Nitrogen Fertilization and Plant Growth Promoting Rhizobacteria Treatments Affected Amino Acid Content of Cabbage

This study was designed to determine the influence of a nitrogen fixing plant growth promoting rhizobacteria (PGPR) inoculation (seed coating and seedling dipping) and 6 doses of nitrogen (0, 40, 80, 120, 160, 200 kg ha(-1)) application on amino acid contents of cabbage. Coating and seedling dipping applications caused a significant increase in values histidine, glycine, thionin, arginine and alanine of cabbage. Highest glutamate, serine, asparagines and glutamine contents were obtained from 160-200 kg ha(-1) nitrogen dose applied plants. As a result, the use of bacteria treatments provides means of improving amino acid contents in cabbage.