Help

[madmanc06]

ello guys got a few probs started in veg rooms since temps have dropped off 3 of my plants hav started to wilt with thurned up an turned down leaves a rust appears to b developin all in last few days heres a few pics ta show ya sryy they aint greates qual . barrin temps there hav been no changes food wise other plants in room seem fine hopin its a def an not fungus

any advice would be much appreciated tia

[Owderb]

Looks like a potassium prob possibly

Potassium (K)

Potassium is involved in maintaining the water status of the plant and the tugor pressure of it's cells and the opening and closing of the stomata. Potassium is required in the accumulation and translocation of carbohydrates. Lack of potassium will reduce yield and quality.

Potassium deficiency (K).

Older leaves are initially chlorotic but soon develop dark necrotic lesions (dead tissue). First apparent on the tips and margins of the leaves. Stem and branches may become weak and easily broken, the plant may also stretch. The plant will become susceptible to disease and toxicity. In addition to appearing to look like iron deficiency, the tips of the leaves curl and the edges burn and die.

Potassium - Too much sodium (Na) displaces K, causing a K deficiency. Sources of high salinity are: baking soda (sodium bicarbonate "pH-up"), too much manure, and the use of water-softening filters (which should not be used). If the problem is Na, flush the soil. K can get locked up from too much Ca or ammonium nitrogen, and possibly cold weather.

[madmanc06]

thx for that owderb temps were in high 30's then over last week dropped below 20 will flush em in morning an tidy em up see how they go big thx

[madmanc06]

think i mighta worked the prob out was reppoting sum cuttings in week made a weak feed up added root stim but after finnishin i think these 3 got las of the water only thing thats been dif from the other 3 in there an mother whcich r all doin well still .Gave em a flush other day jus gotta wait an see now they dont look happy thou ahh well live an learn as they say

[madmanc06]

few more pics think these girls have had it