< tilbage 22-03-2024 - 17:07

Rhizoctonia Crown Rot of begonia.

Plant pathogen Rhizoctonia solani is often found attacking small plants, causing root rot, stem rot, and damping off of young and/or stressed plants in moist to wet soil. Stems often rot at the soil line and plants collapse and die. A fine webbing of fungal growth may be seen between the infected stems and nearby soil particles. Foliage may develop small dark brown, or black lesions that expand overtime to blight infected tissue.

Plants affected by Rhizoctonia solani wilt and break over at the soil. This problem is often severe when cuttings are placed in beds for rooting. Fungicides or biological control based on Trichoderma sp. may be used as a drench. Use cuttings from healthy plants only.