74ad7966_Nutrition__Toxicity
[Element] Copper [Deficiency] young leaves dark green and misshapen, curling into a tube, petioles bent downward, few or no flowers remedy: use foliar spray with 0.1 to 0.2% solution of copper sulfate to which 0.5% hydrated lime has been added. [Toxicity] 
reduced growth, symptoms of Fe chlorosis
Nutrition
Toxicity