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Deep planting of soybeans results in more time needed for emergence, thus longer exposure to soil insects and disease pathogens. Ideal planting depths range from 1.0 to 1.5 inches. While some varieties will emerge from up to 4 inches, other varieities will not emerge well from depths greater than 2.5 inches even with high quality seed. Larger seeds will not necessarily emerge from greater depths because the large colytedons experience more resistance to emergence than colytedons of small seed. Small seeds may not have sufficient reserves to permit emergence from deep planting. |