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Micks Garden
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PostPosted: Wed Jul 05, 2017 8:18 pm    Post subject: Blight Reply with quote

I planted three batches of spuds this year in different areas (first time ever).
One lot in a raised bed got blight in about 50% of the plants, I'm going to dig the lot out tomorrow burn spuds and foliage.
Question : can I reuse the soil ? I had planned to grow root crops in it next year .
If i just leave it fallow for now , will it be ok for the spring .

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Sue Deacon
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PostPosted: Thu Jul 06, 2017 9:19 am    Post subject: Reply with quote

My understanding of blight is that it is limited to only members of the solanaceae family - potato, tomato, deadly nightshade etc.

You should be fine to grow any other crop in that soil next year. But make sure you remove ALL signs of potato from the soil.That can be very difficult. I built my new raised beds on top of the old ones. I am STILL getting potatoes appearing in amongst other crops 3 years after I grew them on that site. They are coming up through over two foot of soil - and I thought I had removed the lot.

As the blight thrives in warm, humid weather I am wondering if you deep-cultivate the soil, get out any trace of potato, leave the soil to dry out (fat chance, I know) then cover it with plastic so it's really dry and really warm. Then, next year, grow roots then legumes in the soil. It should be OK to start with taters again in three years?

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Micks Garden
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PostPosted: Thu Jul 06, 2017 4:47 pm    Post subject: Images Reply with quote

I have attached two images , is this blight or something else ?.
I was away for a week when I got back some of the spuds foliage has gone yellow. For blight I was expecting brown blotches.



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Sue Deacon
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PostPosted: Thu Jul 06, 2017 5:16 pm    Post subject: Reply with quote

That doesn't look like blight, more like a deficiency of some kind or too much/little water.
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tagwex
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PostPosted: Thu Jul 06, 2017 8:00 pm    Post subject: Reply with quote

Definitely not blight. Agree with Lady Fermanagh, a mineral deficiency.
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Sue Deacon
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PostPosted: Thu Jul 06, 2017 8:34 pm    Post subject: Reply with quote

Don't think it's magnesium deficiency (a common deficiency in many plants today) as the leaves would usually have darker green veins and edges. It looks like nitrogen deficiency. Have you used fertiliser? If so, what?

What do you think Tagwex. You've more experience of growing taters.

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tagwex
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PostPosted: Thu Jul 06, 2017 9:23 pm    Post subject: Reply with quote

A good dose of 7 6 17 should give a good crop. Bit late now though.
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Micks Garden
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PostPosted: Thu Jul 06, 2017 9:34 pm    Post subject: Hungry Spuds Reply with quote

Thanks Sue & Tagwex .
I mixed a lot of compost in to this bed before planting, seaweed and horse manure composted last autumn I thought that was sufficient .
I'm trying not to use chemical fertilizers so will need to plan next years crop a bit better .

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tagwex
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PostPosted: Thu Jul 06, 2017 9:40 pm    Post subject: Reply with quote

Two bags of fertiliser and I was sorted. Excellent looking crop. So far so good. Must put up a photo.
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Micks Garden
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PostPosted: Fri Jul 07, 2017 1:39 pm    Post subject: Diagnosis blackleg Reply with quote

Went to a Hort.. advisor he tells me its black leg.
I planted 9 varieties in small quantities in 3 beds .
Two varieties are infected .
Just to try as many spuds as possible I planted a few varieties purchased from the veg stall in Tesco, so I'm assuming my problems stem from there , next year it will be cert seeds only .
As for "the dose of 7 6 17" the rest are thriving on my home made compost Very Happy .

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tagwex
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PostPosted: Fri Jul 07, 2017 3:23 pm    Post subject: Reply with quote

Well if you had showed us a picture of the stem with its 'black leg' then you would have got the correct diagnosis as it is quite distinctive!!!

Here is a photo of my crop thriving on 7 6 17. The yellowed one shows a disease called Yellowspot.



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Its my field. Its my child. I nursed it. I nourished it. I saw to its every want. I dug the rocks out of it with my bare hands and I made a living thing of it!

This boy can really sing http://youtu.be/Dgv78D2duBE
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Sue Deacon
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PostPosted: Fri Jul 07, 2017 6:40 pm    Post subject: Reply with quote

You've a few chip butties there T! Very Happy
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tagwex
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PostPosted: Fri Jul 07, 2017 8:21 pm    Post subject: Reply with quote

Sooooo common!
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Its my field. Its my child. I nursed it. I nourished it. I saw to its every want. I dug the rocks out of it with my bare hands and I made a living thing of it!

This boy can really sing http://youtu.be/Dgv78D2duBE
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Micks Garden
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PostPosted: Fri Jul 07, 2017 9:55 pm    Post subject: Field a spuds Reply with quote

That's some field a spuds, you must be feeding the Army . Smile .
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tagwex
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PostPosted: Sat Jul 08, 2017 6:35 am    Post subject: Reply with quote

You would be surprised what you would get through in a year. I will be selling some too. Also I give them away to family members.
_________________
Its my field. Its my child. I nursed it. I nourished it. I saw to its every want. I dug the rocks out of it with my bare hands and I made a living thing of it!

This boy can really sing http://youtu.be/Dgv78D2duBE
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