Onion harvest success against Downy Mildew and White Rot

How to beat 2 common Onion diseases: 1/ Buy the right Seed 2/ use Onion powder on the soil 1 year before growing. However it is possible to use old Garlic Steeped in water to perform the same job Terry King will show you how in this video :    • How Can I Get Rid Of White Rot From My Con...