The Effect of Inoculation with Various Nodosity Bacterial Cultures Collected from Samsun Province on Yield and Nitrogen Coverage of Soybean (Glycine max L.) in the Greenhouse and Field Conditions
BAYRAKLI, Betül | ÖZYAZICI, Gülen | ÖZYAZICI, Mehmet Arif
The study was conducted to determine the effects of Rhizobium japonicum strains isolated from the nodule samples collected from soybean cultivated fields in Samsun province on growth and nitrogen content of soybean plants. The nodule samples were collected from a total of 94 different fields in Çarşamba and Terme districts and Dikbıyık town of Samsun province where soybean cultivation is intense. The isolation studies and greenhouse experiments were performed in the laboratories and greenhouses of the Soil, Fertilizer and Water Resources Central Research Institute (TGSKMAE). Field experiments were carried out in 9 different locations in Samsun province with isolates TGAE.Sam.58-a and TGAE.Sam.60 - c obtained from greenhouse studies and with TGAE.S.543/335/1089/649 strain from TGSKMAE collection. According t o field experiments, all strains were found to be effective in terms of grain yield, grain nitrogen content and nitrogen values removed with the grain, while the most effective strains were determined to be TGAE.Sam.60-c and TGAE.S.1809. As the average of the locations, in the plots inoculated with bacteria, the N values removed with soybean grain was between 23 -30 kg da-1, while in control plots it was between 12-14 kg da-1. The use of TGAE.Sam.60-c and TGAE.S.1809 strains has been recommended for the areas of Samsun province where soybean farming is conducted.
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