Effect of Vermicompost Treatment on Oil Quality and Fatty Acid Composition of Peanut (Arachis hypogaea L.)

Abstract

This study examined the impact of vermicompost treatment on the oil quality and fatty acid contents of peanut (Arachis hypogaea L.) in 2020-2021 under the ecological conditions of Osmaniye. The research was designed in a randomized complete block design with three replications. Peanut variety NC 7 was used in the study. Vermicompost was applied in nine different doses. In the research oil content, linoleic acid, oleic acid, stearic acid, palmitic acid, arachidic acid, behenic acid, iodine value, and O/L ratio were examined. According to the results, it has been found that oil content varies between 48.38% (T9) and 50.43% (T5). The ratio of oleic acid was recorded between 56.90% (T9) and 59.42% (T5) while the ratio of linoleic acid was between 21.15% (T9) and 23.59% (T8). The lowest palmitic acid value (8.87%) was recorded for the T8 treatment whereas the highest palmitic acid value (9.21%) was obtained from the T6 treatment. The lowest O/L ratio (2.42) was obtained from the T8 treatment while the highest O/L ratio (2.77) was obtained from the T4 treatment. The iodine value varied between 85.56% and 90.28% for T9 and T5 applications, respectively. The findings indicate that under the ecological conditions of Osmaniye, soil and leave treatments of vermicompost show a significant increase in oil content, oleic acid, linoleic acid, and iodine values of peanut.