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#1
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Potatoes/cropping
Driving north past Invergordon the other day I noticed that a potato
field which was in full leaf last week is now devoid of leaf. The haulms have been cut off just above soil level. This prompts me to ask: 1. Why would this have been done 2. How does this affect the tubers beneath the soil (Does it stop them developing?) -- Cheers, Compo. |
#2
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michael adams wrote:
"compo" wrote in message ... Driving north past Invergordon the other day I noticed that a potato field which was in full leaf last week is now devoid of leaf. The haulms have been cut off just above soil level. This prompts me to ask: 1. Why would this have been done ... The haulms are removed before any possible infestation by blight which would then travel down to the tubers. Whether blight takes hold will be directly related to the amount of foliage there is, leaf and stalks etc for it to settle in. In combination with the localised humidity. ... 2. How does this affect the tubers beneath the soil (Does it stop them developing?) ... I presume you mean does it stop them increasing in size ? Whether it does or not, the growers will presumably make a calculation as to whethet they have more to gain by removing the haulms and all chances of the crop getting blight, than they're likely to lose from any continued bulking of the tubers by that stage. The other aspect of potato developemnt the thickening of the skin which is necessary for satisfactory storage has either already occured or is independent of the haulms. They will probably have this down to a fine art, and will take account of local weather conditions and forecasts - humidity especially, when deciding on the exact date. They may possibly have used sulphuric acid for this. There are plenty of references on Google regarding the specifics. Presumably this will also totally remove a possible host for the blight in the form of the removed haulms. michael adams Another reason is they are removed when the potatoes are the size the supermarket requires, they don't want them too large, customers complain! |
#3
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Thanks for the insight gang, I'm off out to remove the haulms from about
half of my crop to see if it makes a difference - although slugs as well as blight are a problem here in Caithness. -- Cheers, Compo - Nothing ventured, nothing failed. (Ian Dury) |
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