Effect of Spraying Cyanocobalamine (VIT. B12) , Glutamic Acid, Arginine, Asparatic Acid and Salicylic Acid on Productivity of Barhy Date Palms Growing Under Sandy Soil
This trial was performed throughout two experimental seasons 2017 and 2018 on Barhy date palms produced from tissue culture technique. The merit was highlighting the effect of using cyanocobalamine at 50 ppm, salicylic acid at 100 ppm and glutamic acid + asparatic acid + arginine at 100 ppm on fruiting of Barhy date palms grown under sandy soil. The palms received three sprays the first before hand pollination, the second just after fruit setting and the third at two months later. An outstanding promotion on the leaf area, total chlorophylls, percentages of N, P and K, bunch weight, yield and fruit characteristics was noticed due to using cyanocobalamine, salicylic acid and amino acids either applied alone or in all combinations over the control. The uppermost positive effects on the investigated parameters were ascribed to using amino acidsm salicylic acid and cyanocobalamine, in descending order. Combined applications were favourable than using each material alone in this respect. Carrying out three sprays of mixture of amino acids (glutamic acid, asparatic acid and arginine) at 100 ppm, salicylic acid at 100 ppm and vitamin B12 at 50 ppm was responsible for counteracting the inferior effects of soil and water irrigation salinity on fruiting and at the same time gave better fruit characteristics of Barhy date palms grown under sandy soil.
Keywords - Cyanocobalamine (B12), Salicylic Acid, Glutamic Acid, Asparatic Acid And Arginine, Barhy Date Palms, Growth, Yield , Fruit Characteristics