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HOW TO AVOID BLIGHT MARE?

I have just finished doing my Christmas potato reveal. Out of the 9 containers in my smaller polytunnel, we only got a large handful of  usable potatoes. On closer inspection of the parent tubers, many had disintegrated into slimy sludge, gone rotton, or just gone. ( Attack of the 60 ft slugs) - a slight exaggeration, but what blight did'nt ransack, the slugs took the remainder of. 

My Polytunnels have adequate veneration, ie, the doors stay open unless hurricanes visit! Despite this, they are always dripping moisture. Which I know is a haven for blight visitation.

Everything in the other polytunnel is ticking away nicely, & it too drips moisture. Not having the room on the patio or elsewhere for raised beds to grow potatoes outside, undercover in large containers is my only option. I go through legions of salt to combat the slugs, but I fear moisture is my enemy more so, when it comes to the perpetrators of my failings. 

PLEASE DOES ANYBODY HAVE A SUGGESTION TO GET RID OF THE MOISTURE, SO I CAN GROW SOMETHING OTHER THAN SALAD CROPS & WATERCRESS ! Thanks.

Posts

  • fidgetbonesfidgetbones Derbyshire but with a Nottinghamshire postcode. Posts: 16,462

    Best way to avoid blight is to grow blight resistant varieties. Look for the Sarpo prefix. Most of the major seed merchants now have them.

    http://sarpo.co.uk/

    http://www.dtbrownseeds.co.uk/Potatoes-1/Potato-Sarpo-Kifli-Early-Maincrop-Seed-Potato.html#.WfmrqoZpG9Y

  • Allotment BoyAllotment Boy North London Posts: 5,826

    But do remember the Sarpo and other varieties are only RESISTANT not IMMUNE so they may still get some blight if conditions are really exacerbating it. Are you growing directly in the soil because after a couple of years you will need to change it- a big job.

    As for your condensation problem it is a bit drastic but you can get polytunnel covers where the bottom 1/3 is mesh not soild plastic. However this will mean it is much colder in cold weather unless you put another cover over the top in winter. If you have power you could try an electric fan suspended from the roof bars, there are models specifically for this. 

    AB Still learning

  • Pete.8Pete.8 Billericay, EssexPosts: 9,857

    Whilst the EU have banned Bordeaux Mixture, you can buy the 2 ingredients needed (from Amaz.. etc) and there's instructions how to mix it here-

    https://www.gardeningknowhow.com/garden-how-to/info/diy-bordeaux-fungicide.htm

    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
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