Use of Starter Fertilizers in Corn Production

Starter fertilizer in corn production has traditionally been recommended for fields with cool soil temperatures, including exceptionally early planted or no-till fields, those with high residue cover or fields in northern states. In cool soil conditions, starter fertilizer placed near the developing seed provides easily accessible nutrients until soil conditions improve and an adequate root system is established. Starter fertilizer has also been recommended for fields with low phosphorus levels, and research studies have proven the value of this practice. However, some growers seeking to exploit current grain price opportunities are evaluating whether starter fertilizer can play a more prominent role in increasing corn yields. This Crop Insights will discuss starter fertilizers, their traditional role in corn production, and whether starter may have a role beyond historical uses.