Source: University of Nebraska-Lincoln Extension, Institute of Agriculture and Natural Resources



Increasing input costs are forcing producers to evaluate every decision they make. With soybean seed costs on the rise, Nebraska producers in the Greater Quad County On-Farm Research group wondered if they could reduce their soybean populations while maintaining yield and saving money. On-farm research conducted in field scale, randomized and replicated farmer plots and at the South Central Agricultural Laboratory near Clay Center from 2006-2008 proved producers could.



Since 2006, planting rates of 90,000, 120,000, 150,000, and 180,000 seeds per acre have been planted in 12 irrigated soybean fields on 30-inch rows. Prior to this research, most of these producers usually planted 160,000-180,000 seeds/acre. The 90,000 low rate was determined based on UNL research recommending not to replant a hailed soybean stand if at least 90,000 plants/acre remained in the field.



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