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Öğe The effects of biofertilisers on soilless organically grown greenhouse tomato(Int Soc Horticultural Science, 2017) Dasgan, H. Y.; Cetinturk, T.; Altuntas, O.In the present study, greenhouse tomato ('Jaledo') was grown with organic nutrition by the inoculation of some biofertilizers under the soilless cultivation rules. The treatments were three different biofertilizers; 1) mychorrhiza, 2) vermicompost, 3) fermentation microorganisms (EM), and 4) control. The experiment was carried out in the glasshouse during the spring cultivation period under Mediterranean climate conditions. The growing medium was a mixture of peat:perlite in the ratio of 1:1. The constant nutrition in all treatments with the certified organic fertilisers was used to feed the plants beside the biofertilizers. Some plant growth parameters such as plant height and leaf number were similar in the treatments. The tomato yield was the highest in vermicompost, it was 8.3% higher than the control plants. Mychorriza treatment also increased the yield by 2.5%, however, the fermentation microorganisms (EM) decreased the yield by 12.4%. The fermentation bacteria (EM) may compete with the plant for available nutrients in the root medium. Mean fruit size and fruit volume was higher in vermicompost and mychorriza. Total soluble solids (brix) and titradible acidity were higher in the EM. At the end of the experiment, EC inside the growing medium was measured and the biofertilizers, especially mychorriza, decreased the EC, that could be important to prevent salinization in root medium during growing. Leaf nutrient analysis showed that the tomato plants were adequately fed under the experimental conditions, in some cases, the advantages of biofertilizers was seen, for example the leaf Na concentration was the lowest in mychorriza treatment. The results showed that as sustainable approach, the greenhouse vegetables can be produced under the rules of soilless cultivation in organic growing medium by the combination of organic nutrients and the biofertilisers like vermicompost and myhcorriza.Öğe THE IDENTIFICATION OF THE RESISTANCE LEVELS OF FUSARIUM OXYSPORUM F. SP. RADICIS - LYCOPERSICI AND TOMATO YELLOW LEAF CURL VIRUSES IN DIFFERENT TOMATO GENOTYPES WITH TRADITIONAL AND MOLECULAR METHODS(Corvinus Univ Budapest, 2019) Ates, Colak A.; Fidan, H.; Karacaoglu, M.; Dasgan, H. Y.Fusarium oxysporum f. sp. radicis-lycopersici (FORL) causes Fusarium crown and root-rot diseases and Tomato yellow leaf curling virus (TYLCV, Israel, Mild, Sardinian strains) infection leads to low yield and poor quality fruits, which causes important economic losses in tomato growing areas. In this study, previously developed molecular markers for FORL and TYLCV were used with 418 tomato genotypes which have characteristics of high yield, quality fruit and resistance to abiotic stresses. 62 tomato lines were obtained from Cukurova University (CU), 196 and 160 of tomato lines were generated from Western Mediterranean Agricultural Research Institute (BATEM) and private sector, respectively. All genotypes were tested with classical and molecular methods where species specific resistance RAPD and SCAR(Frl) primers for FORL, CAPS and Co-dominant SCAR primers for TYLCV resistance were used. Analyses revealed that 102 tomato genotype are resistant to FORL, 46 and 35 of plant genotypes contain TY3 and T Y1 loci respectively. Three genotypes from BATEM and 4 genotypes from private sector contained the 3 target genes (FORL+TY1+TY3), however, none of the tested CU tomato genotype was resistant to the 3 target genes. Furthermore, yield and some fruit quality characteristics of 7 tomato lines which were resistant to both diseases were determined in molecular and classical tests.Öğe The optimization of nitrogen dosages on cucumber plants grown in greenhouse(Int Soc Horticultural Science, 2017) Altuntas, O.; Dasgan, H. Y.In recent years, the intensive usage of either pesticides or overdose of fertilizers caused both an increase in plant production and showing up some products which would threaten human health. The chemicals (pesticides, fertilizers, etc.) which are being used in agricultural production, have made their potential negative influence both on human and society health evident. For that purpose, as a new mode of production Organic Farming manifested itself. In organic fresh vegetable growing, one of the most important topics which still needs to be studied is plant nutrition. The most important deficiency in plant nutrition is nitrogen nutrition. Nitrogen is the most commonly used plant nutrient element in production. Nitrogen sources that are being used in organic production are limited and their pure nitrogen contents are weak. Cucumber, is the second most grown vegetable just after tomato in greenhouses in Turkey. It is consumed both winter and summer and it is also a vegetable which is on the market the whole year. Besides, because of its long vegetation time and its tendency of making much vegetative texture, it is one of the most nitrogen using vegetables. This study was carried out in the greenhouses of Cukurova University, Karaisali Vocational College in Adana, in order to determine the optimum nitrogen dosage to be applied in organic cucumber production under greenhouse circumstances of the spring season. For this purpose, a common organic certified fertilizer was applied as the nitrogen source contending 10.21% pure nitrogen was used. The nitrogen doses of 0, 0.5, 1.5, 2.5 and 3.5 kg ha(-1) were applied, in total six applications. During the trial, in order to investigate the effects of different nitrogen dosages on plants growth parameters were measured. Also, nutrient element contents of leaves were analyzed, fruit physical characteristics and the yield values were measured. Consequently, it was determined that top two nitrogen dosages (2.5 and 3.5 kg ha(-1)) increased the plant growth. In terms of the yield, it is concluded that the dose of 1.5 kg ha(-1) would be enough for increasing this parameter.Öğe The organic nutrition on hydroponically grown greenhouse melon(Int Soc Horticultural Science, 2017) Dasgan, H. Y.; Yucebilgic, A.; Altuntas, O.Greenhouse melon was grown by organic nutrition in 1:1 cocopeat-perlite mixture (v/v). The licensed fertilizers in organic farming were the treatments of the experiment. Three different organic fertilizers were compared to each other and a control. The treatments with their trade names were; 1) Biofarm (liquid), 2) Complex (liquid), 3) Pattrone+Chamlica (powder), 4) Control. The control plants were fertigated by the conventional nutrient solution that was prepared by synthetic inorganic fertilizers. The experiment was carried out in the glasshouse during the spring cultivation period under Mediterranean climate conditions. Plant growth parameters (plant height, total shoot fresh weight, number of leaves plant(-1), stem diameter) were not significantly affected by the treatments. However, melon yield was higher in the organic fed plants in comparison to control ones. The melon plants fed with complex fertilizer produced the highest yield. It was 74% higher than the control. The other two organic fertilizers, Biofarm and Patrone+Chamlica, produced 17 and 15% higher melon yields than the control, respectively. Melon fruit total soluble solids (TSS) and fruit mean weight were similar in the different organic fertiliser's fed plants and higher than the control.
