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#1
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Experiences please of effectiveness of Nematodes v Vine weevil killer
Been using Vine weevil killer all year, but now found lots of grubs
eating into roots of my potted plants. Checked on label of bottle and it says ... This Vine Weevil Killer is a systemic insecticide to protect plants grown in pots & containers from damage caused by vine weevils & reduce greenfly, blackfly & whitefly infestation. One application gives protection for up to 4 months against Vine Weevils & helps reduce Greenfly, Blackfly & Whitefly infestation for up to 6 weeks. Mix 30mls with 1 litre of water & use the resulting solution to drench the soil or compost. 1 litre of solution will treat 10 litres of compost. Does this mean that the treatment has to be via the roots only, and not via the leaves as per other systemic insecticides ??? Is the Nematodes more effective. Which is more cost effective, as I have lots of pots. Can I keep Nematodes somehow till next year. |
#2
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Experiences please of effectiveness of Nematodes v Vine weevil killer
"stevesmith" wrote in message ... Been using Vine weevil killer all year, but now found lots of grubs eating into roots of my potted plants. Checked on label of bottle and it says ... This Vine Weevil Killer is a systemic insecticide to protect plants grown in pots & containers from damage caused by vine weevils & reduce greenfly, blackfly & whitefly infestation. One application gives protection for up to 4 months against Vine Weevils & helps reduce Greenfly, Blackfly & Whitefly infestation for up to 6 weeks. Mix 30mls with 1 litre of water & use the resulting solution to drench the soil or compost. Does this mean that the treatment has to be via the roots only, and not via the leaves as per other systemic insecticides ??? Is the Nematodes more effective. Which is more cost effective, as I have lots of pots. Can I keep Nematodes somehow till next year. I've used both Provado and the Nematodes.I found the nematodes ineffective but that may have been my impatience. You can not store the nematodes for long periods. The Provado is used as a soil drench and you need to make a rough assessment of the volume of your pot and apply the appropriate volume direct to the soil. I believe there is a compost available that contains vine weevil killer which may work out more cost effective. Once you are free of the damned things grow a few primula in pots,treated with the killer,to act as a lure. |
#3
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Experiences please of effectiveness of Nematodes v Vine weevil killer
"Rupert (W.Yorkshire)" wrote in message ... "stevesmith" wrote in message ... Been using Vine weevil killer all year, but now found lots of grubs eating into roots of my potted plants. Checked on label of bottle and it says ... This Vine Weevil Killer is a systemic insecticide to protect plants grown in pots & containers from damage caused by vine weevils & reduce greenfly, blackfly & whitefly infestation. One application gives protection for up to 4 months against Vine Weevils & helps reduce Greenfly, Blackfly & Whitefly infestation for up to 6 weeks. Mix 30mls with 1 litre of water & use the resulting solution to drench the soil or compost. Does this mean that the treatment has to be via the roots only, and not via the leaves as per other systemic insecticides ??? Is the Nematodes more effective. Which is more cost effective, as I have lots of pots. Can I keep Nematodes somehow till next year. I've used both Provado and the Nematodes.I found the nematodes ineffective but that may have been my impatience. You can not store the nematodes for long periods. The Provado is used as a soil drench and you need to make a rough assessment of the volume of your pot and apply the appropriate volume direct to the soil. I believe there is a compost available that contains vine weevil killer which may work out more cost effective. Once you are free of the damned things grow a few primula in pots,treated with the killer,to act as a lure. If you are in cold parts then the bio control works well, down here it worked well during the summer but the winter was too cold for the control but not too cold for the vine weevils! so control was never better than 75%, then changed to provado but found that you needed to repeat 3 times per year to ensure control and it was slow to apply (yes you can buy ready mixed compost but it has a short shelf life) we now use Vi nil which is excellent but very expensive and I am not sure if it is available to gardeners. -- Charlie, gardening in Cornwall. http://www.roselandhouse.co.uk Holders of National Plant Collections of Clematis viticella (cvs) and Lapageria rosea |
#4
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Experiences please of effectiveness of Nematodes v Vine weevil killer
"Charlie Pridham" wrote in message ... "Rupert (W.Yorkshire)" wrote in message ... "stevesmith" wrote in message ... Been using Vine weevil killer all year, but now found lots of grubs eating into roots of my potted plants. Checked on label of bottle and it says ... This Vine Weevil Killer is a systemic insecticide to protect plants grown in pots & containers from damage caused by vine weevils & reduce greenfly, blackfly & whitefly infestation. One application gives protection for up to 4 months against Vine Weevils & helps reduce Greenfly, Blackfly & Whitefly infestation for up to 6 weeks. Mix 30mls with 1 litre of water & use the resulting solution to drench the soil or compost. Does this mean that the treatment has to be via the roots only, and not via the leaves as per other systemic insecticides ??? Is the Nematodes more effective. Which is more cost effective, as I have lots of pots. Can I keep Nematodes somehow till next year. I've used both Provado and the Nematodes.I found the nematodes ineffective but that may have been my impatience. You can not store the nematodes for long periods. The Provado is used as a soil drench and you need to make a rough assessment of the volume of your pot and apply the appropriate volume direct to the soil. I believe there is a compost available that contains vine weevil killer which may work out more cost effective. Once you are free of the damned things grow a few primula in pots,treated with the killer,to act as a lure. If you are in cold parts then the bio control works well, down here it worked well during the summer but the winter was too cold for the control but not too cold for the vine weevils! so control was never better than 75%, then changed to provado but found that you needed to repeat 3 times per year to ensure control and it was slow to apply (yes you can buy ready mixed compost but it has a short shelf life) we now use Vi nil which is excellent but very expensive and I am not sure if it is available to gardeners. -- Charlie, gardening in Cornwall. http://www.roselandhouse.co.uk Holders of National Plant Collections of Clematis viticella (cvs) and Lapageria rosea Useful data--thanks. Do you find that plants treated with provado also seem to have a resistance to other sap sucking blighters? I have been told that it does have a degree of control over Red spider mite if that is ever possible. |
#5
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Experiences please of effectiveness of Nematodes v Vine weevil killer
"Rupert (W.Yorkshire)" wrote in message ... "Charlie Pridham" wrote in message ... "Rupert (W.Yorkshire)" wrote in message ... "stevesmith" wrote in message ... Been using Vine weevil killer all year, but now found lots of grubs eating into roots of my potted plants. Checked on label of bottle and it says ... This Vine Weevil Killer is a systemic insecticide to protect plants grown in pots & containers from damage caused by vine weevils & reduce greenfly, blackfly & whitefly infestation. One application gives protection for up to 4 months against Vine Weevils & helps reduce Greenfly, Blackfly & Whitefly infestation for up to 6 weeks. Mix 30mls with 1 litre of water & use the resulting solution to drench the soil or compost. Does this mean that the treatment has to be via the roots only, and not via the leaves as per other systemic insecticides ??? Is the Nematodes more effective. Which is more cost effective, as I have lots of pots. Can I keep Nematodes somehow till next year. I've used both Provado and the Nematodes.I found the nematodes ineffective but that may have been my impatience. You can not store the nematodes for long periods. The Provado is used as a soil drench and you need to make a rough assessment of the volume of your pot and apply the appropriate volume direct to the soil. I believe there is a compost available that contains vine weevil killer which may work out more cost effective. Once you are free of the damned things grow a few primula in pots,treated with the killer,to act as a lure. If you are in cold parts then the bio control works well, down here it worked well during the summer but the winter was too cold for the control but not too cold for the vine weevils! so control was never better than 75%, then changed to provado but found that you needed to repeat 3 times per year to ensure control and it was slow to apply (yes you can buy ready mixed compost but it has a short shelf life) we now use Vi nil which is excellent but very expensive and I am not sure if it is available to gardeners. -- Charlie, gardening in Cornwall. http://www.roselandhouse.co.uk Holders of National Plant Collections of Clematis viticella (cvs) and Lapageria rosea Useful data--thanks. Do you find that plants treated with provado also seem to have a resistance to other sap sucking blighters? I have been told that it does have a degree of control over Red spider mite if that is ever possible. Certainly reduces white fly but has little effect on red spider, sadly it is lethal to bees even weeks after soaking the soil. -- Charlie, gardening in Cornwall. http://www.roselandhouse.co.uk Holders of National Plant Collections of Clematis viticella (cvs) and Lapageria rosea |
#6
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Experiences please of effectiveness of Nematodes v Vine weevil killer
Charlie Pridham wrote: Certainly reduces white fly but has little effect on red spider, sadly it is lethal to bees even weeks after soaking the soil. It contains imidacloprid. It says that it should be applied 'away from bees', and can be applied on 'edible plants'. For a plastic garden perhaps .... |
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