Nitrogen is often the most limiting nutrient in growing plants. When deficient, plant yields and quality are reduced. However, excessive nitrogen applications could cause concerns in water quality and ...

Nitrogen levels in 2022, a year that had both wet and dry weather, were more typical, in contrast to 2021, when it was extremely dry, an Agvise Laboratories Inc. staff member says. John Breker, soil ...

Organic nitrogen is important for plant growth, but too much of it can cause a range of problems. Over-fertilization, improper composting, or runoff from nearby agricultural areas can all contribute ...

There are a few items in post-harvest test results that look foreign to those viewing them for the first time. These are the ...

Before applying fertilizer or any other soil amendment, it's a good idea to see what the soil already contains. That way you ...

For about $15, you can get a down-and-dirty soil analysis from your state university’s agricultural lab – including results for phosphorus, potassium, pH (acidity), and organic matter content. But you ...

One of the essential nutrients for vigorous crop production is nitrogen. Yet most routine tests done in commercial soil testing labs do not measure available nitrogen in the soil. Soil scientists ...

AMES, Iowa – The soil fertility tests farmers have used for decades to measure nitrogen levels don’t account for the vast majority of the nitrogen in soils, so Iowa State University scientists helped ...