Effect of Amino Acids Addition and Spraying with Glutathione and Kaolin in Growth Apricot Transplants

Abstract

This study was conducted in a lath house, Dept. Of Hort. and Landscape, College of Agricultural Engineering Sciences, Univ. Baghdad, Al-Jadriya during 2022 growing season to investigate influence of liquid organic fertilizer (Siapton 10 L) and spraying with glutathione and kaolin on some vegetative growth characteristics and leaf mineral content of two year’s old of “Red” apricot transplants. Factors of study experiment included addition of two levels of liquid organic fertilizer (Siapton 10 L) containing a group of amino acids to soil, without addition (S0), and 3 ml.transplant-1 (S3), while glutathione spray was sprayed with three levels; without spray (G0), spraying at 200 mg.L-1 (G200) and spraying at 400 mg.L-1 (G400), As for kaolin spray, they were sprayed in three levels (0, 500, and 1000 mg.L-1), which are denoted by symbols K0, K500, and K1000, respectively. Treatments were replicated three times (three transplants in experimental unit) at factorial experiment in a RCBD and thus number of transplants used was 162 transplants. The experimental results showed that liquid organic fertilizers at 3 ml.L-1(S3) significantly increased in plant height of 27.47 cm, highest leaf area of 20.51 cm2, leaf nitrogen content of 1.42 % and leaf phosphor content of 0.26 %. Results also showed that glutathione spray especially at 400 mg.L-1 (G400), showed significant superiority in increased in plant height of 27.60 cm, leaf area of 22.89 cm2, leaf nitrogen content of 1.44 % and leaf phosphor content of 0.30 %. Kaolin spray also affected, especially spraying at 1000 mg.L-1 and gave highest increasing of plant height of 26.37 cm, highest leaf area of 18.17 cm2, leaf nitrogen content of 1.41 % and leaf phosphor content of 0.25 %. Twice and triple interactions between study factors significantly affected in all studied traits.