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To survive long-term, rhizobia must learn to fight for valuable resources. This can have a negative impact on their ability for future nitrogen fixation.

One reason why many farmers do not inoculate their soybeans is because they feel that their fields already have high numbers of rhizobia that inoculating isn’t worth it. They feel that the rhizobia population has been built up sufficiently over years of soybean inoculation that enough are already present to provide adequate root nodulation. While … Read more

Percent of nitrogen supplied by n fixation

  Nitrogen fertilizer management is important for the success of any crop.  It is an expensive input, so growers are always looking for the best way to reduce application costs while still increasing yields. Nitrogen fertilizer is produced from natural gas, which makes the cost of the fertilizer vulnerable to changes in the supply and … Read more

Nitrogen Fixing Bacteria Form Root Nodules on Soybean Roots

Many Midwest farmers choose not to use an inoculant for their soybeans. They feel, due to the high number of nitrogen fixing bacteria already in the soil, that inoculating offers little benefit. However, after the record-setting drought of 2012, they may want to reconsider. Jim Beuerlein and Harold Watters, agronomists with the Ohio State University, … Read more

Soybeans

Barely half of U.S. soybean farmers are aware that the oil and protein level in their seed directly impacts their profits. That is according to a survey done by the United Soybean Board in 2010. Increasing yields is commonly seen as the driving force to higher profits, but this may be coming at the expense … Read more