Fusarium wilt (Fusarium oxysporum f. sp. spinaciae)
It is a wilt that is caused by a fungus. Plants can be affected any time after the three-leaf stage. Foliage loses its green luster, gradually wilts and turns yellow, beginning with the oldest leaves. The fungus is soil-borne and seed-borne. It commonly occurs where temperatures are fairly high. It can live in the soil indefinitely and rotation is not effective in its control.
- Use resistant varieties where available.
- Use certified disease-free seeds.