Optimum range in Chinese cabbage under floating mulch: physiological indices and ionic balance

Chinese cabbage plants (Brassica pekinensis [Lour] Rupr. cv. Nagaoka 50) we re grown at C.I.F.A. "Camino de Purchil" in Granada - Spain. The plots were covered with floating mulches (Polyethylene: T-1; Polypropylene: T-2) in c omparison to uncovered control plants (T-0). In the present research we det ermine the optimum range of ionic balance and related parameters and ratios . Furthermore, we also determine the optimum range of physiological indices (Alcaline Index, Fe Index and Vegetative Index) and physiological ternary groups of soluble and total macro and micronutrients.