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Thread: Yellowing Leaves

  1. #25
    Never Knows Best gill_za's Avatar
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    Update:
    A couple of things I have noticed.

    First: The experiment was repeated with two controls and two treated trays. The kill rate is very high but not 100%. There seem to be several types of worms. Some move in wavy-whole-body motions just like nematodes (all were paralyzed and died), others are moving in circles on the bottom of the tray without visibly flexing the bodies (Some of these survived). And I have found three others which look almost like flat worms. I am not claiming that they are trematodes just comparing. These are white and are 4 mm long, 0.5 mm thick (survived but seemed to be dying). They generally move slower then the rest. So I have a freaking zoo... Any way I added a cocktail of imidocloprid and pyrethryn to all treated trays after 48 hours and they should all be dead by now.

    Second: The bugs definately came from one (possibly two) pots I purchased at a local store which gets them from flytrapfarm.com. Now I'm not saying that bugs originated at flytrapfarm.com, the store itself could have introduced them. But at the store pots were on the shelves and nowhere near the ground. So there...
    How I have found this out? Simple: I have several seedlings pots isolated from the rest for a while (3 months) and used my own planting media and seeds. These pots had nothing visibly alive in them!

    Anyway it seems to be working pretty well so, I have a pot with healthy young flytraps in them and will try soaking the soil with dewormer medicine to see if they will survive it.
    Last edited by gill_za; 05-25-2011 at 11:22 AM.

  2. #26
    LeafKirby's Avatar
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    I heard that the nematodes will eventually start to attack all sorts of bugs.

  3. #27
    Never Knows Best gill_za's Avatar
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    Quote Originally Posted by WaterKirby View Post
    I heard that the nematodes will eventually start to attack all sorts of bugs.
    That would be great but If these are plant nematodes I doubt they will. I wanted to introduce predatory nematodes specifically for that reason but if you read previous comments from GrowinOld poisons work better

  4. #28
    Not Growing Up! GrowinOld's Avatar
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    Hey Gill...
    We haven't seen how the plants are now doing since the transplanting
    on the 14th. Did things go successfully?
    I am guessing that the plants may have put up a leaf or two since then,
    and am wondering if they are greening up better than they were before,
    or if the yellowing edges continues.

    When they make some growth, post up another pic or two.
    I am hoping that the "bug" situation was the source of the problem,
    lest a search for another cause be in order.

    While my VFT's have done a lot better for me in the greenhouse & outdoors, I simply have yet to find the "sweet spot" indoors for them. Many of my young seedling Sarrs have actually done better indoors under lights, but that is because I can control the light & temps, forcing them to grow & not having to follow the "seasons" indoors. They color up before the others, and grow very well.
    When I get the time, I hope to work out what is best for the VFT's also, but for now I am making the most of the sunlight el'natural.

    I noticed you mentioned the "kill off" experiment working out for the most part. Any thoughts (unless I overlooked & missed it) on any effects these chemicals may be having on the plants themselves, or is it too early to tell perhaps?

    Well, keep us posted! Still interested in seeing you get the upper hand on this!



    I do use so called safe & "natural" controls also, for the greenhouse & garden/yard alike. For example, I still use milky-spore/disease bacteria on my lawn for japanese beetle infestation, however after years of use I am still uncertain of its effectiveness.
    I have found that the pyrethrin based insecticides have provided better, more instantaneous results in "bug control". They are natural organic compounds that actually have a pretty potent insecticidal activity.

    For those that are interested...
    They break down on exposure to light or oxygen, oxidize to become inactivated, & so are non-persistent & biodegradable & so are rather very safe when compared to some of the stronger insecticides that used to be sold.
    Pyrethrins are contained in the seed cases of the perennial plant pyrethrum (Chrysanthemum cinerariaefolium), & is considered one of the safest of all insecticides for use in food plants and is even approved for use around foodstuffs. I have read that all pyrethrins are easily hydrolyzed and degraded by stomach acids in mammals, so toxicity following ingestion by pets is very low. However, pyrethrins are dangerous for fish. (Toxicity is usually associated with applying much more of the product than directed. So care should be taken to observe direction labels when using this substance around humans and animals.)
    Experience is the best teacher. At least it used to be.
    But then, common sense isn't so common anymore, is it.


    http://www.terraforums.com/forums/sh...d.php?t=113866

  5. #29
    Never Knows Best gill_za's Avatar
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    Hi,

    Sorry for the late reply. I meant to put an update but kept postponing.

    Both plants are doing ok. They keep cranking out smaller traps though. The yellowing/browning of the leaves seems to have stopped. Surprisingly one of the plants (that seems the smallest of the two) produced a flower stalk which is about 3" in height now. I'm going to cut it off today as I don't want to overstress the plant with flowering.

    Regarding the pests. I have not seen them in the water from the replanted VFT's yet. But just yesterday I top watered my S. purpurea and watched a million of the little 1-2mm thinner than hair worms wash out. They prefer to swim in water and don't go to the bottom of the tray. I also saw one larger one about 4mm worm that moves on the bottom of the tray and does not move/look like the rest of them. Very prominent, easily noticeable. Surprisingly the Sarracenia is doing well and keeps producing new pitchers steadily. So I don't know what is going on here.

    Update to the treatment that I tried:
    After about 4 days from the initial treatment small hair-thin worms were dead in both treated containers and were alive (although reduced) in both untreated containers. I saw the larger worm (described previously) in the treated container. So the treatment worked on the small nematodes and didn't on the rest of the occupants.
    I have yet to try the chemical on the live plant, and will probably do it over this weekend.
    So far I was trying it on the water that washed off from the bottom of the pots (adding solution with chemical directly to water with worms).


    So after all this I'm starting to suspect that these worms were not the reason for my plants' problems. I have also started to suspect that it had something to do with the plastic pots they were in. These pots I bought in a dollar store and I remember that they smelled kinda funny. Additionally I have three other plants (non CP) in the same pots and they are not doing well at all, while one of the similar plants in a clay pot growing like crazy. So, something could be leaching from the plastic killing the plants. Oh well, just a theory. I will continue the de-wormer experiment still because it seems to work.

    Additionally I have contemplated "infesting" the pots with nematodes with Utricularia sandersonii to control the pests. Even if the worms are not the problem here I still don't want them in my plants!!!!

    On the good note this thought me not to keep all plants in one tray. Now infested and non-infested pots are separated from each other, and all the media used for planting gets a mandatory 24hr 1% Peroxide soaking treatment during the initial rinsing

    Pictures will be here a bit later (this evening most likely),

  6. #30
    Never Knows Best gill_za's Avatar
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    Pictures of the first plant:


    20110604_004.jpg by gillza, on Flickr


    20110604_005.jpg by gillza, on Flickr


    20110604_003.jpg by gillza, on Flickr

    The plant had a flower stalk which was cut right after the pictures were taken. The leaves with brown spots are remnants of pre-repotting era

    Pictures of a second plant:


    20110604_006.jpg by gillza, on Flickr


    20110604_007.jpg by gillza, on Flickr


    20110604_008.jpg by gillza, on Flickr

    This plant also had a flower stalk which I noticed during picture taking session.

  7. #31
    GregNY's Avatar
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    Nice job you seem to be on the right track for recovery.

    With so many new traps seeming to develop I think I'd cut away those that are yellow, browning, dying just to be done with them...

  8. #32
    Never Knows Best gill_za's Avatar
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    Quote Originally Posted by GregNY View Post
    Nice job you seem to be on the right track for recovery.

    With so many new traps seeming to develop I think I'd cut away those that are yellow, browning, dying just to be done with them...
    Thank you Cut them off after the photoshoot

    As I have mentioned previously I have set up the poison_nematodes_with_dewormer experiment and chose a pot with bunch of young VFT that were separated from the initial plant when I bought it. This plant shows no signs of illness but does have nematodes in the soil (as confirmed by multiple observation of the water coming from the pot after top watering). Since I already know that this chemical works on the nematodes, the purpose of this experiment is to check the effect this chemical has on the plants, particularly on VFTs.

    Experiment Date: 04Jun2011


    The sacrificial plants:


    20110604_021.jpg by gillza, on Flickr

    The poison:


    20110604_016.jpg by gillza, on Flickr

    Active ingredients:

    I looked up the info on this drug. It works by paralyzing the nematodes.


    20110604_023.jpg by gillza, on Flickr

    Solution:

    One tablet dissolved in 100mL of DI water.


    20110604_017.jpg by gillza, on Flickr

    The entire solution was used to top water the plant. Runoff water is collected and kept in the tray with the pot.

    Updates to follow
    Last edited by gill_za; 06-05-2011 at 05:47 PM.

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