Rising alternaria pressure in potatoes: why smart combinations are key this season

Once regarded as a late-season issue, Alternaria now appears earlier in the growing cycle. The disease – easily recognized by its brown spots with concentric rings – is spreading more aggressively due to several factors. Stricter nitrogen application rules make it harder for plants to produce fresh foliage after infection, while newer potato varieties often show less tolerance compared to the classic Bintje.

Early intervention makes the difference

Starting control strategies in mid-July, before visible symptoms fully develop, has proven to be the most effective approach. Preventive spraying programs are increasingly seen as essential in reducing yield losses.

The role of Aphasol in integrated crop management

This is also the ideal moment to include Aphasol, our biostimulant, in the tank mix. Fully compatible with crop protection products, Aphasol is best applied preventively – just like Alternaria control itself.

By strengthening the plant’s physiological resilience, Aphasol supports a faster and more effective stress response. This makes it a valuable tool in seasons marked by fluctuating weather, heat, and rainfall peaks.

Smarter strategies for healthier potatoes

Integrated crop management means thinking beyond crop protection alone. By combining preventive disease control with plant resilience support, growers can safeguard both plant health and yield.

👉 Add Aphasol to your tank mix this season – and give your potatoes the extra boost they need to stay ahead of Alternaria.