Large Brown Brittle areas on Bean Plant Leaves

Hi All,

I'm wondering if anyone could help with an increasing problem i've recently incurred.

So i headed down to my lotty to check on my beans (french bean plants) i have around 30 of them and i've noticed a brown crust on the leaves. I have checked about on the internet and i suspect it could be bean rust, but what i can't figure out is that bean rust is associated with colder, damp temps, and you get a rusty coloured small clusters appear on the underside of the plant.

As for my leaves, they have huge brown patches which are brittle to the touch with slight yellow discolouration on the top of the leaves. Everything including the veins look fine.. Now more then half my plants are in one form or another in different stages of discolouration and brittleness.

Would treating the plants with any anti fungal help? Or does this sounds like something in the soil.

Help please, as these plants did yield plenty of bean which did not have any signs of infection either, but it seems like the production of beans on the infected plant has declined.

Thanks in advance

That's an interesting idea that hadn't passed my mind, but i think this has been an on going problem for a little while now, i've clipped off all the leaves that seem to be showing signs of the yellowing first, which i'm hoping will slow down the movement of whatever it is. I've also planted tomato plants down the centre of the row to act as a wind breaker.. i guess i've have to take samples of the leaves to the garden centre and see what they say...but thank you for your reply, maybe you could plant in something of significant size near your beans to break the wind too? best of luck thought