Placing fertilizer in-furrow with the seed
Seed bed utilization: The more scatter there is between seed and fertilizer in the seed band or row the more fertilizer can be safely applied. The type of planting equipment and seed opener influences the intimacy of seed-fertilizer contact. The concept of “seed bed utilization” has been used to address this factor. SBU is simply the seed row width divided by the row width, i.e., proportion of row width occupied by seed row. The wider the seed row for a specific row width the greater the SBU. As SBU increases so does the safe rate of in-furrow fertilization.
The information presented here is rather conceptual and general in nature. A detailed listing of recommendations and guidelines is beyond the scope of this brief publication. For more specific information regarding safe rates of in-furrow fertilization for specific crops and conditions one should refer to university Extension resources, and/or consult a knowledgeable crop adviser or industry professional.
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