|
Brassica virus?
I've got summer broccoli, miniature kohlrabi[1] and miniature Savoys,
all of which are showing mottled yellow patches on some leaves on some plants. The patches bear no apparent relationship to water droplets or anything else, and the affected plants have an indefinable air of being under the weather. Could this be a virus, or is it some deficiency I could do something about? Watering with dilute seaweed extract didn't significantly cheer them up. I've just worked out that my cherished sugar peas are dying because of root rot, so I'm about to water them all (soil/roots only) with Bordeaux mixture just to show willing :-(( regards sarah [1] Never grown kohlrabi before, never eaten them. But the miniatures are terribly sweet (as in cute). -- NB. Note change of *usenet* email address: 'amitiel.demon.do.uk' will soon cease to function. My other email address will remain valid. Think of it as evolution in action :-) |
Brassica virus?
"sarah" wrote in message . .. : I've got summer broccoli, miniature kohlrabi[1] and miniature Savoys, : all of which are showing mottled yellow patches on some leaves on some : plants. The patches bear no apparent relationship to water droplets or : anything else, and the affected plants have an indefinable air of being : under the weather. Could this be a virus, or is it some deficiency I : could do something about? Watering with dilute seaweed extract didn't : significantly cheer them up. Are you sure they don't have cabbage root fly or club root disease? If they are like that and all 'floppy' I would say it's either one of those |
Brassica virus?
Robert wrote:
"sarah" wrote in message . .. : I've got summer broccoli, miniature kohlrabi[1] and miniature Savoys, : all of which are showing mottled yellow patches on some leaves on some : plants. The patches bear no apparent relationship to water droplets or : anything else, and the affected plants have an indefinable air of being : under the weather. Could this be a virus, or is it some deficiency I : could do something about? Watering with dilute seaweed extract didn't : significantly cheer them up. Are you sure they don't have cabbage root fly or club root disease? If they are like that and all 'floppy' I would say it's either one of those No, they're not floppy -- it's just the leaves are discoloured and the plants aren't as vigorous as the others. I haven't seen club root yet, and touch wood I won't; I grow all my brassicas from seed. regards sarah -- NB. Note change of *usenet* email address: 'amitiel.demon.do.uk' will soon cease to function. My other email address will remain valid. Think of it as evolution in action :-) |
Brassica virus?
Rod wrote:
On Thu, 15 Jul 2004 18:45:00 +0100, (sarah) wrote: I've got summer broccoli, miniature kohlrabi[1] and miniature Savoys, all of which are showing mottled yellow patches on some leaves on some plants. The patches bear no apparent relationship to water droplets or anything else, and the affected plants have an indefinable air of being under the weather. Could this be a virus, or is it some deficiency I could do something about? Watering with dilute seaweed extract didn't significantly cheer them up. These patches usually appear after attack by grey cabbage aphids and is worse after periods of stress - like hot dry weather. I believe they are symptoms of a virus but given good growing conditions they can grow out of it to some extent. The grey aphids are worse in hot dry conditions. If you start your plants under glass, that's when the aphids get going so get your plants outside and hardened off a bit quicker next time. Keep an eye on those young plants and hit the aphids with a soap type insecticide as soon as you see any signs. Thanks, Rod, that makes sense. I haven't got glass, but there are a lot of grey aphids on the brassicas anyway; I'm in East Anglia, and despite the grey days we've not had that much rain and the lawn is still brown. I've been watering the vegetables daily, but perhaps not enough. regards sarah -- NB. Note change of *usenet* email address: 'amitiel.demon.do.uk' will soon cease to function. My other email address will remain valid. Think of it as evolution in action :-) |
Brassica virus?
"sarah" wrote in message . .. : I've got summer broccoli, miniature kohlrabi[1] and miniature Savoys, : all of which are showing mottled yellow patches on some leaves on some : plants. The patches bear no apparent relationship to water droplets or : anything else, and the affected plants have an indefinable air of being : under the weather. Could this be a virus, or is it some deficiency I : could do something about? Watering with dilute seaweed extract didn't : significantly cheer them up. Are you sure they don't have cabbage root fly or club root disease? If they are like that and all 'floppy' I would say it's either one of those |
Brassica virus?
Robert wrote:
"sarah" wrote in message . .. : I've got summer broccoli, miniature kohlrabi[1] and miniature Savoys, : all of which are showing mottled yellow patches on some leaves on some : plants. The patches bear no apparent relationship to water droplets or : anything else, and the affected plants have an indefinable air of being : under the weather. Could this be a virus, or is it some deficiency I : could do something about? Watering with dilute seaweed extract didn't : significantly cheer them up. Are you sure they don't have cabbage root fly or club root disease? If they are like that and all 'floppy' I would say it's either one of those No, they're not floppy -- it's just the leaves are discoloured and the plants aren't as vigorous as the others. I haven't seen club root yet, and touch wood I won't; I grow all my brassicas from seed. regards sarah -- NB. Note change of *usenet* email address: 'amitiel.demon.do.uk' will soon cease to function. My other email address will remain valid. Think of it as evolution in action :-) |
Brassica virus?
Rod wrote:
On Thu, 15 Jul 2004 18:45:00 +0100, (sarah) wrote: I've got summer broccoli, miniature kohlrabi[1] and miniature Savoys, all of which are showing mottled yellow patches on some leaves on some plants. The patches bear no apparent relationship to water droplets or anything else, and the affected plants have an indefinable air of being under the weather. Could this be a virus, or is it some deficiency I could do something about? Watering with dilute seaweed extract didn't significantly cheer them up. These patches usually appear after attack by grey cabbage aphids and is worse after periods of stress - like hot dry weather. I believe they are symptoms of a virus but given good growing conditions they can grow out of it to some extent. The grey aphids are worse in hot dry conditions. If you start your plants under glass, that's when the aphids get going so get your plants outside and hardened off a bit quicker next time. Keep an eye on those young plants and hit the aphids with a soap type insecticide as soon as you see any signs. Thanks, Rod, that makes sense. I haven't got glass, but there are a lot of grey aphids on the brassicas anyway; I'm in East Anglia, and despite the grey days we've not had that much rain and the lawn is still brown. I've been watering the vegetables daily, but perhaps not enough. regards sarah -- NB. Note change of *usenet* email address: 'amitiel.demon.do.uk' will soon cease to function. My other email address will remain valid. Think of it as evolution in action :-) |
| All times are GMT +1. The time now is 08:29 AM. |
Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
GardenBanter