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 ...

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

We independently review everything we recommend. We may get paid to link out to retailer sites, and when you buy through our links, we may earn a commission. Learn more› By Colleen Hagerty Colleen ...

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 ...

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 ...

Having good soil is the No. 1 secret to successful gardening. One of the most important things you can do for your plants is give them a proper balance of the key elements they need to grow strong and ...

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 ...

One of the challenges we face as gardeners (and there are many) is knowing which fertilizer to use and how much to apply. This process is complicated by the fact that fertilizers come in a variety of ...

The Illinois Soil Nitrogen Test was recently studied to clarify the chemical nature of what the test measures and its relationship to microbial growth in soils, determining that the test does not ...

A reader seeks advice on helping her tired garden grow. Dennis G. of Santa Rosa asks: I was told by my neighbor, that I should have my soil tested because, after years of growing vegetables and ...