Welcome to my website where I gather information about plant pests and pathogens preying on gardens in my local area in Melbourne. I want to live in harmoney with nature and so I use exclusion techniques and natural predators to protect my edible and ornamental plants instead of using poisonous chemicals...................John Ashworth 27th July 2015.
Binomial name: Uromyces viciae-fabea var. viiae-fabae
I used to get rust on my broad beans, but last year I sprayed them with aerated compost tea, and escaped the usual infestation.
In our climate, rust starts to affect the leaves of our broad beans as the pods mature.
Why Broad Bean Rust is a pest.
Severe infestations will defoliate a broad bean plant leading to premature harvest, or even total loss of the crop.
The disease is caused by the fungus Uromyces viviae-fabae which is usually transmitted by air, water or insect vectors.
The fungal hyphae invade the plants structure and feed on nutrients in the plant. This leads to partial defoliation.
Fungal spores can overwinter in dead organic matter and the soil surrounding infected plants. It is not a good idea to add this material to your compost unless you can be sure the compost will generate enough heat to kill the fungi.
Last year I sprayed my broad beans and peas with aerated compost tea. For the first time in many years they were not attacked by broad bean rust.
Aerated compost tea contains beneficial nematodes and protozoa which are predators feeding on bacteria and fungi on the plant's stems and foliage.
Use a 4 year crop rotation which moves broad beans and peas to a new bed each year and deprives rust spores of their prey.
If you do get rust on your broad beans or peas, remove any infected leaves and destroyed them before the fungi spreads to the whole crop.