Published in Scientific Papers. Series B, Horticulture, Vol. LXIII, Issue 1
Written by Gheorghita HOZA, Mohammed MOHAMMED JASIM, Gabriela NEATA, Maria DINU, Alexandra BECHERESCU, Ionuț Alexandru APAHIDEAN, Hadi HOOBI SHALAL
Experiment was carried out in experimental field of Faculty of Horticulture from Bucharest in 2018, in a polyethylene tunnel. Biological material used was Romanian tomato cherry variety, named Ema de Buzau. Two amino acids were used, arginine and cysteine, in 2 concentrations, 200 ppm and 400 ppm, which were applied by spraying on plants once a week for 4 consecutive weeks, and the plants were conducted with 1 and 2 strains. Research results showed that most parameters were influenced by use of amino acids. Thus, stem diameter in the lower part was higher in plants treated with cysteine 200 ppm (1.11 cm) and cysteine 400 ppm (1.23 cm) compared to control 0.94 cm. Plant height was more influenced by arginine, being of 246.85 cm (at 400 ppm) and 241.5 cm (at 200 ppm) and by cysteine at 400 ppm (243.45 cm) than cysteine at 200 ppm. Photosynthesis and chlorophyll content were positively influenced by application of amino acids at all 4 concentrations compared to control. Number of stems didn’t influence significantly these parameters. Average fruit weight was insignificantly influenced by the use of amino acids and poorly influenced by the number of stems. Plants with 2 stems had fruits of 5.8 g compared to 5.89 g at plants with 1 stem. Production per plant was higher due to application of amino acids arginine and cysteine at doses of 400 and 200 ppm, compared to control. Stems number had a great influence on total production, ranging from 2099.28 g/pl. at plants conducted with 2 stems compared to 864.23 g/pl. at those conducted with 1 stem.
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