help iam a newbe
- Thread starter reno
- Start date
DST
Well-Known Member
This is a general guide (pasted below) that I use...may be as much use as a chocolate fireguard but hey, always good to have. I am not quite with you on how you are growing as I use coco. I would look at it logically however.
Is this the only plant that is affected?
Has anything whatsoever changed for it (enviro, food, air, light)?
It looks like a mag deficiency, but then the leaves are not looking like they are yellowing from the outside, but are there other ferts that could be affecting it, cross ref the info below perhaps.
If in doubt, start by giving it a water down with water only. Also a picture with the whole plant, outside of the grow lights would also help the real pro's tell you what it is. Hope this helps the mind start to move, whatever happens, the leaves that are gone are gone, so you need to think of a solution to get it through to the end (in as near as one piece as possible) good luck growing china.
DST
Plant Nutrient Deficiency Symptoms
Macronutrients
Calcium (Ca)
Symptoms: New leaves are distorted or hook shaped. The growing tip may die. Contributes to blossom end rot in tomatoes, tip burn of cabbage and brown/black heart of escarole & celery.
Sources: Any compound containing the word 'calcium'. Also gypsum.
Notes: Not often a deficiency problem and too much will inhibit other nutrients.
Nitrogen (N)
Symptoms: Older leaves, generally at the bottom of the plant, will yellow. Remaining foliage is often light green. Stems may also yellow and may become spindly. Growth slows.
Sources: Any compound containing the words: 'nitrate', 'ammonium' or 'urea'. Also manure.
Notes: Many forms of nitrogen are water soluble and wash away.
Magnesium (Mg)
Symptoms: Slow growth and leaves turn pale yellow, sometimes just on the outer edges. New growth may be yellow with dark spots.
Sources: Compounds containing the word 'magnesium', such as Epson Salts.
Phosphorus (P)
Symptoms: Small leaves that may take on a reddish-purple tint. Leaf tips can look burnt and older leaves become almost black. Reduced fruit or seed production.
Sources: Compounds containing the words 'phosphate' or 'bone'. Also greensand.
Notes: Very dependent on pH range.
Potassium (K)
Symptoms: Older leaves may look scorched around the edges and/or wilted. Interveinal chlorosis (yellowing between the leaf veins) develops.
Sources: Compounds containing the words 'potassium' or 'potash'.
Sulfur (S)
Symptoms: New growth turns pale yellow, older growth stays green. Stunts growth.
Sources: Compounds containing the word 'sulfate'.
Notes: More prevalent in dry weather.
Micronutrients
Boron (B)
Symptoms: Poor stem and root growth. Terminal (end) buds may die. Witches brooms sometimes form.
Sources: Compounds containing the words 'borax' or 'borate'.
Copper (Cu)
Symptoms: Stunted growth. Leaves can become limp, curl, or drop. Seed stalks also become limp and bend over.
Sources: Compounds containing the words 'copper', 'cupric' or 'cuprous'.
Manganese (Mn)
Symptoms: Growth slows. Younger leaves turn pale yellow, often starting between veins. May develop dark or dead spots. Leaves, shoots and fruit diminished in size. Failure to bloom.
Sources: Compounds containing the words 'manganese' or 'manganous'
Molybdenum (Mo)
Symptoms: Older leaves yellow, remaining foliage turns light green. Leaves can become narrow and distorted.
Sources: Compounds containing the words 'molybdate' or 'molybdic'.
Notes: Sometimes confused with nitrogen deficiency.
Zinc (Zn)
Symptoms: Yellowing between veins of new growth. Terminal (end) leaves may form a rosette.
Sources: Compounds containing the word 'zinc'.
Notes: Can become limited in higher pH.
Is this the only plant that is affected?
Has anything whatsoever changed for it (enviro, food, air, light)?
It looks like a mag deficiency, but then the leaves are not looking like they are yellowing from the outside, but are there other ferts that could be affecting it, cross ref the info below perhaps.
If in doubt, start by giving it a water down with water only. Also a picture with the whole plant, outside of the grow lights would also help the real pro's tell you what it is. Hope this helps the mind start to move, whatever happens, the leaves that are gone are gone, so you need to think of a solution to get it through to the end (in as near as one piece as possible) good luck growing china.
DSTPlant Nutrient Deficiency Symptoms
Macronutrients
Calcium (Ca)
Symptoms: New leaves are distorted or hook shaped. The growing tip may die. Contributes to blossom end rot in tomatoes, tip burn of cabbage and brown/black heart of escarole & celery.
Sources: Any compound containing the word 'calcium'. Also gypsum.
Notes: Not often a deficiency problem and too much will inhibit other nutrients.
Nitrogen (N)
Symptoms: Older leaves, generally at the bottom of the plant, will yellow. Remaining foliage is often light green. Stems may also yellow and may become spindly. Growth slows.
Sources: Any compound containing the words: 'nitrate', 'ammonium' or 'urea'. Also manure.
Notes: Many forms of nitrogen are water soluble and wash away.
Magnesium (Mg)
Symptoms: Slow growth and leaves turn pale yellow, sometimes just on the outer edges. New growth may be yellow with dark spots.
Sources: Compounds containing the word 'magnesium', such as Epson Salts.
Phosphorus (P)
Symptoms: Small leaves that may take on a reddish-purple tint. Leaf tips can look burnt and older leaves become almost black. Reduced fruit or seed production.
Sources: Compounds containing the words 'phosphate' or 'bone'. Also greensand.
Notes: Very dependent on pH range.
Potassium (K)
Symptoms: Older leaves may look scorched around the edges and/or wilted. Interveinal chlorosis (yellowing between the leaf veins) develops.
Sources: Compounds containing the words 'potassium' or 'potash'.
Sulfur (S)
Symptoms: New growth turns pale yellow, older growth stays green. Stunts growth.
Sources: Compounds containing the word 'sulfate'.
Notes: More prevalent in dry weather.
Micronutrients
Boron (B)
Symptoms: Poor stem and root growth. Terminal (end) buds may die. Witches brooms sometimes form.
Sources: Compounds containing the words 'borax' or 'borate'.
Copper (Cu)
Symptoms: Stunted growth. Leaves can become limp, curl, or drop. Seed stalks also become limp and bend over.
Sources: Compounds containing the words 'copper', 'cupric' or 'cuprous'.
Manganese (Mn)
Symptoms: Growth slows. Younger leaves turn pale yellow, often starting between veins. May develop dark or dead spots. Leaves, shoots and fruit diminished in size. Failure to bloom.
Sources: Compounds containing the words 'manganese' or 'manganous'
Molybdenum (Mo)
Symptoms: Older leaves yellow, remaining foliage turns light green. Leaves can become narrow and distorted.
Sources: Compounds containing the words 'molybdate' or 'molybdic'.
Notes: Sometimes confused with nitrogen deficiency.
Zinc (Zn)
Symptoms: Yellowing between veins of new growth. Terminal (end) leaves may form a rosette.
Sources: Compounds containing the word 'zinc'.
Notes: Can become limited in higher pH.
cowboylogic
Well-Known Member
What, try and help just to be called a jerk. Ya right.