my citurs infected with?

Discussion in 'Citrus' started by farmboy, Apr 1, 2007.

  1. farmboy

    farmboy Member

    Messages:
    10
    Likes Received:
    0
    Location:
    Philippines
  2. Millet

    Millet Well-Known Member 10 Years

    Messages:
    1,698
    Likes Received:
    5
    Location:
    Denver,Colorado USA
    Looks to be infected with citrus leaf miner. Although leaf miners make the tree unattractive, they do not do much damage to the tree. Leaf miners attack the new foliage. To control the insect, you would have to spray on a constant basis, every time the tree flushes new foliage. As your trees are small you could grow them in a screened inclosure, or simply do nothing. - Millet
     
  3. skeeterbug

    skeeterbug Active Member

    Messages:
    826
    Likes Received:
    10
    Location:
    Pensacola, USA
    Those are definitely leaf miners, they can be rough on small trees and they open the leaf to infection with disease. The citrus nurseries use a systemic pesticide, abemectin, on small non-bearing trees. It is sold under the trade name Admire and in "Bayer Tree and Shrub". For the typical homeowner and for mature bearing tree, there are 2 options--horticultural oil sprayed frequently (3-7 days), or the pesticide spinosad, which according to the lable, can only be sprayed 6 times each year. Spinosad has a relatively short half life of a few days.

    Skeet
     
  4. Millet

    Millet Well-Known Member 10 Years

    Messages:
    1,698
    Likes Received:
    5
    Location:
    Denver,Colorado USA
    Skeet, I doubt he will find any of those in the Philippines. Also in the first picture it looks like the tree has a trifoliate sprout growing. Must be from the root stock. - Millet
     
  5. farmboy

    farmboy Member

    Messages:
    10
    Likes Received:
    0
    Location:
    Philippines
    the only insecticide availble here in our city is " sevin 85" for the control of sucking and chewing insects of mangoes, fruit trees,rice, vegetables and other crops - would this help? ive used it 3 days ago . thanks mucho Skeet and Millet
     
  6. Millet

    Millet Well-Known Member 10 Years

    Messages:
    1,698
    Likes Received:
    5
    Location:
    Denver,Colorado USA
    Farmboy, unfortunately Seven will not work, because the leaf miner is protected by being in the middle of the leaf. As your tree is just a small seedling, you can trace to the end of the miner's leaf tunnel, there you will locate the insect, and crush it between you finger, provided it has not already departed. In the Philippines, it is going to be a never ending battle against leaf miners, every time your tree flushes new growth. - Millet
     
  7. skeeterbug

    skeeterbug Active Member

    Messages:
    826
    Likes Received:
    10
    Location:
    Pensacola, USA
    Just a thought, but maybe Millet can answer-- will vegetable oil work as a substitute--maybe mixed with a soap solution to help emulsify the oil? The horticultural oil works on miners by deterring the adult moths from laying eggs since they do not like to lay eggs on an oily leaf. Anyway farmboy, you might want to give it a try-- just mix an ounce or 2 of vegetable oil with a tablespoon or 2 of liquid soap in a gallon of water.

    This mix will help kill many pest-- scale, mites, white flies, and caterpillars-- it will not kill the miner larvae, but may keep the adults from laying on the new flushes.

    Skeet
     
  8. farmboy

    farmboy Member

    Messages:
    10
    Likes Received:
    0
    Location:
    Philippines
    thanks a lot Skeet and to evrybody!! L be back in month and post new pics of my beloved mandarin orange plant.....hope it would be a good site.
     

Share This Page