Zinc Nitrate: source of zinc and nitrogen; also serves as a setting agent to dye something, helping to form an insoluble compound with the dye. Nitrogen is needed for proteins, enzymes and all metabolic processes involved in the synthesis and transfer of plant energy. Nitrogen is part of all living cells and is part of chlorophyll which is the green pigment in plants that makes photosynthesis occur. Nitrogen aids in rapid growth, seed and fruit production, and promotes lush leaves. Zinc aids in carbohydrate transformation and also regulates the consumption of sugar in the plant. Along with manganese and magnesium, zinc promotes all the same enzymatic functions. Zinc also aids in chlorophyll production.