PS II Compound Groups Today

Evidently, from these data, the most important groups of chemistry in PS II inhibitors in the 1980s, i.e., triazines and, to a large extent, ureas will not be used anymore in the European Union, with some very small exceptions (Table 10.7). 

Whereas photosynthesis inhibitors belonged in 1980 to the most important herbicide classes [38] the market situation changed, especially in Europe, at beginning of the 1980s through, especially, the introduction of new cereal, corn and oil seed rape herbicides from other herbicide classes but also through the reregistration process in Europe up to now. 

The value of PSII inhibitors sold in the EU declined from ca. 745 Mio Euro in 1995 to only ca. 441 Mio Euro in 2004, i.e., by minus ca. 40%. At the same time, the value of the total herbicide market in the EU increased from ca. 1.600 Mio Euro to ca. 2.000 Mio Euro, i.e., by plus 25%. Thus, the value share of PSII inhibitors in the total EU herbicide market decreased from ca 45% in 1995 to only 22% in 2004. 

Out of a total number of 50 PSII inhibitors, sales could only be recorded in the EU for some 40 compounds. Although the total number of PSII herbicides where sales could be recorded in the EU has only slightly declined from some 40 compounds in 1995 to about 36 compounds in 2004, only ten compounds have yet been included into Annex I as per end of 2005, while the future of a total number of slightly more than 30 PSII compounds still on sale in Europe is unclear or their life has come to an end, for one of the following reasons  

The substance has not even being notified, i.e., no dossier has been submitted (4 compounds where sales could be recorded). 

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