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#1
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Broad bean problems
Hi,
My family is growing broad beans in our veg. patch for the first time this year. Already they have suffered from bean weevil. I sprayed them with Sybol last week but today I saw a couple of weevils on some of the plants. I don't really like using insecticides and I couldn't find any info on which insecticide to use. The plants are flowering now so I can't use Sybol on them. Should I spray the plants with something else or will they be ok? Also today i noticed the leaves have what look like small black mites on them. I wondered if anyone knew how to tell if these are black aphids or not? They are only tiny, about 1mm in length so I am not sure if they are black aphids. Any help much appreciated, Sallyann |
#2
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Broad bean problems
"Sallyann" wrote in message ... : : Hi, : : My family is growing broad beans in our veg. patch for the first time : this year. : : Already they have suffered from bean weevil. I sprayed them with Sybol : last week but today I saw a couple of weevils on some of the plants. I : don't really like using insecticides and I couldn't find any info on : which insecticide to use. The plants are flowering now so I can't use : Sybol on them. : : Should I spray the plants with something else or will they be ok? : : Also today i noticed the leaves have what look like small black mites : on them. I wondered if anyone knew how to tell if these are black : aphids or not? They are only tiny, about 1mm in length so I am not sure : if they are black aphids. : : Any help much appreciated, : : Sallyann Possibly flea beetle. I would puff with Derris although be careful not to kill ANY LADYBIRDS AS THEY ARE GREAT FOR LOOKING AFTER THE GARDEN AND SEEM TO BE IN MASSIVE NUMBERS THIS YEAR oops sorry for caps www.rraa.moonfruit.com |
#3
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Broad bean problems
"Robert" wrote in message ... "Sallyann" wrote in message ... : : Hi, : : My family is growing broad beans in our veg. patch for the first time : this year. : : Already they have suffered from bean weevil. I sprayed them with Sybol : last week but today I saw a couple of weevils on some of the plants. I : don't really like using insecticides and I couldn't find any info on : which insecticide to use. The plants are flowering now so I can't use : Sybol on them. : : Should I spray the plants with something else or will they be ok? : : Also today i noticed the leaves have what look like small black mites : on them. I wondered if anyone knew how to tell if these are black : aphids or not? They are only tiny, about 1mm in length so I am not sure : if they are black aphids. : : Any help much appreciated, : : Sallyann Possibly flea beetle. I would puff with Derris although be careful not to kill ANY LADYBIRDS AS THEY ARE GREAT FOR LOOKING AFTER THE GARDEN AND SEEM TO BE IN MASSIVE NUMBERS THIS YEAR oops sorry for caps www.rraa.moonfruit.com Or ladybird larvae which look totaly unlike adults Picture on here - http://www.gardenorganic.org.uk/factsheets/gg12.php or lacewing larvae which consume around 10 times as many aphids as ladybirds Picture on here - http://www.greengardener.co.uk/aphidhedges.htm michael adams ... |
#4
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Thanks for the replies. I looked at the pictures and they were definitely not ladybird or lacewing larvae.
I didn't think they were big enough to be flea beetles but when i went to put some in jar to show my mum (who knows much more about gardening than me) they did jump like fleas! I will have a look on the internet this morning to try and find out if flea beetles do any harm. Thanks, Sallyann |
#5
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Broad bean problems
"Sallyann" wrote in message ... Thanks for the replies. I looked at the pictures and they were definitely not ladybird or lacewing larvae. I didn't think they were big enough to be flea beetles but when i went to put some in jar to show my mum (who knows much more about gardening than me) they did jump like fleas! I will have a look on the internet this morning to try and find out if flea beetles do any harm. Thanks, Sallyann The only time to worry is if they're doing postive damage to the plants. Flea beetles, and maybe their lavae, will eat small holes in the leaves. However most plants can stand a few holes in the leaves in any case. As they can the ocasional lump chewed from the edges by the odd weevil. If you were a subsistence farmer whose whole livelihood depended on growing a single field of beans then that might be different. And the presence of any such threat would a cause for immediate worry. In my experience black bean aphids are only a problem later in the year - when there are actually beans hanging on the vines and I often use a softish jet of water out of a pump sprayer to stun them rather than use dilute washing up liquid which will get in their eyes. Which can't be much fun for them. Whereas what ladybirds and other natural predators get up to, is none of my business. True. michael adams .... -- Sallyann |
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