Growing Lettuce With Different PH Levels
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- čas přidán 12. 01. 2019
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Lettuce doesn't tend to show nutrient deficiencies quite the same as other plants. Lack of nitrogen usually results in less growth rather than noticeable yellowing leaves. Also, in case anyone is wondering why the PH levels came out the way they did...Carbonic acid doesn't really take hold very quickly in the Kratky method. If the water is aerated however, then the PH tends to drop more easily. Another reason is likely due to tap water containing larger molecules of calcium carbonate and isn't really adsorbed by the plants, so as long as is a fair amount of PH buffer in the water, it will tend to stay neutral.
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You forgot the most important test.. Taste. Thanks for all the info.
I know this is an old video, but it has caused me to dig some more into your channel. Very much appreciate your no-nonsense delivery.
These type of experiments are so good, keep them coming!!
What a great little test! Thanks for sharing your results with the rest of us!
Love your very scientific approach to your experiments. Thanks for sharing your expertise. Bravo!
I remember seeing a video a few years back and I could've sworn I subscribed, sadly I was mistaken. I've made sure to subscribe this time around. Thanks!
Love the fact that you are using grams! Makes it much easier for us (the rest of the world) to understand! Again, thank you
That's normal when working with chemistry. Even the us does that. Jeez
@@LXW-Arts ?
Thank you for mentioning that I use the metric system because I don't understand the type of measurements Americans use.
I don't grow lettuce but your video gave several bits of info that Explains some of the problems I've had! Your explanations and reasonings are exactly what I would expect from a video of this type. I just subscribed!
Nice experiment, thank you for that. But one note: it is not possible to say it is significantly different or not, since you had only one plant and one experiment. You would need at least 3 plants of each pH (best in separate containers) and repeat it 3 times. That way you could do some statistical test (T-test, ANOVA...) to inffer the SIGNIFICANT differences. 12% diff in head mass and 15% in root mass looks pretty simmilar to me. Also it would be good idea to completely dry your samples before you wieght them. But still thanks for your effort.
One of the best channels I have ever subscribed to. I learned a lot about lights here. Thank you and Keep up the great job!
Very good fair test, impressed by your quick and Precise delivery.
Great videos as usual! The sad part of the hydroponic diy videos on the net is most are focused on medical grows which not all of us are into. Granted I have done those grows myself but it's nice to be able to use the same concepts but with a different outcome. Your videos are very informative for those who choose to grow food for themselves. Your videos always include in depth conclusions and don't just sit there showing off your plants like most.
you should try out Jeb Gardener. Not only will he show constant experimentation with food crops, but he is absolutely wonderful to watch. His editing and music are always fun.
Agreed, and cannabis has a very different nutrient profile from something like basil or lettuce.
@Dying Moths: I love Jeb but think he's better as entertainment. mhpgardener has a lot of information but he did it when cameras weren't near what they are today so the quality suffers.
Thanks for this interesting video. Will be watching much more.
I always wanted to know this, thanks.
Great video! Thanks for sharing! You just gained another subscriber!
I happened to "like" this almost immediately just because I appreciate you discussing/sharing this. Anyway, right as i liked it when was the audio kicked in a little more. It was like I got an upgrade for liking
I enjoyed the video. Thank you for posting fellow kratky gardener!
Good experiment. Remember it is only a n of 1. So you would need to repeat this multiple times to get a true picture.
You may find that high pH does not always have heavier root mass.
No you do it...
@@mindful_minipods no u
What's important is the amount of stress the plant goes through in order to absorb it's required nutrients. The recommended 5.5 - 6.5 pH for growing lettuce and most bracicas makes it easier on the plant to absorb as many nutrients as possible during it's life span. Usually results in a healthier, tastier vegetation.
Great video! I really want to know where you got those containers (reservoirs). They look like exactly what I have been looking for but unable to find.
great vid brotha
Was a good vid mate
A wonderfull experiment. Thx. 👍
I like your experiments. If you could make one on co2, I would appreciate. Thanks
Very interesting. I just subscribed
these are very cool. the plants put effort into controlling the pH around the roots.
An interesting experiment, cheers.
very cool scientific experiments. this helps a lot
Very informative, thanks
Good experiment 👏👏👏
great video, came across this randomly, subbed only 3 mins in.
Very interesting thanks for sharing!
Very helpful for a newbie like me.
This was pretty helpful
Very nice info in this.
Thanks for the video is very informative.
thank you for this!
If u do this test again, maybe add a taste test as well. Great video!
The root in High pH are more because the plant is trying to get more nutrients or recover the pH expanding the roots. Low pH do not help plant grow roots, neutral pH, has the perfect pH , and root growth to have more weight in the leaves that is the important we want. Thank this was an awesome experiment!
When I grow lettuce using the Kratky method I use nutrients at half strength (about 800 ppm). The lettuce has much less tip burn.
This was helpful!
600 PPm means how much EC ?
@@narohit yes
@@narohit 1,2
Ppm and size matter the less plant matter the less feed they need try and keep it low and go up at 25 at a time ppm
very good experiment
I think you are good in this kind of video, focus on experiment on hydroponic, consider the title, not so eye catching, and the voice clarity. the structure and ide is great. keep making great video. good luck! waiting for you next video.
Very helpful, especially in my case i dont check for my pH, because im only growing leafy greens and in small batches, for my takeaway if your growing in a commercial scale the weight will be significant because of the quantity, but if your just growing for consumption pH balancing is optional.
Cube Root Farming sort of. If you run aeration, then the ph can drop easily and become fairly acidic rather quickly. That can lead to root rot. Although much of the time having extra oxygen at the roots combats the anaerobic bacteria that is associated with rotting. It usually just means that you have to change out the solution once or twice.
Why include aeration when im just growing green leafy? Kratky system is best for leafy vegetable as per my experience.
Thanks mannn🤘🏻
thank you for this SCIENCE!
well done!!
I ordered butterhead buttercrunch lettuce seed earlier today and was hoping i can grow some in the home under a grow light, but not using hydroponics. The butterheads are getting rather pricey in store...up to $3 per one. The butterheads storage life is better than most and has a more milder less acid effect on the stomach.
Thank you.
wow,,,cant wait to grow lettuce this yr,,,,google charts obviously incorrect in many cases
Thanks!
I grow medical "tomatos" just subscribed. Your videos are very informative. Thank you
Yeah this was very informative for my... Jalapeno grows.. !!
Police will check it out
@@hugonewguy4009 shut up bitch
I use white vinegar or distillate and it's works perfect if ya drop ya water to 5.5 it will rise slowly and allow all nutrition to be available
Good experience🙂👍
Im a new friend i enjoy your videos 💖
Nice experiment, How often do you change the water or just increase it?
Erwin Castillo it gets changed when it runs low.
Little gem of information
- lettuce pun
You should get a refractometer and test the brix (sugar) levels in each plant that way we can see if a certain ph or ppm makes a difference on flavor.
Nice call. Brix is the trix
@@northeastslingshot1664 yea, higher mineral content and sugar content should mean much healthier and tastier food. They look the same or close with your eye but when you test it the results may show that one or the other is far superior to the other.
HIBRIXXXXX
You have me wanting to try one with high ph say 8 or 8.5 and keep it there
for outdoor dwc to see if it still picks up all minor nutes and thrives with the advantage of less algae growth do to high ph
Yes now my Tomatoes will always be taking in all the nutrients!
Thank-you
amazing Research thank you buddie! come take a Look in my aquaponics system, see you!
Brilliant video. Great PH facts and results.
Hello! Could you please put a link to the chart that you inserted at the end of your video in your description as well? Thank you~
Jay Chen google image it. I don’t know specifically the site it came from.
The roots with less N grew the most
Not surprised since cutting root better with less N around
suggestion: you should have tested the TDS level before and after.
Thankyou sir
Wow..tnx for ur experiments..could u tell me what lights u are using! Tnx
All kinds, but all led.
@@GrowingAnswers tnx! Laura
thanks
I would redo the experiment and readjust ph to 4.5 6.5 and 8.5 each day like you normally would in a hydroponic unit. Many nutrients contain ph stablizers. I'd rn with Jacks 123, or another professional powdered line that has no stablizers. For instance with some nutrients like sensi grow ph perfect. As soon as you added nutrients to all those tubs the ph in all of them would have gone to 5.8.
Maybe do it with more samples?
I gather you did not adjust the pH in each container to keep it at the same level thruout the experiment. This in my novice opinion skewed the results. Good lettuce. Great job within 4 weeks.
Did you rotate the plants or keep them in the same order while growing? Not sure if it would make any difference
Dont need to. Par meter ensures light is the same for each.
Wow as it turns out, lettuce is very forgiving.
I think that the 'precipitate' could be sugars released by the roots that'd typically signal myco in the soil.
Sugar wouldn’t precip at that ph.
@@GrowingAnswers i can leave nutrient solution in a bottle for months with 0 precipitation, so that why i question it.
One more question though, did you taste the lettuce? Did they taste different? Which one had the best taste? Would love to know thank you
All the same
What nutrients did you use? Masterblend? GHE?
I like the idea but..so small containers will make phone fluctuations crazy anyway in dec style you can watch it go from 7.8 to 4 in a day and back up next.. u need at least 50litres to bring ph to stable ranges
what type of soil is this that you are growing these on?
You'd really need to test a few rows of lettuce in each pH and average their weights to control for seed variance. Even from the same packet some some seeds do better than others. I also suspect pH effects the availability of nutrients from the soil..and rocks..the whole process of microbes retrieving them in exchange for sugars. I'd think the process if just absorbing it ready nutrients in solution is very different. Lastly, lettuce is a light feeder. It would be interesting to see how a heavy feeder did. I assume the latter needs a wider variety of elements and more of them would be more or less available with the variance in pH.
what about the same test with different light intensity ?
You should taste it dear sir. BTW thanks for the video.
The graph you showed for nutrient uptake is different than ones I’ve seen for Cannabis. Is the one you showed for lettuce?
JG Photography not sure. It just a general guide really. There’s a common ground when it comes to ph across almost any hydroponics grow. Soil is usually closer to neutral with the exception of a few plants.
Did I miss where he measured the Ph after the month? How much carbonic acid was transfered into the water.
Ty sir
did you replace the solution or just 1 time for the whole month
Bro you live in millersburg too? @growing answers I just noticed the charm engine note pads 😅
Blake Hinds I live about an hour from there
Growing Answers nice that’s crazy small world!! I just started my indoor garden and I’ve been watching a lot of your videos thanks for all the info you provide 🙏
Informative video,
Would this pH effect be same in poly house I.e. in natural light also ?
rohit saini not sure what you mean by natural light. The only difference between sunlight and artificial light is usually abundance’s of IR and UV.
@@GrowingAnswers yes, I mean sunlight
@@GrowingAnswers also in Delhi, all consider 5.9 pH is the best for lettuce,
Thanks and waiting for ur response
rohit saini I don’t think it matters that much. Heat is probably the main culprit when it comes to natural light. Heat stress and non-optimal ph likely play on each other so results would show a larger margin in that case.
@@GrowingAnswers we use shade net to cut heat generated by sun light , can we use double layer of shade net to cut or reduce heat by sun,
It’d be interesting to see how the EC was affected in each tub as well as the pH.
I think it's pretty obvious. Don't need an EC reading when the proof is in the pudding :)
Just wait till he discovers high grade 😉
Hello! Did you put Pump on it? Or they don't need ? I know that if you don't put air , they grow slowly but can they survive one month? thanks!
No air
i think that the nutrient absortion correlation to pH its only a variable when you are feeding with solid (undisolved) fertilizer because each nutrient will disolve at a different pH if you are using a liquid feeding nutrient solution you dont need to worry about the pH just for the well being of the plant (in order not to burn the root system) please tell me if im wrong im just here learning as everyone else.
I don’t really think it matters whether it’s solid or liquid because it’s all solid at some point. What’s dissolved in solution with the liquid fertilizer will fall out of solution at different pH levels. If I remember correctly with the experiments that I’ve done, is that pH only really matters mostly at the extreme. So for a pH of six or a pH of seven it’s not really going to matter much at all.Some people like to make it dead on when they make their solution. For example 6.3 or 6.5. Between both of those numbers it really doesn’t matter. It doesn’t have to be that perfect. It’s going to adjust itself anyways within a very short time in hydroponics. It will also change with soil but does it more slowly because soil has buffers in it usually. When it comes to growing indoors, nobody is really growing with solid fertilizers. That’s more than a lawn or outdoor garden thing. And really the purpose of that is time release.
I was wondering what temperature ranges for the res water is ok for kratky? My growroom gets warm in the summer.
Ideally below 70
Good work . As you say variation could be down to genetics , the middle one will get significantly more light . But I don't see how the roots or nutrient can absorb any CO2 it's pretty much a sealed container. Oxygen is available to the roots since it's 20% of the air and small gaps would allow sufficient entry , but no plants want oxygen , they produce it , it's a waste gas to them they want rid off.
if somebody could enlighten me, dont you need to keep the water aerated in the storage tote for the plant to live?
What PAR meter do you use again?
What is that spongy pad that you grow seeds in?
And is there a DIY way to make them? or any alternatives?
Foxy rock wool
@@GrowingAnswers Why thank you.
02:36 the answer.
Taste?
Differences in taste?
That's important too.
Gary Green no difference. Sugars are produced in the leaves and since there was no real difference in coloration, they all tasted the same. Most of the time, the only difference in taste you’ll get is from different lighting.
If u wanted to see difference in taste grow TLO , not salt based nutrients .
Growing Answers taste has to do with what u fed the plant. Synthetic has horrible flavor, true live organics has the most pure natural taste . Although growth rates are significantly smaller with organic soil. I prefer flavor over yield when it comes to vegetables.
King Salmon well yes feeding and lighting. But since all the plants were fed the same and had the same lighting, there’s no difference. Typically though when talking about eating the leafy greens and not the fruit of a plant, lighting has a significant impact on leaf taste.
How much water does a lettuce need until harvest?
Would a 1.5 litre container work?
SarRyuKen That is going to depend on a few factors. How much air circulation, heat and transpiration. A gallon per plant usually works best for me
Growing Answers - Thanks. Just wanted a rough idea
Where do you find the substrate balls?
I wasn't sure whether this was a experiment for pH , or diff light spectrum.
Just ph