Leaf miners on pepper
Pepper, bell Bangalore India
What pesticides do you advise for Leafminers Lyriomyza ?
Posted
by: Rajendra Naidu
(2 points)
Posted: December 15, 2014
Answers
Leafminer larvae are virtually impervious to insecticides on edible crops. Remove and destroy affected leaves to help break the cycle. Yellow sticky traps can also help destroy adults. There is a parasitic wasp available for purchase, but it's very expensive and there's no guarantee they won't fly away.
Liriomyza rarely attacks spinach. You may also have Phytomyza. The control is the same.
Other than the spinach and the cabbage, the insects are doing no real damage. Severe leafminer outbreaks are often caused by excess use of insecticides, since they have numerous enemies that normally keep them well controlled. You may want to review what you are using and see if you can cut back or use other control methods for your crops.
If all else fails, Abemetin, CHLORANTRANILIPROLE, and Spinosad can be used in rotation. Abemectin has a preharvest interval of 7 days, and an REI of 12 hours, so it should be used with caution.
Liriomyza rarely attacks spinach. You may also have Phytomyza. The control is the same.
Other than the spinach and the cabbage, the insects are doing no real damage. Severe leafminer outbreaks are often caused by excess use of insecticides, since they have numerous enemies that normally keep them well controlled. You may want to review what you are using and see if you can cut back or use other control methods for your crops.
If all else fails, Abemetin, CHLORANTRANILIPROLE, and Spinosad can be used in rotation. Abemectin has a preharvest interval of 7 days, and an REI of 12 hours, so it should be used with caution.
Posted
by: Nicole Castle Brookus
(21 points)
Posted: December 20, 2014
Leaf miners are not usually threatening to plants, but control is often necessary to manage the highly visible tunnels in leaves that can reduce crop value.
Management:
Monitor plant leaves closely. At the first sign of tunneling, squeeze the leaf at the tunnel between two fingers to crush any larvae. Done soon enough, this killing larvae can allow plants to survive minor outbreaks. Pick off and destroy badly infested leaves in small gardens.
The more healthy the plant, the less chance that leafminers will hurt it. Maintain plant health with organic fertilizers and proper watering to allow plants to outgrow and tolerate pest damage. Keep your soil alive by using compost and other soil amendments.
Use yellow sticky traps to catch egg laying adults. Cover soil under infested plants with plastic mulches to prevent larvae from reaching the ground and pupating.
Organic neem oil will break the pests’ life-cycle by preventing larva from reaching maturity. Neem oil may also have repellent qualities and interfere with egg laying activities. (http://www.planetnatural.com/pest-pro...)
Leafminers ಸಾಮಾನ್ಯವಾಗಿ ಸಸ್ಯಗಳು ಬೆದರಿಕೆ ಇಲ್ಲ, ಆದರೆ ಬೆಳೆ ಮೌಲ್ಯವನ್ನು ಕಡಿಮೆಗೊಳಿಸುವ ಎಲೆಗಳಲ್ಲಿ ಕಾಣಬಹುದಾದ ಸುರಂಗಗಳು ನಿರ್ವಹಿಸಲು ಅಗತ್ಯ.
ನಿರ್ವಹಣೆ:
ಸುರಂಗ ಮಾರ್ಗ ಮೊದಲ ಸೈನ್ ನಲ್ಲಿ , ಮರಿಗಳು ಕೊಲ್ಲಲು ಎರಡು ಬೆರಳುಗಳ ನಡುವೆ ಸುರಂಗ ಒತ್ತಿ . ಮರಿಗಳು ಕೊಂದ ಸಸ್ಯಗಳು ಏಕಾಏಕಿ ಬದುಕಲು ಅವಕಾಶ ಮಾಡಬಹುದು .
ದೃಢವಾದ ಸಸ್ಯ ಕೀಟ ಕಡಿಮೆ ಮುತ್ತಿಕೊಳ್ಳುವಿಕೆಗೆ ಹೊಂದಿರುತ್ತದೆ. ಸಸ್ಯಗಳು ಮೀರಿ ಮತ್ತು ಕೀಟ ಹಾನಿ ಸಹಿಸುವುದಿಲ್ಲ ಅವಕಾಶ ಸಾವಯವ ಗೊಬ್ಬರ ಮತ್ತು ಸರಿಯಾದ ನೀರಿನ ಸಸ್ಯ ಆರೋಗ್ಯ ಕಾಪಾಡಿಕೊಳ್ಳಲು . ಕಾಂಪೋಸ್ಟ್ ಮತ್ತು ಇತರ ಮಣ್ಣಿನ ತಿದ್ದುಪಡಿಗಳನ್ನು ಬಳಸಿ.
ಮೊಟ್ಟೆ ಇಡುವುದು ವಯಸ್ಕರು ಹಿಡಿಯಲು ಹಳದಿ ಜಿಗುಟಾದ ಬಲೆಗಳು ಬಳಸಿ. ನೆಲವನ್ನು ತಲುಪುವ ಮತ್ತು pupating ಲಾರ್ವಾಗಳನ್ನು ತಡೆಯಲು ಪ್ಲಾಸ್ಟಿಕ್ ಮಲ್ಚಸ್ಗಳ ಬಳಸಿ.
ಸಾವಯವ ಬೇವು ತೈಲ, ಮುಕ್ತಾಯ ತಲುಪುವ ಲಾರ್ವಾ ತಡೆಯುವ ಮೂಲಕ ಕೀಟಗಳ 'ಜೀವಿತಾವಧಿಯ ಒಡೆಯುತ್ತವೆ. ಬೇವಿನ ಎಣ್ಣೆ ಸಹ ನಿವಾರಕ ಗುಣಗಳನ್ನು ಹೊಂದಿವೆ ಮತ್ತು ಮೊಟ್ಟೆ ಇಡುವುದು ಚಟುವಟಿಕೆಗಳನ್ನು ಕಡಿಮೆ ಮಾಡುತ್ತದೆ.
Management:
Monitor plant leaves closely. At the first sign of tunneling, squeeze the leaf at the tunnel between two fingers to crush any larvae. Done soon enough, this killing larvae can allow plants to survive minor outbreaks. Pick off and destroy badly infested leaves in small gardens.
The more healthy the plant, the less chance that leafminers will hurt it. Maintain plant health with organic fertilizers and proper watering to allow plants to outgrow and tolerate pest damage. Keep your soil alive by using compost and other soil amendments.
Use yellow sticky traps to catch egg laying adults. Cover soil under infested plants with plastic mulches to prevent larvae from reaching the ground and pupating.
Organic neem oil will break the pests’ life-cycle by preventing larva from reaching maturity. Neem oil may also have repellent qualities and interfere with egg laying activities. (http://www.planetnatural.com/pest-pro...)
Leafminers ಸಾಮಾನ್ಯವಾಗಿ ಸಸ್ಯಗಳು ಬೆದರಿಕೆ ಇಲ್ಲ, ಆದರೆ ಬೆಳೆ ಮೌಲ್ಯವನ್ನು ಕಡಿಮೆಗೊಳಿಸುವ ಎಲೆಗಳಲ್ಲಿ ಕಾಣಬಹುದಾದ ಸುರಂಗಗಳು ನಿರ್ವಹಿಸಲು ಅಗತ್ಯ.
ನಿರ್ವಹಣೆ:
ಸುರಂಗ ಮಾರ್ಗ ಮೊದಲ ಸೈನ್ ನಲ್ಲಿ , ಮರಿಗಳು ಕೊಲ್ಲಲು ಎರಡು ಬೆರಳುಗಳ ನಡುವೆ ಸುರಂಗ ಒತ್ತಿ . ಮರಿಗಳು ಕೊಂದ ಸಸ್ಯಗಳು ಏಕಾಏಕಿ ಬದುಕಲು ಅವಕಾಶ ಮಾಡಬಹುದು .
ದೃಢವಾದ ಸಸ್ಯ ಕೀಟ ಕಡಿಮೆ ಮುತ್ತಿಕೊಳ್ಳುವಿಕೆಗೆ ಹೊಂದಿರುತ್ತದೆ. ಸಸ್ಯಗಳು ಮೀರಿ ಮತ್ತು ಕೀಟ ಹಾನಿ ಸಹಿಸುವುದಿಲ್ಲ ಅವಕಾಶ ಸಾವಯವ ಗೊಬ್ಬರ ಮತ್ತು ಸರಿಯಾದ ನೀರಿನ ಸಸ್ಯ ಆರೋಗ್ಯ ಕಾಪಾಡಿಕೊಳ್ಳಲು . ಕಾಂಪೋಸ್ಟ್ ಮತ್ತು ಇತರ ಮಣ್ಣಿನ ತಿದ್ದುಪಡಿಗಳನ್ನು ಬಳಸಿ.
ಮೊಟ್ಟೆ ಇಡುವುದು ವಯಸ್ಕರು ಹಿಡಿಯಲು ಹಳದಿ ಜಿಗುಟಾದ ಬಲೆಗಳು ಬಳಸಿ. ನೆಲವನ್ನು ತಲುಪುವ ಮತ್ತು pupating ಲಾರ್ವಾಗಳನ್ನು ತಡೆಯಲು ಪ್ಲಾಸ್ಟಿಕ್ ಮಲ್ಚಸ್ಗಳ ಬಳಸಿ.
ಸಾವಯವ ಬೇವು ತೈಲ, ಮುಕ್ತಾಯ ತಲುಪುವ ಲಾರ್ವಾ ತಡೆಯುವ ಮೂಲಕ ಕೀಟಗಳ 'ಜೀವಿತಾವಧಿಯ ಒಡೆಯುತ್ತವೆ. ಬೇವಿನ ಎಣ್ಣೆ ಸಹ ನಿವಾರಕ ಗುಣಗಳನ್ನು ಹೊಂದಿವೆ ಮತ್ತು ಮೊಟ್ಟೆ ಇಡುವುದು ಚಟುವಟಿಕೆಗಳನ್ನು ಕಡಿಮೆ ಮಾಡುತ್ತದೆ.
Posted
by: Dr. Ravishankar Narayana
(15 points)
Posted: September 13, 2015
Can you please provide more details about the problem? How many plants do you have? Are you growing just a few peppers at home or do you have a whole field which you are growing commercially? Have you sprayed the plants with anything previously? Often leafminer outbreaks are caused by early applications of insecticides which kill of populations of natural enemies such as parasitoid wasps which allows the leafminer population to multiply to damaging levels. Please provide some more details, as well as some images if possible, and we will do our best to help.
Posted
by: Lindsay McMenemy
(4 points)
Posted: December 15, 2014
Rajendra Naidu commented,
I have a Terrace Garden where I grow the following vegetables :
Tamatoes, Brinjal, Bottle Gourd, Ridged Gourd, Biter gourd, Spinach, cabbage , cauliflower, green chillies , pepper Bells radish, beetroot .
Most of these are affected by Leafminers
These vegetables are grown in pots quite large ones and each pot has two to three plants. The pots are filled with Coco peet & manures used is Compost of household vegetable & garden foliage in addition I use horse manure . over 9 years ago.
I have a Terrace Garden where I grow the following vegetables :
Tamatoes, Brinjal, Bottle Gourd, Ridged Gourd, Biter gourd, Spinach, cabbage , cauliflower, green chillies , pepper Bells radish, beetroot .
Most of these are affected by Leafminers
These vegetables are grown in pots quite large ones and each pot has two to three plants. The pots are filled with Coco peet & manures used is Compost of household vegetable & garden foliage in addition I use horse manure . over 9 years ago.
Lindsay McMenemy commented,
Has there been any change in the productivity of your plants? Treatment may not be necessary if your plants are ok. The damage may be purely cosmetic, in which case you can ignore it. over 9 years ago.
Has there been any change in the productivity of your plants? Treatment may not be necessary if your plants are ok. The damage may be purely cosmetic, in which case you can ignore it. over 9 years ago.
Thanks Nicole
For your information I do not use any pesticide or insecticide in Terrace Garden.
For your information I do not use any pesticide or insecticide in Terrace Garden.
Posted
by: Rajendra Naidu
(1 point)
Posted: December 20, 2014
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