A warm and wet November-December, in connection with a warm spring, has led to conversion of the NH4+ molecule to the NO3- molecule, making it more available to leach or to be denitrified.
While 2015 will rightly be remembered as the year when supplemental nitrogen applications paid huge dividends in much of the Corn Belt, post-planting applications of sulfur often returned strong results for growers as well. The question many are asking is why do we need to add sulfur when it hasn’t been a problem for years?
Sulfur deficiencies are more common in grower fields for a number of reasons:
No other soil characteristic is more important in determining the chemical environment of plants and soil microbes than pH. The degree of soil acidity, expressed as soil pH, greatly influences the root uptake availability of many critical nutrients.
Effects of Soil pH
Establishing an on-farm testing protocol will help you evaluate new products and practices.
With warmer temperatures and spring rains right around the corner, now is the perfect time to refresh our understanding of the forms of nitrogen and how to reduce the risk of nitrate loss. The process of moving from the applied form to nitrate is nitrification.
Three goals for your nitrogen plan: maximize yield, optimize efficiency of his nitrogen budget, and be good stewards of the land.
Here are observations from Ron Lloyd, lead agronomist for 360 Yield Center and a farmer, sharing lessons learned about nitrogen management in the 2015 growing season.
What should you do if you missed your fall NH3 application? Read this article for tips