Influence of biological fertilization on the fruit quality of greenhouse tomatoes
Download PDF
DOI: 10.22620/agrisci.2016.20.012
Author: Kostadinov Kostadin, Pevicharova Galina, Filipov Stoyan, Mihov Krasimir
The experiment was carried out in steel-glass greenhouses at the experimental field of the Agricultural University - Plovdiv with Fado F1 tomato variety. Several variants were tested: 1. N44: P8: K52 + WuksalMacromix; 2. Agrobiosol + Osmo Bio garden + Biofa; 3. Lumbrikompost + Osmo Bio garden + Alga 600 PO 2; 4. Orgamax + Hemozim bio 5 N5P3K6 + Biofa; 5. Evrobio + Lumbrikompost + Hydrolysed proteins + Softgard; 6. Orgamax + Lumbrikompost + Hydrolysed proteins + Softgard; 7. Agrobiosol + Lumbrikompost + Hydrolysed proteins + Softgard; 8. Naturale + Lumbrikompost + Hydrolysed proteins + Softgard. The following planting scheme was applied: 40 + 85 + 70 + 85 + 40 X 42.5 cm in 28,000 plants / ha and food area per plant – 3.400 cm2. The plants were formed with one stem, the tops were pruned 50 days prior to the last picking. The studied organic fertilizers and their combined application influenced the biochemical content of the fruit to a different extent and in a different way. In phenophase mass fruitingthe highest lycopene content of the tomato fruits the variant fertilization with Evrobio + Lumbrikompost + Hydrolysed proteins + Softgard - 5.71 mg %, and the weight of the fruit at the variant fertilization with Agrobiosol + Osmo Bio garden + Biofa - 173.03 g, the excess over the conventional version N44: P8: K52 + Wuksal Macromix was 14.42%. The variants with the best indicators were the variants with organic fertilization by Orgamax + Lumbrikompost + Hydrolysed proteins + Softgard; Agrobiosol + Lumbrikompost + Hydrolysed proteins + Softgard and Naturale + Lumbrikompost + Hydrolysed proteins + Softgard, which significantly exceeded the control.