Integrated Crop Management News

A Call to Farmers to Assist with Soybean Yield Gap Project

February 1, 2016

Soybean production is expected to rise to satisfy the increasing demand for food, biodiesel and livestock feed, both in the United States and globally. It is critical to reduce the yield gap, which is the difference between the attainable crop yield, as determined by the interactive effects of weather, soils and genetics, and the actual crop yield attained by the producer. Read more about A Call to Farmers to Assist with Soybean Yield Gap Project

Breaking Down Resicore - Does It Pass the Test?

January 27, 2016

The first line of defense against herbicide resistance is using herbicide programs that include multiple herbicide groups effective against target weeds. When using premix products, this involves comparing the application rates of active ingredients in the premix versus rates applied with the stand-alone products. This step is needed to insure that the premix is providing an effective dose of the active ingredient. Read more about Breaking Down Resicore - Does It Pass the Test?

SCN Resistance Continues to Pay Twice in 2015

January 16, 2016

Resistant soybeans are vital for managing the soybean cyst nematode (SCN). But SCN-resistant soybean varieties can vary greatly in their agronomic performance and in the SCN control that they provide. ISU evaluates more than 150 SCN-resistant soybean varieties each year in experiments conducted throughout Iowa. The results of the 2015 experiments have been recently compiled and made available in print and electronically. Results show continued benefits of SCN-resistant soybean varieties in producing higher yields and allowing less SCN reproduction than susceptible varieties. Read more about SCN Resistance Continues to Pay Twice in 2015

Nitrogen Loss?

December 18, 2015

Really, it just had to rain large amounts in December. Seems we can’t get any relief from worrying about excess rain and impacts on nitrogen (N). The questions have already begun – what about fall 2015 fertilizer and manure N applications?

A few things to consider.

It is quite hard to make an estimate of losses for such an extreme event and time of the year. Following are factors to consider that will affect loss potential, including if N was applied and if so what fertilizer product or manure source. Read more about Nitrogen Loss?

Hindsight is 20/20: What Can Be Learned from 2015

December 17, 2015

As the saying goes, hindsight is 20/20; perfect vision. We often say “if we knew the weather, then we can provide the best recommendations”. Usually, we do not know the weather or we do not have the appropriate tools in place, so the questions remain unanswered. Now that we know the weather, the next important question is to determine what could have been done differently in 2015. This is an important part of understanding and evaluating production and environmental performance of our crop management decisions. Read more about Hindsight is 20/20: What Can Be Learned from 2015

Yield Gap Analysis: What Limited Iowa Corn and Soybean Yields in 2015

December 17, 2015

To evaluate how good corn and soybean yields were in 2015, farmers and agronomists compare their yields to those obtained in previous years. To answer why yields were higher or lower than past years, they develop hypotheses to explain factors that limited yields based on their own experiences, anecdotal evidence from neighbors, knowledge of crop growth and development, and weather patterns. Read more about Yield Gap Analysis: What Limited Iowa Corn and Soybean Yields in 2015

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