Soybean quality composition is an important factor in several soybean marketing opportunities. For example, contracts for identity preserved soybeans require the harvested crop to attain compositional standards. If those standards are not met, the grower faces stiff penalties, including crop rejection. Typically, the contract crop is harvested and stored in a separate identity preserved bin. Then, the beans are sampled and sent for laboratory analysis. At the lab, bench-top near infrared spectrophotometry (NIRS) analysis is the current industry standard to determine whole-bean and milled oil and protein content. Lab results are not available to farmers for six weeks to several months after harvest. This lack of timely crop quality information reduces the incentive for farmers and buyers alike to expand acres of high quality soybeans for sale to identity-preserved soybean buyers, processors, and end-users.
PerkinElmer now offers an industrial grade NIRS machine (DA 7350) that mounts onto a combine. Their NIRS instruments have been used for many years in industrial food processing plants for in-stream composition measurements. The combine-mounted PerkinElmer NIRS instrument can conduct analysis of soybean crude protein and oil content, moisture, and other components “on the fly,” allowing farmers to interpret quality as the crop is being harvested. Detecting composition during harvest would greatly improve producers’ information about harvested material. The information could support decisions about segregating loads, enhance transparency of loads to processors, and reduce crop rejection. All of these would support farmers selling their crop at high prices or premiums.
The Farmers’ Independent Research of Seed Technologies (FIRST) trials program is organized to deliver yield performance information for Minnesota and midwestern farmers. FIRST also has funding from the United Soybean Board (USB) to report soybean composition for varieties in the trials.
We propose to collect data with a PerkinElmer on-combine instrument while harvesting FIRST trial plots. We will mount a PerkinElmer NIRS on a Case-IH 1640 plot combine operated by Southern MN FIRST. The combine is already equipped with a weight and moisture scale, and harvests several thousand individual soybean plots annually from multiple locations. As part of USB-funded research, a soybean sample is collected from each variety at harvest and sent to collaborator Seth Naeve’s lab at University of Minnesota, where they are analyzed for crude protein and oil using a bench-top PerkinElmer NIRS unit.
We will report on the comparison of composition data collected a) with the combine-mounted NIRS from soybeans as they are harvested and b) from those same soybeans collected and sent for analysis in the lab at UMN. The genetic variability in the FIRST trials will provide an excellent demonstration to educate producers’ on the potential for new marketing strategies and decisions supported by the in-field quality data availability.
The project is anticipated to last three (3) years, however the funding requested is for June 2023 through April 2024.