have been validated as targets for fungicide activity. They include the direct and precise inhibition of biosynthetic sequences  

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Sparks, T.C., New insect control agents modes of action and selectivity (http //www.regional.org. au/au/esa/2001/03/0304sparks.htm print=l), 2001. 

Classification of sympathomimetics by mode of action and selectivity for adrenoceptors... 

For further reading on the neurochemistry of arthropods, see Treheme (1966), and for insect biochemistry see Rees (1977), Rockstein (1978), Wilkinson (1976), and Hutson and Roberts (1982). For the various methods available for insect pest management, see Metcalf and Luckman (1982) for mode of action and selectivity, see Beeman (1982) and Coats (1983). The following handbooks give the composition of all insecticides Worthing (1983), and Entomological Society of America (1981). 

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