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Biostimulants are products that increase plant growth, resistance to water and abiotic stresses. it compositions, such as humic acids, amino acids, Ascorbic acids and other compounds. These substances cause changes in fundamental and structural processes to influence plant growth through enhanced tolerance to abiotic stresses and increase grain yield. The objectives of the present study were to investigate the effect of the foliar application of amino, humic and ascorbic acids with mineral fertilizers on growth, yield and chemical composition of wheat. The filed investigation was carried out at Baloza Research Station of the Desert Research Center, North Sinai, Egypt during the two successive seasons of 2019/2020. The experiment was conducted in a split plot design, with three replicates. The results obtained the yield components, total antioxidants, total phenol and nutrients concentration of wheat were increased with increasing the organic acids and antioxidants rates. The beneficial effect of treatments was arranged descending by as follows; ascorbic acid (antioxidants) > amino acids > humic acid > control. The most effective treatment was Am2 AS2 with hum2 (ascorbic acid at 600 ppm) with amino and humic acids (at 600 ppm), which achieved 3.4 ton/fed grains of wheat. The foliar application of antioxidants recorded higher increases of yield parameters and nutrients content in straw and grains of wheat than amino acids and humic acid, while the humic acid showed the lowest effect.

american journal of agriculture and forestry/journal of agriculture and forestry

Evaluates Effect of Amino Acids, Humic Acid and Antioxidants as Foliar Application on the Biochemical Content and Productivity of Wheat Under North Sinai Soils Conditions