Effect of Different Soil Amendment Treatments on Quantitative and Qualitative Characteristics of Sugar Beet (Beta vulgaris.L) under Different Irrigation Regimes

Considering the importance of sugar beet in West Azerbaijan province and also the occurrence of water-deficit stress in different periods of plant growth, the aim of this study was to investigate the effect of water deficit stress on the quantitative and qualitative properties of sugar beet and also the effect of different soil additive treatments on modulating the effect of water deficit on sugar beet.

To investigate the effect of different soil amendment treatments on quantitative and qualitative characteristics of sugar beet under different irrigation regimes an experiment was conducted in split-plot design based on complete random blocks with three replications Was conducted in two places in Mahabad and Miandoab at 218 crop seasons.  Irrigation regimes at three levels, including 60, 120, and 180 mm evaporation from Class A evaporation pan, were assigned to the main plots, and soil amendment treatments including superabsorbent A200, mycorrhiza seed inoculation, livestock manure, and control treatment were assigned to sub-plots.

The results showed that the application of mycorrhiza and superabsorbent in Mahabad had the highest leaf relative water content, shoot dry weight, root yield, sugar content, sugar yield, white sugar content, and white sugar yield. Interaction analysis showed the highest leaf area index (4.11), leaf relative water content (87.78%), shoot dry weight (4.11 t/ha), root yield (77.96 t/ha), sugar yield (13.38 t/ha), sugar extraction coefficient (86.63%) and white sugar yield (10.71 t/ha) were assigned to irrigation regime after 60 mm evaporation and superabsorbent application, Also, in the irrigation regime after 120 mm evaporation, application of mycorrhiza and superabsorbent significantly increased the white sugar yield compared to the control in 60 mm evaporation irrigation regime.

 it can be concluded that use mycosis and superabsorbent in the soil is recommended to save water consumption and mitigate the effect of water deficit stress.