Return to the Hydroponics Forum | Post a Follow-Up

 o
Pepper leaves curling

Posted by urbangardenfarmer (My Page) on
Wed, Mar 24, 10 at 22:37

The new growth on my pepper plants are curling and twisting. I had a thrip problem a couple weeks ago, so I sprayed the leaves and drenched the soil with azamax. I'm wondering if the leaf problem is a result from the azamax, or the thrips? The Ph is 5.8 and the ppm is 600 or 1.6 EC.


Follow-Up Postings:

 o
RE: Pepper leaves curling

Azamax is based on Azadirachtin, right? But while Azadirachtin is effective against greenflys and aphids, it's rather ineffective (or not strong enough) against thrips. I've been using Azadirachtin based products on several occasions in various strengths and found pepper plants very tolerant for it. Furthermore (unfortunately) the symptoms you plants show are deadly sure the ones of heavy thrip activity.

What I am using against thrips you may ask? It's a self made "natural" insecticide based on black pepper, garlic, hot peppers, tobacco, some curare-like mashed lianes (contain a lighter neurotoxin) plus neem flower (azadirachtin), a few tomatoes, onions, molasses and EM to accelerate fermentation. Well yes, this brew needs to be manufactured in advance, as it needs to ferment for several weeks.

PS: recipe upon request.


 o
RE: Pepper leaves curling

lucas- almost sounds like a salsa recipe!

I need to look up thrips now, good luck with this urbangardenfarmer.


 o
RE: Pepper leaves curling

Lucas, please send the recipe. The thrips are practically gone, except for a couple here and there in the flowers. Do you think the plants can recover!? Do you think the plants have a virus or something like that from the thrips? I'm SO discouraged! You live and you learn I guess? Tomorrow I'm ordering beneficial pirate bugs and nematodes! This means WAR!


 o
RE: Pepper leaves curling

I haven't expressed that I am actually very sorry about what's going on there, urbangardenfarmer. But what can I say... Indeed thrips can be carrier of any pest, fungal infections or else. Viral infections (like mosaic) very feared, are actually more rare in fact. It's a bit like malaria: although mosquitos are the carrier, there must be an out brake in the neighborhood until they will be.

I lost hundreds of pepper plants per season with sometimes symptoms I couldn't fully diagnose myself and actually were diagnosed at the near pest control as being affected and infected by multiple pests, like thrips, fungal infection, etc.

What I can say about yours is that a fungal infection can also lead to some hormonal disorder that causes leaf deformation of that kind.

The key word with peppers is preventive care; inoculation with anti fungal fungus like trichoderma (sounds wired but is very effective) and prophylactic spraying with some "strong repellent - mild poison" as this recipe recommended in Thailand by local pest control:

50gr black pepper (powder or grind peppercorn)
50gr chili powder (hot)
50gr tomato paste
50gr tobacco (stalks, waste is just fine)
50 gr garlic
50gr onions
50gr neem (flower, coarsely ground, meal, whatever is available)
50gr onions
50gr molasses or brown sugar

50gr long pepper (if available) - if not a pinch more black pepper and chili

Preferably used: the adequate quantity of EM (effective microorganism)

Use cocktail mixer or food processor, etc to mince and mix all ingredients.
Put in a bucked and add 4-5 liter of water (1 -1/4gallon). Make up the EM solution and add to the mix. Let ferment anerobically (aerobically for a few days first) for at least 2-3 weeks. In case of immergency you can use it after 2 weeks, but better is to let it ferment for much longer, let's say 2-3 month.

Filter well and bottle.

Use 50-80 cc (milliliter) of the brew per 4.5 Liter of water for spraying.
50 cc for more frequent use, every 2-3 days and 80 cc for weekly treatment of affected plants. Important: use/add an "adjuvant" when spraying.

Prophylactic spraying every or only every 2 or 3 weeks (depending on season and climate, actual danger) , but be aware of the nicotine content. Plants may or may not fully metabolize.

PS: if you are afraid of TMC-virus, - simply sterilize the tobacco for 5 mins (adequate time before taking fire) in the micro wave!

Take all adequate and proper security measures necessary to every step of the procedure..Do I need an official disclaimer and add all possible health risks here, to exclude being charged or prosecuted in the US, by some random fool that cannot take responsibility for his/her own actions? I hope I don't! LOL


 o
RE: Pepper leaves curling

One more thing, to not exclude it. If some "oily" Azadirachtin based product is used (sprayed) excessively and/or repeatedly, it may also clog the leaf's pores and prevent proper transpiration. This could indeed be responsible for some leaf deformation. In fact these symptoms are sometimes observed (temporarily) with capsicum chinense, when they grow too rapidly and IN COMBINATION with heat stress. But I've seen these symptoms appearing without any excessive spraying of the sort.

What you can always do (if there is a suspicion of too much oily substance) is carefully "showering" the plants to somewhat clean out the product - and reduce light/heat, actually moving away the lights for some time. Do not stress the plants in any way when "sick". Take good care of- to not under- or over watering them, no heat no cold. Do not overdo or add random treatments at this state. In fact, basically treat them like some weakened patients first...

Best of luck!


 o
RE: Pepper leaves curling

Thanks lucas! That's a lot of useful information.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Hydroponics Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here