As corn’s fifth micronutrient, boron is often an afterthought. Boron’s impact is most felt when it’s not available. Deficiencies or a complete absence of boron can cause stalks to become barren, ears to twist and yield to suffer. Monitor your crop for these symptoms and take action if a deficiency is determined to be present.

An accurate soil map is important when efficiently managing fields and soil fertility levels. Grid sampling is an effective soil sampling method to use when fields have a high number of soil types or textures, and when previous cropping and management practices have changed or are unknown.

Soil acidity is one of the primary fertility issues that can limit crop growth. High levels of acid can reduce nutrient availability, restrict root growth and increase the toxicity of some elements. Soil acidification occurs naturally as the result of rainfall, plant growth, breakdown of organic matter and the application of ammonia fertilizers. Applying lime reduces soil acidity and is a source of calcium (Ca) and magnesium (Mg).

Crop harvest removes valuable nutrients from the soil. Understanding the amount of nutrients removed is crucial to understanding how to fertilize for the highest yield potential next season. With high input costs, it can be tempting to skimp on nutrients to save cost. Over time, however, this approach can reduce yield potential and profitability.

Fair weather along with an early harvest provides conditions conducive for growers to fall-apply manure to their fields. Before applying manure, review your nutrient management plan to determine the appropriate amounts of nutrients needed to improve success in selected fields.