Allotments 4 All

Produce => Edible Plants => Topic started by: contessa on March 16, 2005, 20:45:11

Title: Carrot Root Fly
Post by: contessa on March 16, 2005, 20:45:11
Hi I'm Contessa,

I am a new member and am taking this oportunity to ask anyone out there if they have ever tried Thompson & Morgans Carrot Fly Away F1 Hybrid. I have just paid £2.89 for 500 seeds, I usually grow my carrots under fleece until the end of June, this solves the carrot fly problem that is rife in my area of Lancashire, I thought I would give these carrots a try but with so few seeds in the packet I will have to suppliment with my favourate Early Nantes. I am always a bit sceptical with all the claims the seed companies make
but it would solve a big problem for me. I am also going to try a trick I read on Allotments 4 all by putting Jeyes Fluid on strings across the carrot bed.

Looking forward to hearing from someone.
Title: Re: Carrot Root Fly
Post by: fred on March 16, 2005, 20:51:24
Welcome

I believe they are less attractive to carrot root fly and not a complete solution

You could try companion planting Rosemary as this puts them off or construct a low level mesh around the growing area as they fly low to the ground

Hope this helps
Title: Re: Carrot Root Fly
Post by: Lady of the Land on March 16, 2005, 20:58:08
I used flyaway from Kings Seeds in 2003 and did not have any problems with carrot root fly. However the seeds were planted inbetween garlic which I expect helped as well. Last year Autumn King used and lots of problems with carrot root fly, seeds not planted inbetween garlic. This year I am going to use fleece.

How many carrots are you planning on growing ! I would have thought 500 was Ok. I always sow my carrot seed individually, they are a reasonable size to pick up and it avoids thinning which encourages carrot root fly.

I might also add I have only had an allotment for 2 years so am learning and experimenting myself. There are agreat number of experts that may be able to advise both of us.

Good luck with your carrots this year.
Title: Re: Carrot Root Fly
Post by: chrispea27 on March 17, 2005, 07:01:20
Hello

I have always had trouble wth germination and then the fight with the fly. Will fleece keep the devils out or do you need the envirnmetal sheet >:(?
Title: Re: Carrot Root Fly
Post by: moonbells on March 17, 2005, 09:25:35
MY method of growing carrots is to use a spade or something to form a narrow v-shaped trench. This I fill with compost, water it in, top up with a bit more, water again then thinly sow carrot seed on top, covering with a final bit of compost. This gives me straight carrots in my otherwise stony soil, and they germinate very easily.

I also covered mine last year with enviromesh, but you can also surround the carrot bed with tall stakes (I think >2' high) and wind some fleece or old net curtain around them: the female carrot flies are low flying and so can't get past the side barrier, and the top is open to rain and sunlight so the plants can grow well.

Also meshing them stops other pests: our lottie foxes love digging newly planted carrot beds for some reason!

moonbells

Title: Re: Carrot Root Fly
Post by: ALAN HOWELL on March 17, 2005, 11:51:34
Just sow your carrots(I use Autumn King),cover e'm with fleece and leave them covered until you wanna eat some of them,if you'r dead keen you could remove the fleece a couple of times thru the season and do some weeding,but put the fleece back after,we get super carrots and no fly this way......Alan
Title: Re: Carrot Root Fly
Post by: SpeedyMango on March 17, 2005, 13:30:53
I shall try the companion planting with garlic this year I think. I was looking at my garlic bed the other day and wondering whether I could fill up the gaps with something. I'll probably add a mesh barrier around the bed when I do, and try to space out the seeds a bit more - I definitely suffered from more carrot fly last year after I started thinning.
Title: Re: Carrot Root Fly
Post by: Slugger on March 17, 2005, 15:32:23
Hi. Like you I am fairly new to this and am trying the fly resistant carrots this year. I did ask the same question a while ago, and got similar answers.

I am also concerned about the flavour - it may be useful to feedback when the carrots are ready for cropping! :P
Title: Re: Carrot Root Fly
Post by: Mark /\ on March 20, 2005, 19:19:51
I read somewhere if you pick your carrots or thin them

do it in the evening as the carrot fly don't seem to be about then.

Does anybody know if this is true.
Title: Re: Carrot Root Fly
Post by: redimp on March 20, 2005, 19:57:33
Quote from: moonbells on March 17, 2005, 09:25:35
MY method of growing carrots is to use a spade or something to form a narrow v-shaped trench. This I fill with compost, water it in, top up with a bit more, water again then thinly sow carrot seed on top, covering with a final bit of compost. This gives me straight carrots in my otherwise stony soil, and they germinate very easily.

I also covered mine last year with enviromesh, but you can also surround the carrot bed with tall stakes (I think >2' high) and wind some fleece or old net curtain around them: the female carrot flies are low flying and so can't get past the side barrier, and the top is open to rain and sunlight so the plants can grow well.

Also meshing them stops other pests: our lottie foxes love digging newly planted carrot beds for some reason!

moonbells



What compost do you use.  I thought carrots did not like fresh compost adding but I have stony soil and I like to sound of what you do.
Title: Re: Carrot Root Fly
Post by: tim on March 20, 2005, 20:07:50
Alan - you've said it all - if you've got it, use it!

But the 'resistant' varieties are quite acceptable.
Title: Re: Carrot Root Fly
Post by: kitty on March 20, 2005, 20:22:51
ok..probably a really daft question-but when you put the fleece over the carrots(as opposed to making a 'wall' of fleece..do you lay it flat or 'cloche' it with wire hoopy things?
if it s the first way dont the carrots mind their leaves being squashed? ???
sorry to sound so dim-i'm just about to plant some!
well...not RIGHT now-uts 8.30 p.m......i'm not THAT keen!! ;D
kitty
Title: Re: Carrot Root Fly
Post by: gavin on March 20, 2005, 20:59:14
Hi Contessa - hate to say it, but if there's a lot of hungry carrot fly around, and not enough carrots to go round, then they'll go for the Flyaway too :(.

Cover with fleece - my old plot was quite exposed, so fleece on its own flapped;  I'd use hoops to lift the fleece off the plants.

All best - Gavin
Title: Re: Carrot Root Fly
Post by: wardy on March 20, 2005, 21:18:35
I didn't have any hoops when I last grew carrots.  I just put fleece over ground where I'd sowed the carrot seed and the carrots grew under it.  Obviously it was loose enough to "grow" with the carrots.  I just weighed the edges of the fleece down with lengths of wood and bricks
Title: Re: Carrot Root Fly
Post by: moonbells on March 20, 2005, 23:05:44
Quote from: redclanger on March 20, 2005, 19:57:33

What compost do you use.  I thought carrots did not like fresh compost adding but I have stony soil and I like to sound of what you do.

I read that too, but figured that since I have the stony soil from hell and the odd shaped carrots to match, if the compost caused forking I'd hardly notice...

As it was, I got perfectly straight large carrots from both flyaway and autumn king.  So I'm doing it again, with el cheapo compost from the local garden centre.  Not even sieved.  Planted first row for this year on Friday under a cloche.  :)

(as a nice postscript to the first experiment, I now have a bed that has a lot of compost worked into it and a huge boost in worm numbers!)

moonbells
Title: Re: Carrot Root Fly
Post by: Charlotte Sometimes on March 21, 2005, 11:17:34
I grew Flyaway last year, completely uncovered.  Last year was my first season veg growing and I never got as far as getting any protection on them (apart from chicken-wire to keep the cats out).  They were absolutely fine - no fly.  Very tasty carrot, too.  I am supposing there are plenty of varieties superior in taste, but they were better than supermarket ones by a long way.

This year I am doing raised beds and enviromesh so they will be covered anyhow.  I'll be making a carrot bed using 50% coir, 25% bought compost, 25% top soil.  Our soil is stony, so we did have a few forked last year.  I ate them anyway.  ;D   This year, with any luck all bases covered and a bumper crop. My only gripe about last year was that I didn't have enough!
Title: Re: Carrot Root Fly
Post by: PREMTAL on May 01, 2005, 04:11:36
Hi Contessa,
What I do is this, two days before thining out I put a peeled Garlic clove in a one pint spray bottle.

then when I thin out I spray the row at ground level, this is quite effective in warding off the dreaded Carrot Fly.

After the first thining it is best to do this every two or three days, tedious but effective.

                                                      PREMTAL
Title: Re: Carrot Root Fly
Post by: legless on May 01, 2005, 07:59:50
where do carrot fly come from? i was wondering if i would get them if i grew some carrots in a bucket in my yard (built up area with the sea 100 yars away) i don't know where they'd come from but i bet they would. like deep sea vent creatures probably.....
Title: Re: Carrot Root Fly
Post by: wardy on May 01, 2005, 10:44:37
Premtal    I'll try that garlic spray on the carrots (mine not shown themselves yet though) I use it on my roses and clematis but had not thought of it for carrots.   :)
Title: Re: Carrot Root Fly
Post by: gavin on May 02, 2005, 01:30:42
Quotewhere do carrot fly come from?
If you're on the east coast, carrot fly come from Siberia; if you're on the west coast, they come from Ireland or N America.   ;D ;D ;D

All best - Gavin

(PS - by God, my carrots had better come right this year after all the attentiion they've had!)
Title: Re: Carrot Root Fly
Post by: David R on May 02, 2005, 10:09:44
Grew flyaway last year, uncovered, no garlic, nada - no fly either.

This year I am trying resistafly (wilko's) to see if its as good.

Apparently these carrots (the resistant types) lack an essential enzyme which the fly larvae require. You will still get the adult fly laying eggs, but as soon as the maggots hatch and start chomping, they run out of this enzyme and pop their clogs.

Title: Re: Carrot Root Fly
Post by: Plottie on May 02, 2005, 12:36:03
One thing that puzzles me about the growing of carrots...........what do the carrot farmers do to avoid the dreaded fly?  They can't be covering up acres of fields with fleece or surrounding the fields with little bariiers can they?? ??? ???

Plottie

ps I've Nantes Early planted under fleece and looking fine so far, though i'm not sure I'd recognise a carrot fly  :-\
Title: Re: Carrot Root Fly
Post by: tim on May 02, 2005, 13:19:29
Answer - they spray 5? times. Better than apples at 13 times?
Title: Re: Carrot Root Fly
Post by: wardy on May 02, 2005, 18:47:26
Carrot farmer in Lincs sprays 7 times  :(
Title: Re: Carrot Root Fly
Post by: diver on May 02, 2005, 19:24:11
I've planted my carrots in large containers which are sitting on top of my compost bin....this is made from 4 large pallets with a flat top and is about 3 ft off the ground....the carrot containers add another foot so I'm hoping I won't have carrot fly....but one of the old guys on the lottie told me today that carrot fly have wings and if they want your carrots they will fly up for them. I think I will fleece them just in case.
Title: Re: Carrot Root Fly
Post by: redimp on May 02, 2005, 20:18:11
I will contact my organic box supplier (also Lincolnshire) and see how he does it.  Bet he doesn't spray 5-7 times.
Title: Re: Carrot Root Fly
Post by: gavin on May 02, 2005, 21:04:48
For plottie - nope, no fleece.  Just spray, spray and spray again.  With some of the nastiest stuff around?

http://www.ruralni.gov.uk/crops/vegetables/technical_information/crfly.htm

Yuk - I don't buy carrots any more.  [edit]Ooops posts crossed - except organic ones![/edit]

All best - Gavin
Title: Re: Carrot Root Fly
Post by: Wicker on May 02, 2005, 22:48:18
Gavin, hope this isn't nit-picking (or fly-picking!) but as that link is to an American site maybe better to mention that our 2  Fly periods are usually June and again in August (the link says earlier)  :-*

For me it's wooden frame, enviromesh, leaving covered start to finish  and little or no weeding/thinning ...........
Title: Re: Carrot Root Fly
Post by: carrot-cruncher on May 03, 2005, 00:06:51
Last year I interplanted my carrots & 'snips with onions & leeks & had no problems with the blasted fly, something I plan on repeating this year, coupled with a fleece barrier

I'm also incorporating a suggestion from one of the old timers up the plot.   He takes toilet roll inners & cuts them in two then squashes them into an oval shape.   He then sows two seeds per inner, when the seedlings appear he then plants the whole lot in a trench in his plot.

He says the cardboard shell acts as a barrier against the fly & also removes the problem of thinning (& therefore wasting seeds).

CC
Title: Re: Carrot Root Fly
Post by: westsussexlottie on May 03, 2005, 08:40:48
Apparently carrot fly can smell carrots from 4 miles away....
Title: Re: Carrot Root Fly
Post by: Rox on May 04, 2005, 20:51:10
Quote from: legless on May 01, 2005, 07:59:50
where do carrot fly come from? i was wondering if i would get them if i grew some carrots in a bucket in my yard (built up area with the sea 100 yars away) i don't know where they'd come from but i bet they would. like deep sea vent creatures probably.....

Hi Premtal,

do you crush the garlic as well, or only peel it? sounds like a great idea - may use it on other plants to kill-deter aphids?   
Title: Re: Carrot Root Fly
Post by: PREMTAL on May 05, 2005, 04:21:42
Hi Rox,
           Leave them whole otherwise it will clog up the spray gun, the odour of the clove will transfer itself to the water very quickly. ( a sniff inside the bottle will be enough to convince you)

                                                 PREMTAL
Title: Re: Carrot Root Fly
Post by: tim on May 05, 2005, 10:20:23
Interplanting can muck up your rotation?
Title: Re: Carrot Root Fly
Post by: westsussexlottie on May 05, 2005, 10:25:32
So lets say I plant some parmex carrots in a tub of compost (no manure) in the garden and put it high up (on top of my tortoise house) - will they get carrot root fly?  Or other problems? Answers please!
Title: Re: Carrot Root Fly
Post by: Vegemite on June 20, 2007, 18:49:29
errrm, just pulled up lots of baby carrots and i did have some carrot fly but only on two carrots! strange!
Title: Re: Carrot Root Fly
Post by: cornykev on June 20, 2007, 19:30:25
I've got some eggs on the carrots Veg but the 30 or so carrots I've pulled so far are OK, I thought when I was reading through the posts I don't know some of these people then I realised it was 2005.  ;D ;D ;D
Title: Re: Carrot Root Fly
Post by: Vegemite on June 20, 2007, 22:30:16
hi yup sorry I searched for carrot fly was really looking for my "carrot experiment" thread- where wise man tim told me I was encouraging carrot fly lol! the one Ipulled up I knew from on here had the carrot fly- apart from the obvious little grey flea looking things at the top of the root, the base of the green foilage was red and the root (carrot bit) itself  was a "size zero" (unlike me!) and pale.      important thing is all the lovely other ones i pulled up were smashing in a slowcooker with lamb shank and new nicola potatoes from the garden this morning.

BTW tim if you read this- the batch that had the two with carrot fly weren't they ones I thinned in my experiment... and.... the ones I replanted have taken and are growing well! madness! maybe my antipodean enthusiasm is having a strange effect on my veggies. 8)