The effect of microbiological fertilizers on the leaf chlorophyll and carotenoid pigments and the seed protein and oil content in introduced and local cultivars of soybean (Glycine max L.) planted as a repeat crop was this research’s focus for investigation. Based on the analysis, the microbiological preparation Rhizotorphin enhanced the leaf chlorophyll and carotenoids by 8.3%–16.7% and 1%–23.7%, respectively, as well as depending on the cultivar. The microbiological fertilizer Bioazot increased the leaf chlorophyll and carotenoids by 1%–18.7% and 1.04%–19.7%, respectively. The soybean grain’s protein content also significantly rose with the influence of biofertilizers. However, the highest grain protein content was evident in the introduced cultivar Arleta (40.47%) and local cultivars Ehtiyoj (39.38%) and Xotira (38.02%) treated with biofertilizer Bioazot. A negative relationship emerged between the seed protein and oil content in analyzing the seed oil characteristics in soybean cultivars under the influence of microbiological preparations. The soybean cultivars observed with a higher protein content resulted from the influence of microbiological fertilizers but showed a reduced seed oil content.
Soybean (G. max L.), cultivars, microbiological fertilizers, Rhizotorphin, Bioazot, chlorophyll, carotenoids, oil, protein, oil content
Results revealed microbiological fertilizers had a significant positive effect on the physio-biochemical processes of soybean (G. max L.). The microbiological fertilizer Bioazot seed treatment had a considerable positive effect on the leaf chlorophyll and grain protein content of the cultivars Ehtiyoj, Xotira, and Arleta.