Akademik Veri Yönetim Sistemi
Journal of Tekirdag Agricultural Faculty, cilt.21, sa.2, ss.416-428, 2024 (ESCI)
In the current study, the effects of root bacteria and chemical fertilizer applications that promote plant growth in greenhouse tomato cultivation on some yield and quality characteristics of tomato were investigated. Bacteria in the study were applied as two different groups, bacteria I (Stenotrophomonas maltophilia strain BY -44, Bacillus licheniformis strain HK -13 and Pseudomonas putida strain NK-12) and bacteria II (Pseudomonas fluorescens strain FC-42, Bacillus subtilis strain SK -26 and Rhizobium radiobacter strain SK -63). Parallel to the chemical fertilizer program, NK-12 and SK -26 strains, which have the ability to fix nitrogen when nitrogen -containing (NPK) fertilizers were applied to the plants, and BY -44 and SK -26 strains, which have positive phosphorus dissolving properties when phosphorus -containing (NPK) and pure fertilizers were applied, HK -13 and FC-42 strains, which can dissolve potassium when NPK fertilizers with high potassium content were applied were inoculated individually, without mixing. The experiment was established in a plastic greenhouse located in Hasyurt (FinikeAntalya) in 2017, according to the randomized plots trial design and was conducted out with 3 replications. In the study the number of tomato cluster, cumulative fruits, fruit size, fruit diameter, fruit hardness, average fruit weight, early yield, cumulative yield, fruit dry weight, total water-soluble dry matter, pH value of fruit juice and titrable acid amount were evaluated. As a result of the applications, it was determined that there was no statistically significant difference between the applications of bacteria I and bacteria II with chemical fertilizer application in terms of average fruit weight, fruit diameter, total water-soluble dry matter, pH value of fruit juice, fruit dry weight and fruit hardness. It was found that the effect of bacteria II application on fruit length was the same as chemical fertilizer application. In addition, it was observed that the effect of bacteria II application on the amount of titratable acid was statistically in the same group as chemical fertilizer application. It was determined that the highest values in cumulative fruit number, fruit size, early yield and cumulative yield parameters were obtained from chemical fertilizer application. In addition, plant growth promoting mechanisms (IAA, siderophore, ACC-deaminase and catalase) of bacterial stains used in applications were investigated. The highest IAA was found in Bacillus licheniformis strain HK -13 (61.24 mu g ml -1), the highest siderophore production was found in Pseudomonas putida strain NK-12 (36 mm). It has been determined that all of the strains have ACC-deaminase and catalase enzymes. The results showed that including bacterial applications in tomato cultivation would be effective in reducing the use of chemical fertilizers.