nitrogen

 

Iowa State University (ISU), the USA’s leader in agricultural modeling, and FluroSat, a world leader in agronomic decision support and remote field sensing, have announced their collaboration through a research project to advance predictability of N management.

The collaboration is structured around the APSIM model as both FluroSat and ISU are using this crop simulation framework. ISU as a member of the APSIM Initiative, brings expertise on cropping systems modeling and experience on modeling nitrogen in US environments. FluroSat brings advanced remote sensing capabilities and analytics at the sub-field level. With ISU’s knowledge and resources, the goal is to advance the science of informing in-season Nitrogen management decisions

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 develop a new test that yields more accurate results by using soil biology.

Several field days are happening across the state throughout the month of June. Hear from our faculty experts along with other faculty and Extension and Outreach specialists about a variety of crop and pest related topics.

June 20 at 9:00 am: Northern Research Farm Summer Field Day - Kanawha, Iowa

A season review from ag specialists Matt Schnabel and Brandon Zwiefel
Sulfur use - Dr. John Sawyer
Weed control - Dr. Bob Hartzler
Cereal rye for seed - Dean Sponheim & Jamie Benning
Crop production issues - Paul Kassel & Angie Rieck-Hinz

June 27 at 1:00 pm: Northeast Iowa Agricultural Experimental Association Annual Spring Field Day - Nashua, Iowa

Crop weather outlook - Dr. Elwynn Taylor
Strip till and no till research - Dr. Mahdi Al-Kaisi
Nitrogen fertility - Dr. John Sawyer
Insect scouting and tips - Brian Lang

Honors students pursue individualized programs designed to enrich their educational experiences. As a part of their program, each Honors student plans, develops and completes an individual project. The results of those efforts were put on display at the Spring 2018 poster presentation of Honors projects held April 25. Participating students from Agronomy included:

Savanah Jones: Stress tolerance gene identification in Arabidopsis

Brittany Kirsch: Performance of a small, field-scale wetland

Samantha Reicks: Sulfur fertility in soybeans

Aimee Schulz: Inbreeding depression in wild maize populations subject to habitat degradation in southwest Mexico

Forecast and Assessment of Cropping sysTemS (FACTS; 2015-present)

FACTS is an ongoing project developed to forecast and evaluate real-time soil-crop dynamics in specific ISU fields. Predictions and measurements will be frequently updated as new information becomes available during the growing season. 

What we do:

by Ellen Bombella, College of Agriculture and Life Sciences Communications Service

Sotirios Archontoulis' curiosity about crops, soil and weather started at a very young age when he was growing up in Greece. He remembers going to the fields with his father, who was a farmer, in the heat of the afternoon to see if the crops needed watered.

"I thought to myself, there has to be a better way than this," Archontoulis said. "I was motivated to pursue agronomy because the farmers had to make important decisions without help."

Cover Crops and Nitrogen Retention

Cover crops are an integral component of cropping systems because they grow in the fall and early spring - that is, times when the soil would not have a growing corn or soybean crop. At present, cover crops are grown to benefit soil quality and reduce nitrate loss. In the future, ongoing research at ISU promises to identify additional benefits such as weed suppression. Cover crop acres are growing exponentially.

Dr. John E Sawyer
Professor

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