Anticipated Soil Nitrogen Supply for 2025’s Corn Crop

A cooler than average start to the growing season has added some uncertainty to post-plant nitrogen fertilization strategies for Ontario corn producers. Soil supply of nitrogen to the corn crop is likely lower than normal due to reduced N mineralization from both soil organic matter and manure, and the Maximum Economic Rate of Nitrogen (MERN) […]

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Anticipated Soil Nitrogen Supply for 2024’s Corn Crop

Field corn at 3 leaf stage, growing despite wet conditions.

Summary: Background: Throughout the growing season, microbes within the soil break down organic nitrogen contained in soil organic matter and crop residues and release it as plant-available ammonium.  This process is known as nitrogen mineralization. Nitrogen mineralization is favoured by warm soil temperatures with adequate soil moisture and aeration.  Excess moisture can slow mineralization or […]

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Ontario Corn Nitrogen Calculator

The Ontario Corn Nitrogen Calculator can be accessed by clicking the icon below. (this is the same tool previously posted on gocorn.net) Simple Summary The Corn Nitrogen Calculator Ontario Corn Nitrogen recommendations are derived from the Ontario corn nitrogen database which contains over 40 years of Ontario corn nitrogen yield response data. Current recommendations were […]

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Agronomy Guide For Field Crops – Corn – Fertility – Nitrogen

Nitrogen (N) Corn responds well to nitrogen, so adequate availability of nitrogen is critical to profitable corn production. Excess nitrogen adds unnecessary expenses and increases the risk of nitrate movement to ground water, poorer quality of surface water and production of greenhouse gases through nitrous oxide emissions. Insufficient nitrogen leads to nitrogen deficiency. Nitrogen deficiency […]

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