According to the invention, there is provided a novel soybean variety designated 900Y81. This invention thus relates to the seeds of soybean variety 900Y81, to the plants of soybean 900Y81 to plant parts of soybean variety 900Y81 and to methods for producing a soybean plant produced by crossing plants of the soybean variety 900Y81 with another soybean plant, using 900Y81 as either the male or the female parent.
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