A nutrient deficiency that causes leaves to turn yellow with the veins remaining green. Advanced stage is yellow then dead. Treat with Texas Greensand and compost. Insufficient iron in plants is characterized by striped, yellow or colorless areas on young leaves. Yellow leaves appear on the new growth. The growth of new shoots is affected and plant tissues may die. Too much lime causes iron deficiency to develop. Treatment: Plenty of manure, compost, blood or cottonseed meal, and tankage are the best materials to use in correcting iron deficiency. Magnesium deficiency looks identical.