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I dont know if its because of the hot weather, but my raspberries are looking decidedly odd! My Joan Js are fruiting already, and the two summer ones (black jewel and a Glenn variety) look very autumnal, the leaves are various shades of red/yellow (like autumn leaves) - is this anything to worry about? I know raspberries tend to like cool and damp (hope I havent got that wrong!), so maybe its just too hot for them.
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I planted half a dozen each of Joan j and (I think) glen ample bare root canes in December in two rows next to each other. They've had manure over them. All the glen amples have leaves and fruit but 2 of the Joan j never leafed out (I assume they're dead) one leafed out nicely but then in the past few days all the leaves turned brown and it seems to be dead, the others look fine. Perhaps our unsettled weather is upsetting Joan j? I watered them and haven't done anything different to the dead ones as the live neighbours. -
Some of my Joan J have fruited before the Tulameen - I think the canes which have fruited are growing from the remains of last years canes (a couple grew from the just under where I pruned them back) rather than the new canes which have grown this year.
Some of the tulameen leaves are going yellow around the edge of the leaves but I haven't a clue what is causing it - I water (although this may be a bit irregular) but it could be the hot weather or nutrient s - there's been a massive spurt of growth this spring that something could be lacking
A google search suggests a lack of manganese or iron so I may give a little dose of something to the next water next time I can get to the plot.
New all singing all dancing blog - Jasons Jungle
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- I must be a Nutter,VC says so -Comment
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Thanks Jay-ell, what would you normally use in the water? Ive got some tomato feed in the shed, but should probably increase my food repertoire!Comment
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Not sure myself - I've some iron Sulphate I was thinking of trying or some miracle grow - but I need to check what trace nutrients that has.
New all singing all dancing blog - Jasons Jungle
�I have not failed 1,000 times. I have successfully discovered 1,000 ways to NOT make a light bulb."
― Thomas A. Edison
�Negative results are just what I want. They�re just as valuable to me as positive results. I can never find the thing that does the job best until I find the ones that don�t.�
― Thomas A. Edison
- I must be a Nutter,VC says so -Comment
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Poor pictures but may help, could be one of the others elelments on the left hand link
Iron Deficiency vs. Healthy Plant - Raspberry | Yara UK
Iron Deficiency vs. Healthy Plant - Raspberry | Yara UKComment
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Did anyone have any joy on correcting this issue
Have just applied 30ml of 5% Iron in 10l water to mine, unfortunatly forgot to leave one as a controlComment
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couple of standard suggestions copied from another web site :-
"Organic
Pelleted poultry manure gives a quick boost of nitrogen, while organic compost gives a longer-term solution. Add bonemeal if your raspberries are short of phosphorous. In general, if you've added plenty of well-rotted compost to the soil to improve moisture retention, drainage and soil structure, you're unlikely to have too many problems.
Chemical
Add sulphate of ammonia for nitrogen deficiency. Sulphate of potash cures potassium deficiency. For low phosphorous levels, apply super-phosphates. Top up manganese levels with iron chelate and use Epsom salts to tackle magnesium deficiency. "
If this is the first time you've had the symptoms, I'd guess that the soil has got dry - possibly worth laying down some soaker-hose between the canes to make watering easier.Comment
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Thanks Nick
I also came across the below, 3rd question, where T&M mention manganese too. So they have had Magnesium , Iron and Manganese along with blanket elements from miracle gro. Bit annoying as the less effected 50% of plants are growing fast
https://www.thompson-morgan.com/facebook-qa-1305Comment
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I think my problem was that they were last years canes, the black jewel is more or less gone. The other summer fruiting one has loads of nice healthy growth, but a couple of iffy, fruiting canes.Comment
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[QUOTE=It never rains..it pours;1543975]Thanks Nick
I also came across the below, 3rd question, where T&M mention manganese too. So they have had Magnesium , Iron and Manganese along with blanket elements from miracle gro. Bit annoying as the less effected 50% of plants are growing fast
Raspberries can get a virus which leads to yellowing of the leaves - don't want to panic you as its not common, but from what you've described it is an outside possibility - link to rhs page about it below.
https://www.rhs.org.uk/advice/profile?PID=752
Good luck - NickComment
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Bex, sorry to hear that, but you should get suckers from the healthy one to increase numbers next year
Thanks Nick, another worry for the folder. However the leaves dont look like that.........yet. Looked today and they are definatly better, less bad , the yellow intra vein on the leaves is now a light green. So think its either Iron, Magnesium or Manganese deficiency as thats what have applied lately. Having looked at various sites my money is on Magnesium deficiency and interestingly thats not in the miracle gro that they have been having during the season.
http://www.yara.co.uk/crop-nutrition...y---raspberry/Comment
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excellent - sounds like good news - some soils, particularly types of clay, lock up certain minerals and that makes it hard for the plants to access them. The long term fix is good compost, but short term straight chemicals can provide a useful remedy.Comment
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Thanks Nick
Yes it is clay soil. Im trying to improve it but only started this gyo game 18 months ago. Have horse manure from a relation along with my own grass, etc that am composting and digging in, however tricky to do on established things like the raspberries. So for now will just add small amount of epsom salts to the miracle gro.Comment
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No worries - no harm in spreading some manure/compost round/near the canes as a mulch. The worms will help by dragging a lot of it down in to the ground, as long as the soil is moist enough.Comment
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