Soybean variety evaluation Narrabri, NSW 2019–20

Abstract

Key findings •The unreleased soybean line NK94B-25 produced the highest yield (2.67 t/ha) followed by two other unreleased lines T171A-2 (2.49 t/ha), 17-410 (2.49 t/ha), compared with the commercial varieties Richmond[PBR] (2.48 t/ha), and Moonbi[PBR] (2.33 t/ha). •The variety Moonbi[PBR] was the earliest to mature, reaching 95% physiological maturity (P95) at 131 days after planting (DAP). There was no significant difference between the four other varieties in the time taken to reach maturity (138–139 DAP). •Grain protein concentrations were acceptable for all varieties, with the highest being 17-410 at 41.5%, Richmond[PBR] at 41.3% and NK94B-25 at 41.1%. •Richmond[PBR] and 17-410 produced in largest seed size (19.3 and 19.2 g/100 seeds, respectively) followed by Moonbi[PBR] (18.5 g/100 seed), T171A-2 (17 g/100 seeds), and NK94B-25 (16.7 g/100 seeds). •The grain yield and quality results indicate that the soybean varieties tested are adapted for growing in this region in an irrigated cotton farming system. No diseases or lodging developed during the experiment.