Physiological and Biochemical Responses of Tomato Plant to Amino Acids and Micronutrients Foliar Application

Some morphological, physiological and biochemical responses of tomato plant cv. 010 were determine under amino acids (Amino-Suam) and micronutrient solution include (iron 2 %, zinc 2 %, manganese 2 %, copper 1 % and boron 0.5 %) individually and in combinations. Two field experiments were conducted on September, 2017/2018 and 2018/2019 seasons at Faculty of Agriculture, Ain Shams University Farm, Shoubra El-Kheima, Cairo, Egypt. Three levels of amino-suam (0, 1000 and 2000 ppm), micronutrients solution (0, 500 and 1000 ppm) and their combinations were designed in complete randomized block design with three replications for each treatment and sprayed at 30, 45 and 60 days from transplanting. The results revealed that spraying with amino acids, micronutrients solution and their combinations stimulated vegetative growth parameters and yield components include, shoot height, number of branches and leaves per plant, leaf area and leaf fresh weight, fruits number per plant, average fruit weight, fruit diameter and total fruits yield/fed compared to control plants in both seasons. Data presented suggested that combinations treatments achieved significant increases for most vegetative growth parameters, fruits yield and some biochemical constituents like N, Fe, Mn, Cu, photosynthetic pigments forms and total soluble proteins contents in tomato leaves at 75 days from transplanting as well as concentrations of lycopene and ascorbic acid in fruits at harvest compared with control plants in both seasons.