Key Points
- In turf ryegrass, yield was significantly increased by all fungicide treatments even though there were very low levels of disease
- The highest yielding treatment (2740 kg/ha) had the highest gross margin and was achieved with three applications of Allegro at 0.5l/ha
- Both the two spray programmes of triazole strobilurin mixtures, and the three spray programmes using triazole and combinations of triazole and strobilurin, gave similar yields in turf ryegrass
- In the forage ryegrass, yield responses to fungicides were not as large and no programmes significantly increased yield over the control
- In this season, with low disease pressure, a two spray programme of triazole plus strobilurin or a single spray of triazole + strobilurin + MBC gave the best economic benefits.
- The actual product used was not as important as having a planned fungicide programme