Yellowing Leaves, Striping, leaf loss

[Mike20132]

Definitely do that...preventative action is far better than trying to catch up!! Agree magnesium.

With all due respect, of course, the preponderance of advice I have read concerning adding or adjusting any particular nutrient was something you did after the plant tells you it needs it. I mention this because I think an excess of Ca and Mg will inhibit the uptake of P and K.

Again, I am not remotely qualified to wear your shoes..... so I am curious if perhaps I am not fully understanding the application of Ca/Mg suppliments.

 

[G.Leave]

With all due respect, of course, the preponderance of advice I have read concerning adding or adjusting any particular nutrient was something you did after the plant tells you it needs it. I mention this because I think an excess of Ca and Mg will inhibit the uptake of P and K.

Again, I am not remotely qualified to wear your shoes..... so I am curious if perhaps I am not fully understanding the application of Ca/Mg suppliments.

If one plant in your group is showing deficiencies, then its very likely the other plant will be following in its footsteps, especially as flowering progresses and the need for the nutrient is increased as stores are depleted. As you get more and more adept at knowing when the need for certain nutrients comes, you can tailor your feed ahead of time to often prevent nutrient deficiencies before they begin.
You can wait until deficiencies show to take action yes...but sometimes when they show they come out of nowhere hard and fast, and are very hard to catch up and bring back to health.

 

[G.Leave]

With all due respect, of course, the preponderance of advice I have read concerning adding or adjusting any particular nutrient was something you did after the plant tells you it needs it. I mention this because I think an excess of Ca and Mg will inhibit the uptake of P and K.

Again, I am not remotely qualified to wear your shoes..... so I am curious if perhaps I am not fully understanding the application of Ca/Mg suppliments.

I accidentally split a bag of lime last year and didnt clean up enough....so there was an overload of calcium in the soil...put it out of my mind...anyways its into flower and this weird deficiency starts showing...i do a whack of research and realize that its a rare boron deficiency...more research I read about too much calcium will block boron uptake and that is exactly what happened...started feeding with borax and in the end the plant turned out fine. But interesting that it did not interfere with P or K!! Day of harvest

 

[Mike20132]

If one plant in your group is showing deficiencies, then its very likely the other plant will be following in its footsteps, especially as flowering progresses and the need for the nutrient is increased as stores are depleted. As you get more and more adept at knowing when the need for certain nutrients comes, you can tailor your feed ahead of time to often prevent nutrient deficiencies before they begin.
You can wait until deficiencies show to take action yes...but sometimes when they show they come out of nowhere hard and fast, and are very hard to catch up and bring back to health.

That certainly makes sense.

Since i am growing so few (2) plants at a time, and always different strains, that hadn't occurred to me.

I wonder if there are any threads on the subject of nutrient management that would be helpful to the new grower, like me. I have an affinity for @pop22 's threads in the myth busting forums. I would like to see something from him on that subject. Being an Engineer/Amateur Mad Scientist, that kind of information resonates with me.

Bit of an aside, when I moved out to this place, which is in a very rural area, one of my friends lamented, "I see. This way if one of your experiments go south, there wont be that many people to evacuate." Not sure why that memory came to me just now, but there ya go.

 

[Mike20132]

I accidentally split a bag of lime last year and didnt clean up enough....so there was an overload of calcium in the soil...put it out of my mind...anyways its into flower and this weird deficiency starts showing...i do a whack of research and realize that its a rare boron deficiency...more research I read about too much calcium will block boron uptake and that is exactly what happened...started feeding with borax and in the end the plant turned out fine. But interesting that it did not interfere with P or K!! Day of harvest
View attachment 891423

It really is amazing how plants react to things that we know in our hearts should be really, really, bad.

 

[G.Leave]

I wonder if there are any threads on the subject of nutrient management that would be helpful to the new grower, like me. I have an affinity for @pop22 's threads in the myth busting forums. I would like to see something from him on that subject. Being an Engineer/Amateur Mad Scientist, that kind of information resonates with me.

Hmmm no threads of that nature that i know of!!

 

[Mike20132]

Hmmm no threads of that nature that i know of!!

I would love to be qualified enough to write one up. I can do research, bit without experiencing the effect in the real world, I do not want to just republish other people opinions without seeing it work for myself. maybe in a year or so....

 

[G.Leave]

For me I use as much instinct as anything...thats what can make explanations on feeding so difficult sometimes....you have to really connect to the plant, and be very observant......until you make mistakes and learn from them for the next round. I like making errors, especially when using a new nutrient line, even critical errors. As long as I know where I messed up, I know what to avoid next time, and where to improve my feeding schedule. A wise man once told me "You will learn more from your failures, than you will learn from your successes"
And he is so right!!

 

[Waira]

pardon the delay, it's been a zoo in here!...... SJ, this is weird one! Here we have a reverse pattern of yellowing, along the vascular system, as opposed to interveinal chlorosis seen in Mg, Zn, and some other defc.'s,...
--> Mg

-----> Zn--

....Fe and S typically fade the whole leaf, veins and all, more or less evenly,... S usually fades whole plant top to bottom, tops first and worst; Fe hits newest growth first, and center of leaf out (best clue that it's Fe defc.)... you'll see when you look at the pics in the Depot,...
The only thing I've seen that does this is a weird Ca defc manifestation; here are some pics, one from here in fact, BUT in your case I don't see the tell tale mini spotting, your color fade is even...also confounding is that it's hitting all over--->

>>>> so, I've seen this before, but never figured out exactly what's behind it,... I'm not even sure if it's pH related, but that would be wise to check in-pot (Accurate 8 soil pH probe is a decent unit)... A soil pH probe is the way to go there, otherwise it's the dubious run-off method (straight run-off pH is not accurate BTW, but since you did get 6.1, it hints at mildly too acidic; you need to know the pH of the plain water that went in first though, never use feed solution),.. the fact that it been happening throughout growth though, makes me think pH isn't in play for this most likely,... other symptoms more diagnostic of off pH would have shown by now,...
Biobizz is very mild, the soil is very light as well, so you should be feeding at full strength or near it, ditto for Ca-Mg... LED puts an increased demand on Ca too,... how far away is the light? Best thing to try is to ramp up your feed strength over a few feedings, and see about getting more micronutrients in there,.. a dedicated supplement is best for this, Earth Juice Microblast is a good one,....


>>

With all due respect, of course, the preponderance of advice I have read concerning adding or adjusting any particular nutrient was something you did after the plant tells you it needs it. I mention this because I think an excess of Ca and Mg will inhibit the uptake of P and K.

Again, I am not remotely qualified to wear your shoes..... so I am curious if perhaps I am not fully understanding the application of Ca/Mg suppliments.

-- Mike, that is not the case,... by the time you see actual symptoms, the plant is already suffering and is adversely affected... especially true of micronutes, which are key components in enzymes, catalysts, cofactors,.... this is why I always add micro's no matter what, a steady ready low level supply will see to preventing lack-of defc.'s,....keep in mind that several nute elements are not mobile within the plant, they can't be translocated from established tissue to where they are more needed,.. most of the micro's are like this,....

 

[SarahJay]

pardon the delay, it's been a zoo in here!...... SJ, this is weird one! Here we have a reverse pattern of yellowing, along the vascular system, as opposed to interveinal chlorosis seen in Mg, Zn, and some other defc.'s,...
--> Mg

-----> Zn--

....Fe and S typically fade the whole leaf, veins and all, more or less evenly,... S usually fades whole plant top to bottom, tops first and worst; Fe hits newest growth first, and center of leaf out (best clue that it's Fe defc.)... you'll see when you look at the pics in the Depot,...
The only thing I've seen that does this is a weird Ca defc manifestation; here are some pics, one from here in fact, BUT in your case I don't see the tell tale mini spotting, your color fade is even...also confounding is that it's hitting all over--->

>>>> so, I've seen this before, but never figured out exactly what's behind it,... I'm not even sure if it's pH related, but that would be wise to check in-pot (Accurate 8 soil pH probe is a decent unit)... A soil pH probe is the way to go there, otherwise it's the dubious run-off method (straight run-off pH is not accurate BTW, but since you did get 6.1, it hints at mildly too acidic; you need to know the pH of the plain water that went in first though, never use feed solution),.. the fact that it been happening throughout growth though, makes me think pH isn't in play for this most likely,... other symptoms more diagnostic of off pH would have shown by now,...
Biobizz is very mild, the soil is very light as well, so you should be feeding at full strength or near it, ditto for Ca-Mg... LED puts an increased demand on Ca too,... how far away is the light? Best thing to try is to ramp up your feed strength over a few feedings, and see about getting more micronutrients in there,.. a dedicated supplement is best for this, Earth Juice Microblast is a good one,....


>>

-- Mike, that is not the case,... by the time you see actual symptoms, the plant is already suffering and is adversely affected... especially true of micronutes, which are key components in enzymes, catalysts, cofactors,.... this is why I always add micro's no matter what, a steady ready low level supply will see to preventing lack-of defc.'s,....keep in mind that several nute elements are not mobile within the plant, they can't be translocated from established tissue to where they are more needed,.. most of the micro's are like this,....

Helloo @Waira , only just seen this and thought id recap on my garden situ, since first posting , i have started ph testing water , water out of the tap is 7.11ph , which i have been adding cal mag , top max and bloom to then adjusting ph to 6.0 before feeding . This is a massive learning curve and i didnt expect my first grow to go problem free. Tomorrow is first day of week 8 for these plants with one running one week behind the rest. The led’s are vipaspectra 450 and mars hydro 600 both 15 inches above canopy i havent moved these ive just let plants grow towards the light. Attached is photo of garden set up , then i will create post for each individual plant. None without issues