Abstract:
Multifunctional microorganisms can significantly affect root development and growth
of upland rice, as seedlings may provide no grain yield from the crop. The objective
of this study was to determine the effect of single and combined microorganisms on
root and shoot development of upland rice seedlings. The experiment was set up in a completely randomized design with treatments consisting of upland rice seeds
treated with simple and combined multifunctional microorganisms (control (treatment
without microorganisms), Serratia marcescens (BRM 32114), Azospirillum brasilense
(AbV5), Bacillus sp. ( BRM 63573), Trichoderma koningiopsis (T-26) and the
combination of all those reported). Bacillus sp. was greater (35%) in root length
compared to the control. In the surface area of the roots the control is highlighted. In
diameter, ABV5 presented a value (46%) higher than the control. In the length and
volume ratio, all microorganisms were greater than 25.66% compared to the control.
In the root volume BRM 63573 increased (50%) compared to the control. It can be
concluded that multifunctional microorganisms improved root length, root surface
area, diameter, length/volume ratio and root volume, providing better root
development.
