BENEFITS OF MICROBIAL FERTILIZERS APPLIED AT DIFFERENT GROWTH STAGES ON OIL CONTENT AND QUALITY PROPERTIES OF PEANUT

Microbial fertilizer helps the plants grow healthy and stay strong due to including fertilizer and beneficial microorganisms. The purpose of the study was to determine the effects of microbial fertilizers applied in different growth stages on oil content, fatty acid composition and oil quality of peanut (Arachis hypogaea L.). The study was conducted in Osmaniye/Turkey in 2019 and 2020 according to RCBD arranged in split-plots design with 3 replications. The highest oil contents were observed in 150 cc da-1 (53.07%) and beginning bloom + full bloom (53.95%) treatments in studied years. For total unsaturated fatty acid compositions, the highest values were obtained in full bloom (79.49%) and 100 cc da-1 (79.99%) treatments. The highest O/L ratio were observed in full bloom and 100 cc da-1 treatments as 1.72 and 1.68, respectively according to mean of 2-year values. Similar results were seen in IV, and these treatments came forefront with the values 93.83 and 94.52, respectively. As a results of the study, it was concluded that (i) microbial fertilizers had the positive effects on oil content and quality parameters of peanut, (ii) the treatment 100 cc da-1 applied in full bloom may be the optimum selection.