PH for Foliar Sprays ?

[MedResearcher]

Got a slight dilema,

My flower room consists of 3x3 Tables. With 4, 3 gallon pots of CoCo on each table. Although on 2 of the tables I put a larger plant. 1 of the Larger plants is in a 15 gallon pot and the other is in the same 3 gallon pot.

Get to the point, the bigger plants seem to need more nutes they are yellowing, have purple stems, droopy leaves, slow growth; while the smaller plants are nice and green with normal colored stems and fast growth. They all share 2 reservoirs so I have to feed them the same ppm of nutes. So im thinking I can foliar spray the 2 larger plants to give them a bit more nutes.

My question is, should I PH the foliar spray?

Normally I never PHd the foliar spray, but I just read something about it, but it did not recomend a good PH for a foliar.

2nd Question, if you are suppose to PH the foliar sprays, would this include a Neem Oil Foliar spray, or just when you foliar nutes?


Any advice is welcome and appreciated, tks for your time^^

 

[MynameStitch]

Ehh that is a good question there........ I would not personally since it's being directed right to the plant..... I would just feed them and I would like to know how it goes with an update.

Where did you read about pH adjusting for foliar feeding?
No it would not include neem oil spray.

 

[MedResearcher]

Thanks for replying Stich, I had a feeling you would chime in.


So I foliared the larger plants, with a 50% strength solution of the Grow fert im using. I didnt adjust the PH at all, just water and grow at 50% of the labels suggested foliar apllication. That was about 9 hours ago. I should have taken pics, its hard to make progress in text.

Anyways I think they reacted good to it, some green came back, and they are perked up a bit. The plant in the larger bucket reacted better. I think the plant in the smaller bucket is a bit routbound which is making the problem even worst. I need to flip them to flower asap though so I dont think I will try to transplant it... maybe I should though... luckily its only about 1/8th of the crop.

Its really a hassle, other then this the Grow should turn out really nice, but this is making it hard. I have been bumping up the ppms on the nutes trying to get these larger plants to green up, and now one of the strains of the smaller plants top leaves are starting to Taco(fold up like a taco shell) a bit. Im not sure but I think maybe a slight salt build up.. sigh.. I could flush and refert I suppose... I dunno....

But ya, the foliar seemed good, I think I will hit the 2 larger plants with the foliar again tommorrow.

Any advice, input, is welcome and appreciated,
MR^^

 

[HeadyPete]

I would ph the spray because if nutes can lockup in soil and a rez, it can lockup in a foliar spray, plus I'm sure the leaves appreciate the proper ph. Acid or alkaline can burn them.

Careful with mold from spraying, I don't usually recommend spraying at all, but I see your need. Make sure to have good 24 hr air circulation around them make sure there is space between them.

 

[guineapig]

I have seen a grow that used one of the Dutch Masters foliar products, but not the "penetrator" product, and he said he wished he had tested pH because it burned some of his fan leaves......

I forget which product he used specifically, but he thinks that if he had properly combined it with the "penetrator" product, he would not have suffered the slight leaf-burn......i can find out the exact details if anyone needs the specific information....

I usually don't foliar-feed, but sometimes when the mother plants get really big, it helps to go through the leaves and pick out some of the older brownish leaves, then follow that with a light misting of Sanfaustino brand mineral water (a natural Calcium and Magnesium water which lists the pH as 5.9)......plants seem to love this water, either foliar fed or root-fed.....

kind regards from guineapig

 

[MedResearcher]

Thanks for the info Pete^^

What PH would you recomend, there growing in pure CoCo with a thin layer of Hydroton at the bottom of the bucket to avoid roots sitting in stagnant water?


The room is 100% sealed... or at least 99% C02 enriched 1200-1300 ppms, with a Dehumidifier set at 60% during lights off. I have yet to see any powdery mildew in this room, but at the very end of flower after I start to flush, my very densest strain can get some bud rot if I let it go to long. At that point I put the Dehumidifier down to 35%.


Im thinking the Taco leaves on the one strain, could possible be caused by either to much salt build up or not enough humidity. They seem to be Tacoing up to try to hold in the water, it is only Tacoed at the very top of the plant on the newer growth. Im debating either increasing waterings from every other day to once a day, and or possible raising the Dehumidifier to 65 or 70%.


This room is funny(sort of, actually alot more work), when or if it ever gets dialed in 100% the growth is really fast, but when its not dialed the plants just dont keep up. My Veg room is unsealed, un-Co2 enriched, less light, so it only takes a little bit of fert and bam the plants are dark green and lush.


Again any tips, input is welcome and appreciated thanks,
MR^^

 

[HeadyPete]

Ph to about 6.3, this is the middle of the range of acceptable ph.

Not sure about the tacoing, perhaps there is too much heat? Higher humidity will impede the plant's ability to transpire.