Add Yahoo as a preferred source to see more of our stories on Google. Organic nitrogen is important for plant growth, but too much of it can cause a range of problems. Over-fertilization, improper ...

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 ...

Your plants need nitrogen in order to thrive. Here are some simple ways to add it to your soil. Nitrogen is a critical element for the plants growing in your garden. They need nitrogen to help them ...

Several firms across Europe are developing and launching new technologies for measuring the nitrogen requirements of arable crops. Improving nitrogen use ...

With some uncertainty about how much residual nitrogen is in soils, growers are being urged to consider getting fields tested ...