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14 messages
13/07/2013 at 11:53

I know it is still quite early in the season but I am having the most successful season in the last 3 - but it is not withoutr it's problems.

I think I am suffering from a nitrogen deficiency, I have taken some photo's and would like some advice as whether I am right or wrong?

http://s4.gardenersworld.com/uploads/images/original/27354.jpg?width=899&height=350&mode=max

 

http://s4.gardenersworld.com/uploads/images/original/27355.jpg?width=856&height=350&mode=max

 

http://s4.gardenersworld.com/uploads/images/original/27356.jpg?width=856&height=350&mode=max

 I have fed them with Tomorite and trimmed of the worst off the brown leaves. The is the second time I have fed them and will increase that over the next fews days.

Am I on the right track?

13/07/2013 at 12:01

I thought from the first photo that they ooked scorched (wet leaves in sun), but the second photo looks more like tomato mosaic virus.

I don't think its nitrogen deficiency.

13/07/2013 at 14:02

My immediate thought was the same as yours Fidgetbones, and my second the same too

http://apps.rhs.org.uk/advicesearch/profile.aspx?PID=250 

14/07/2013 at 01:21

I don't like the sound of that, definitely not wet leaves in sun. Sounds like I need to clear out my greenhouse! All I have planted (this year) are grafted plants which are supposed to be disease resistant.

14/07/2013 at 08:57

SandLake, it's not a nitrogen deficiency. I'm not sure that it's TMV either. The best way to check for TMV is to look at the newer, younger leaves. It usually produces a mottled mixture of light and dark green on the leaf surface. Easy to see if it's present.

The fruit looks healthy too. TMV will affect the fruit.

Disease-resistance only means that a plant will, supposedly, last longer with the disease than a non-resistant plant. It doesn't mean a plant won't get the disease.

One other thing. Those small inner pots are very very small for an indeterminate variety. First thing I'd do would be to pot them up into at least a 25-30cm pot.

14/07/2013 at 15:04

http://s4.gardenersworld.com/uploads/images/original/27455.jpg?width=272&height=350&mode=max

 

http://s4.gardenersworld.com/uploads/images/original/27456.jpg?width=272&height=350&mode=max

 

http://s4.gardenersworld.com/uploads/images/original/27457.jpg?width=272&height=350&mode=max

Here are more detailed pics of the newer upper leaves, there is a bit of mottling but not a lot.

I am keen to heed any advice that is given but I am hesitant to re-pot the plants. They have been in the halos for 5-6 weeks now so there would be significant roots down into the growbags and also a significant plant growing up out of the halo - best way would be to cut into the halo but that would cause a lot of disruption to the plant. The growbags are a good size and I have only potted 2 plants per growbag. The halo I consider to be a small mound sticking up out of the growbag, watering is down into the growbag and feeding is into the halo. My ridge height is not very high so this year I used growbags to 'start' the plant at a lower level (I also dug a small trench to get the growbag even lower)

 

14/07/2013 at 15:09

http://s4.gardenersworld.com/uploads/images/original/27458.jpg?width=306&height=350&mode=max

 

http://s4.gardenersworld.com/uploads/images/original/27459.jpg?width=306&height=350&mode=max

 

http://s4.gardenersworld.com/uploads/images/original/27460.jpg?width=306&height=350&mode=max

 Those photo's might have been a bit large so here they are again

14/07/2013 at 18:32

it could be magnesium deficiancy. try a teaspoon of epsom salts around the roots and water in every few days. good luck.

14/07/2013 at 22:19

It can also be stress? Too much difference between heat through the day and at night. Mine have suffered as we are hitting 28 through the day and its pretty cool at night. I may be wrong though.

15/07/2013 at 07:56

Sandlake - re the pots. Fair enough, all I saw was the wee pots, didn't see the grow bags. Serves me right for not paying more attention. I'll have a close look at those leaf photos later.

15/07/2013 at 18:40

Can I throw my problem in too!? Generally my plants look pretty healthy but in recent days the newer growth has had a pronounced droop to it, lower leaves still very green and tough looking. It's been in the high 20s/early 30s here by day for the last week or so but it still seems unlikely it's lack of water? They're in 25 litre containers and I've been watering around every 3 days. I started feeding as of yesterday and gave the feed with a good soak - but hasn't helped the droop. 

Any thoughts greatly appreciated...

 

http://s4.gardenersworld.com/uploads/images/original/27549.jpg?width=360&height=350&mode=max

 

16/07/2013 at 14:18

Bf, the plant looks absolutely healthy. The weather is warm, it will droop a little. Don't be tempted to increase the watering. Out of interest, what does it look like after the sun goes down? In warm weather, you'll often find plants that droop a little during the day will perk up again after dark.

In fact, that's the best test for water requirements for toms in warm weather, particularly planted in the ground. Don't check them during the day. Check in the cool of the evening. If they're drooping in the cool of the evening, water. If not, don't.

16/07/2013 at 17:25

thanks italophile! This is definitely the best summer weather so far I've experienced for growing tomatoes so it makes me a bit uncertain... per my answer to your post on another thread, I think I have been underdoing the watering a little. last night, temps round here didn't get below 22C! 

17/07/2013 at 07:30

Bf, doesn't matter what the temperature is, the plant will tell you if it needs water. As I say, check them at night after the warmth of the day has passed.

My toms are all in the ground and we're getting temps in the 30sC every day with low-20sC overnight. I water deeply about every four days. Toms don't need pampering. They're very sturdy - tough, even - critters. Mollycoddle them and they won't produce at their best.

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