Lettuce help needed - Aquaponic Gardening2024-03-29T14:51:57Zhttps://aquaponicgardening.ning.com/forum/topics/lettuce-help-needed?commentId=4778851%3AComment%3A261954&feed=yes&xn_auth=noI'm having the exact same iss…tag:aquaponicgardening.ning.com,2012-01-21:4778851:Comment:2815312012-01-21T21:05:49.338ZCory Cramerhttps://aquaponicgardening.ning.com/profile/CoryCramer
<p>I'm having the exact same issue with a butter crunch variety, and briefly with a Romain, but that seems to have taken care of itself. I don't think heat was an issue with mine. They are in a cool room and I'm only using T12s. I do have knats too, but I'm thinking humidity and/or air circulation could be the main issue. Thanks for posting.</p>
<p>I'm having the exact same issue with a butter crunch variety, and briefly with a Romain, but that seems to have taken care of itself. I don't think heat was an issue with mine. They are in a cool room and I'm only using T12s. I do have knats too, but I'm thinking humidity and/or air circulation could be the main issue. Thanks for posting.</p> I have seen this before in hy…tag:aquaponicgardening.ning.com,2012-01-21:4778851:Comment:2813412012-01-21T20:44:05.195ZDavid R. Russellhttps://aquaponicgardening.ning.com/profile/DavidRRussell
<p>I have seen this before in hydroponic lettuces with bibb/boston/butter and with romaine before. Known as tip burn. Causes are warm/hot temperatures with poor air circulation resulting transpiration not being adequate. Air circulation and transpiration are needed for cooling and for allowing nutrient uptake for growth. The lack of adequate transpiration can manifest itself similar to a nutrient deficiency. Low calcium can also be associated with tip burn in lettuces. Can also be caused…</p>
<p>I have seen this before in hydroponic lettuces with bibb/boston/butter and with romaine before. Known as tip burn. Causes are warm/hot temperatures with poor air circulation resulting transpiration not being adequate. Air circulation and transpiration are needed for cooling and for allowing nutrient uptake for growth. The lack of adequate transpiration can manifest itself similar to a nutrient deficiency. Low calcium can also be associated with tip burn in lettuces. Can also be caused by electroconductivity being too high on warmer days (the plants shut down transpiraton due to too much nutrient uptake with the high rate of transpiration that occurs with warm temps). This is why hydroponic producers will lower Electroconductivity or nutrient strength in summer months. I doubt that nutrient strength is an issue. I assume problem is from too much heat and poor air circulation and possibly humidity related (higher transpiration with dryer air. less with very humid air. </p> I think you're right Vlad. T…tag:aquaponicgardening.ning.com,2011-12-11:4778851:Comment:2640552011-12-11T16:43:52.523ZSteve Robinsonhttps://aquaponicgardening.ning.com/profile/SteveRobinson
<p>I think you're right Vlad. The lettuce is putting on lots of new growth and I'm not seeing any further damage! I'm encouraged and really appreciate everyone's help! </p>
<p>I think you're right Vlad. The lettuce is putting on lots of new growth and I'm not seeing any further damage! I'm encouraged and really appreciate everyone's help! </p> I'm apt to think that it was…tag:aquaponicgardening.ning.com,2011-12-09:4778851:Comment:2634632011-12-09T14:50:29.413ZVlad Jovanovichttps://aquaponicgardening.ning.com/profile/VladJovanovic
<p>I'm apt to think that it was a combination of lights WAY to close, coupled with no ventilation, and that some of the more fragile outer leaves (which aren't at the top of the roots water distribution list anyways) couldn't replace water as fast as they were losing it. It sure would be cool if that were the end of it.</p>
<p>BTW...if you do ever end up using that oil mixture, use it sparingly as a little goes a long way and you want as little as is possible to get into your water. (And try…</p>
<p>I'm apt to think that it was a combination of lights WAY to close, coupled with no ventilation, and that some of the more fragile outer leaves (which aren't at the top of the roots water distribution list anyways) couldn't replace water as fast as they were losing it. It sure would be cool if that were the end of it.</p>
<p>BTW...if you do ever end up using that oil mixture, use it sparingly as a little goes a long way and you want as little as is possible to get into your water. (And try not to use any products containing Neem Tree oil, as that particular oil seems to be <em>toxic</em> to the fish). TCLynx listed some pretty wise general guidelines for using oil/soap products in aquaponics in another discussion, you may have seen it...</p>
<p>Anyways... <i> hopefully</i> you will never have to worry about such things...</p> I will definitely have to mix…tag:aquaponicgardening.ning.com,2011-12-09:4778851:Comment:2634572011-12-09T13:45:05.831ZSteve Robinsonhttps://aquaponicgardening.ning.com/profile/SteveRobinson
I will definitely have to mix up some of that in anticipation! Not sure what the problem was but I don't see any further damage. Maybe wishful thinking on my part. Lol! Crossing my fingers!
I will definitely have to mix up some of that in anticipation! Not sure what the problem was but I don't see any further damage. Maybe wishful thinking on my part. Lol! Crossing my fingers! Yeah they're pretty tiny. I'm…tag:aquaponicgardening.ning.com,2011-12-09:4778851:Comment:2634142011-12-09T01:37:59.020ZVlad Jovanovichttps://aquaponicgardening.ning.com/profile/VladJovanovic
<p>Yeah they're pretty tiny. I'm positive the wilting had nothing to do with mites, just wanted to give you a 'heads up' since they are so damn prevalent when growing indoors and heated. They seem like one of those thing that a person is bound to run into eventually. I lost one my hot pepper plants to 'em last week. Well, sort of on purpose as I was using the plant as a kind of 'control group', spraying it with plain water (no oils). It appears that water actually helps a bit but not nearly…</p>
<p>Yeah they're pretty tiny. I'm positive the wilting had nothing to do with mites, just wanted to give you a 'heads up' since they are so damn prevalent when growing indoors and heated. They seem like one of those thing that a person is bound to run into eventually. I lost one my hot pepper plants to 'em last week. Well, sort of on purpose as I was using the plant as a kind of 'control group', spraying it with plain water (no oils). It appears that water actually helps a bit but not nearly enough. I dont think the mites enjoy the humidity. The plant got pretty weak really quickly, and all of the leaves fell of all at once. All that was left were yellow and green spicy Feferones hanging there, looking kind of like Charlie Browns christmas tree...The other three Spanish hybrid peppers that were infested seemed to have cleared up rather well and are going strong. You can actually watch the spider mites fall off the leaves in a tiny spiraling death throe in like a minute after being sprayed with the oil mixture...</p> More great advise Vlad. Thank…tag:aquaponicgardening.ning.com,2011-12-08:4778851:Comment:2628822011-12-08T17:28:30.413ZSteve Robinsonhttps://aquaponicgardening.ning.com/profile/SteveRobinson
More great advise Vlad. Thanks! I've put out a cider vinegar trap but haven't seen any more insects. I've looked carefully over several of the wilted plants and see no sign of mites. But, these old eyes aren't as good as they were in the past! :)
More great advise Vlad. Thanks! I've put out a cider vinegar trap but haven't seen any more insects. I've looked carefully over several of the wilted plants and see no sign of mites. But, these old eyes aren't as good as they were in the past! :) They certainly look healthy t…tag:aquaponicgardening.ning.com,2011-12-08:4778851:Comment:2629382011-12-08T00:33:20.746ZVlad Jovanovichttps://aquaponicgardening.ning.com/profile/VladJovanovic
<p>They certainly look healthy too. Not brown and gunked up at all.</p>
<p>Yep sticky traps or the old the old apple cider vinegar (or wine) in a glass trick. Just put plastic wrap over the glass (secure with a rubber band) and poke a couple of pin holes in the plastic wrap. The gnats get in but wont get out.</p>
<p>Be on the look out for spider mites...a MAJOR bummer for indoor growers...but luckily there are a host of organic spray remedies you can buy to take care of them. Most of which…</p>
<p>They certainly look healthy too. Not brown and gunked up at all.</p>
<p>Yep sticky traps or the old the old apple cider vinegar (or wine) in a glass trick. Just put plastic wrap over the glass (secure with a rubber band) and poke a couple of pin holes in the plastic wrap. The gnats get in but wont get out.</p>
<p>Be on the look out for spider mites...a MAJOR bummer for indoor growers...but luckily there are a host of organic spray remedies you can buy to take care of them. Most of which involve a mixture of essential plant oils (2 to 4%) and a surfactant, like dish washing soap (.3 to .5%), and water. I've been making lots of 'fancy' homemade soap lately, so I have an arsenal of essential oils to choose from here. There is an interesting section on the topic of aphid and spider mite control near the end of this study...There's no need to read the whole thing unless your REALLY into Lavender and Rosemary plants.</p>
<p> <a href="http://www.certifiedorganic.bc.ca/programs/osdp/OSDP-FinalReport_I-016.pdf">http://www.certifiedorganic.bc.ca/programs/osdp/OSDP-FinalReport_I-016.pdf</a></p>
<p>Most all of the organic products for sale seem to work on the same principle, using some kind of oils to asphyxiate the mites. Making your own is just much much cheaper.</p>
<p></p> Thanks for the confirmation V…tag:aquaponicgardening.ning.com,2011-12-07:4778851:Comment:2629202011-12-07T23:55:38.658ZSteve Robinsonhttps://aquaponicgardening.ning.com/profile/SteveRobinson
Thanks for the confirmation Vlad. They're certainly long. Today I did notice a few small flying insects...maybe a gnat of some sort, flying in and out go the lettuce. Guess I need to get some sticky traps.
Thanks for the confirmation Vlad. They're certainly long. Today I did notice a few small flying insects...maybe a gnat of some sort, flying in and out go the lettuce. Guess I need to get some sticky traps. Those roots look pretty good…tag:aquaponicgardening.ning.com,2011-12-07:4778851:Comment:2630142011-12-07T23:13:48.013ZVlad Jovanovichttps://aquaponicgardening.ning.com/profile/VladJovanovic
<p>Those roots look pretty good Steve.</p>
<p>Those roots look pretty good Steve.</p>