Seed treatment for onions

In the cultivation of onions, seed and soil-borne fungi can cause germination and emergence problems. Immediately after sowing, fungi on or in the vicinity of the seeds come to life. For onions, these major fungi are treated with Apron® XL and Maxim® 480FS. Both FarMore® Technology seed treatment products ensure that the germinating seed develops into a strong plant: the basis for a good onion yield.

Onion diseases

ASPERGILLUS SPP. – black mould | The disease Aspergillus niger is common in onions. Aspergillus causes unsightly, powdery black mould on and between the scales. In severe cases, the entire scale surface can turn black. Secondary bacterial organisms usually contribute to the symptoms of soft rot ...

BOTRYTIS SPP. – neck rot | The disease Botrytis aclada is common in onions. Neck rot can be identified by the mildew on the dying leaves, but this may appear also on any cuts in the bulbs. The disease can survive for two years in the soil, producing spores in the spring. The disease develops most rapidly at a temperature of 15°C and ...

FUSARIUM SPP. – fusarium wilt | The diseases Fusarium culmorum & Fusarium oxysporum are common in onions. Characteristic of fusarium wilt are wilting and total root rot. A pinkish mildew may also be visible. The disease may be seed, wind or soil-borne and ...

PYTHIUM SPP. – root rot | The disease Pythium spp. is common in onions. Pythium is a secondary parasite which particularly affects young plants. The disease is first visible at the roots, which turn blackish brown and show signs of rotting. Thick-walled resting spores develop in the diseased tissue which ...

RHIZOCTONIA SPP. – damping off | The disease Rhizoctonia solani is common in onions. High humidity will intensify damping off. The disease can be identified at an early stage by leaf spots just above the ground and in the middle of the outer leaves. These lesions can prevent or impede further crop growth. At a high ...