seaofgreen18
Well-Known Member
Nutrient deficiencies basic chart
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seaofgreen18
Well-Known Member
Ive noticed Alot of ppl on here diagnosing MG issues. Be sure that what it is before you add more MG this is why
You are a pinch low at 190.1 and Mg is elevated. I normally see that at 200. Luckily gypsum won't drag your pH and it is really hard to have too much Ca. It is crucial to preload Ca in veg. If you wait til flower it is too late Hold off until flush and retest Mg You are too high at 61.6. Mg is the bully cation and will outcompete both Ca and K so do not go in with a heavy hand. Keep your eye open for Mg deficiency later in the round. If you see interveinal chlorosis on lower leaves add 2 tbsp epsom per gallon of water and add to the soil as a drench as a one or two time application. Only add if there is an issue. Please limit magnesium inputs as adding calcium and potassium to balance your elevated Mg will add significant osmotic stress.
You are a pinch low at 190.1 and Mg is elevated. I normally see that at 200. Luckily gypsum won't drag your pH and it is really hard to have too much Ca. It is crucial to preload Ca in veg. If you wait til flower it is too late Hold off until flush and retest Mg You are too high at 61.6. Mg is the bully cation and will outcompete both Ca and K so do not go in with a heavy hand. Keep your eye open for Mg deficiency later in the round. If you see interveinal chlorosis on lower leaves add 2 tbsp epsom per gallon of water and add to the soil as a drench as a one or two time application. Only add if there is an issue. Please limit magnesium inputs as adding calcium and potassium to balance your elevated Mg will add significant osmotic stress.
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seaofgreen18
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This is in soil can't speak for the hydro growers
Rimrock Analytical
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The influence pH has on bioavailability is pretty dramatic. We've seen some very interesting results from growers we've tested their nutrient levels both in the plant tissue and in their growing media (soil and hydro). Cases where you'd normally be in a nutrient lockout scenario showing deficiencies in the plant tissue because the pH range was off. This can make diagnosing excesses and deficiencies very difficult without looking at a data breakdown of each macro and micro-nutrient.
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seaofgreen18
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Right on Brother
I don't see it in your chart. On lower leaves what is yellow with red in the middle? Also upper leaf tips curl down.
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seaofgreen18
Well-Known Member
Try these maybe this will help the other chart was pretty basic not sure if you can read them . Always check ph first thing that's the starting point both irrigation water and Media
. Always check ph first thing that's the starting point both irrigation water and Media- Thread starter
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seaofgreen18
Well-Known Member
marijuana nutrient deficiency chart
There are several sizes of those two charts.
The first one is called the Jorge Cervantes Cannabis Deficiencies and Excesses.
The second is a popular chart that will be easy to find.
Do a search using
cannabis deficiencies chart
and then select images and sort through them looking for images that fit the computer monitor or phone screen when opened.
A good web page to bookmark is from Dutch Passion Seeds and includes color drawings showing deficiencies but also photos of examples which is very helpful.
Do a search using
A visual guide to cannabis deficiencies Dutch Passion
The first one is called the Jorge Cervantes Cannabis Deficiencies and Excesses.
The second is a popular chart that will be easy to find.
Do a search using
cannabis deficiencies chart
and then select images and sort through them looking for images that fit the computer monitor or phone screen when opened.
A good web page to bookmark is from Dutch Passion Seeds and includes color drawings showing deficiencies but also photos of examples which is very helpful.
Do a search using
A visual guide to cannabis deficiencies Dutch Passion
I cannot come up with a deficiency or excess that produces yellow leaves with red in the middle but it might be a Calcium deficiency though usually those have a bronze or copper color. These bronze colored spots or areas would often would show up on my plants on the lower leaves.
The tips curling down could be an excess of Nitrogen, especially if the tips have turned brown. Sometimes watering to often can cause a downward curl to the fingers on the leaves which people call 'clawing'.
A couple photos taken in natural or white light of the plant with the leaf still attached will help narrow down possible causes.
