blight (Rhizoctonia solani
Brown, irregular lesions develop on the entire plant. Plant may
wilt. Blighted leaves may mat together. Entire plants can be blighted and
killed. Tan to light brown hyphae (thread-like fungal growth) can be seen
between the soil and blighted foliage. Common on juvenile ivies and on adult
forms when overhead irrigation is used; predominant during hot, humid weather.
Disease development is rapid.
Use pathogen-free potting media, pots and plant material. Do not
over-water or over-fertilize plants. Remove infected plants to reduce spread of
the pathogen. Treat with PCNB (Terrachlor ), etridiazole ® + thiophanate-methyl
(Banrot ) or ® iprodione (Chipco 26019 ).