The objective of this mission was to make an evaluation of BLSD control in terms of fungicide use and in terms of efficiency and to propose new research strategies in order to improve BLSD control and to reduce costs and environmental impact of fungicide use. The fungicide efficiency has been better in the period 2008-2012. During this period strategies relied on regular applications mostly of contact fungicides. Also triazoles have been little used. After 2012, strategies have been characterized by three main evolutions : (i) an increase of the use of triazoles (6-8/year), (ii) an increase of fungicide use because most treatments were cocktails of fungicides (60-70 treatments/year); (iii) a reduction of the number of spray cycles per year due to longer periods between two cycles (30-44 cycles/year instead of 50). In the two last years fungicide efficiency has not increased : the number of fungicide treatment has increased although disease control has not increased (or decreased). It is then clear that the strategies of the last two years are not successful in terms of efficiency. By the other hand they were conducive to more fungicide use, higher costs and higher environmental impacts : up to 70 kg active ingredient/ha/year. However better efficiency had been already obtained with lesser fungicide use in passed years. Specific recommendations are made in terms of fungicide use and particularly invite BGA to discard the use of fungicide mixtures (cocktails) in order to reduce costs and fungicide efficiency. There is also a need for research of new strategies in order to reduce chemical use. Some proposals are made to BGA. These strategies would rely on enhancement of crop tolerance (agronomic practices in order to limit crop stresses, determination of harvest date through thermic sums, good deleafing practices in order to limit disease progression and disease effects on greenlife) and on experimentations of strategies with lesser fungicide use. Higher crop tolerance