The Accidental Smallholder Forum

Growing => Vegetables => Topic started by: suziequeue on July 07, 2011, 08:29:37 pm

Title: Magnesium deficiency in potatoes
Post by: suziequeue on July 07, 2011, 08:29:37 pm

Our potatoes have got small black spots in their leaves.

Dr Hessayon's book suggests it's magnesium deficiency and suggests a trace element spray and feeding with a fertilizer that contains magnesium as well as nitrogen, phosphates and potash.

Can anybody recommend an over the counter spray and a suitable fertilizer?

Or anybody with any alternative diagnoses?

Title: Re: Magnesium deficiency in potatoes
Post by: Plantoid on July 08, 2011, 10:44:48 pm

Buy a box of crystalized magnesiun sulphate based feed  .....Mr Bowers range I seem to think then feed the ground & water it in .