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Yield Challenge

Official Rules

Any Illinois soybean producer (owner-operator, tenant or tenant landlord) who produces soybeans in Illinois is eligible to enter.

A producer may register more than one entry per category. Each entry must be registered independently. A producer with more than one entry will be eligible for only one award per category entered. For example, a producer who enters and wins the 100-Bushel Challenge will be exempt from winning the Regional Contest. Or a producer who enters the Regional Contest will be exempt from winning both 1st and 2nd place. However, a grower can enter the Regional Contest and Side-by-Side and win in each category, but only one place in each category.

There are no restrictions on management practices applied however genetic (variety) comparisons aren’t allowed. ISA reviews intentions and determines eligibility of all entries.

In 2018 these will be an intention form online to indicate your intention to participate.

There continues to be NO ENTRY FEE. The harvest entry form is due on November 15. However, if you are contemplating entering, please complete the interest form by clicking on the button below.

The field entered must be one continuous area.

In the 100-Bushel Challenge and Crop Region Contests, generally only one plot will be harvested. And in the Side-By-Side Contest, two plots will be harvested. Field areas need to be larger than the harvest areas. A minimum of two acres must be harvested per plot and the area of each plot needs to be measured.

Plot length and width will be physically measured. Plot width will be measured from the first harvested row on the left to the first unharvested row on the right (to assure that inclusions of the equivalent of one-half the average row width beyond the outside harvested row on each side). The measurements should be made by a third-party witness. Family members, employees or promoters aren’t allowed to make plot measurements.

All measurements must be made with a steel or fiberglass tape or measuring wheel and recorded in feet. Each measurement should be recorded on the proper Harvest Entry Form. If a whole field is harvested and entered in the contest (and due to the irregular shapes and dimensions of whole fields), the acreage determination for the whole field will be accepted from the County FSA Office as determined from official USDA aerial photographs.

A third-party witness, such as such as a local FFA or ag club advisor, crop insurance agent, ag lender, university personnel or other impartial witness (approved by the committee) must be present to supervise measuring, harvesting and weighing of the yield for each entry. For the Side-by-Side and Crop Region Contests, a single witness is required. For the 100-Bushel Yield Challenge, two witnesses are required - with one being provided by ISA.

Before the plot is harvested, the person supervising the harvest must ensure the entrant has emptied the combine, cart, wagon or truck, so no soybeans have been left in it. Carts, wagons and trucks will be weighed are empty on a certified scale to record tare weight. Harvested soybeans may be weighed in a weigh wagon or on a certified scale.

A third-party witness must be present when harvesting the two-acre area for the contest. The witness must verify with a signature that all harvest data is correct on the proper Harvest Entry Form. A representative sample must be taken immediately for determining moisture content. For the 100-Bushel Challenge, grain must be weighed on a certified commercial scale and the original scale ticket submitted with the 100-Bushel Harvest Entry Form and signed by both verifiers.

Yields will be calculated based on No. 1 grade soybeans and will consist of the weight of harvested soybeans, corrected to 13% moisture and converted to bushels per acre. Percent moisture must be measured. If you are measuring in the field take an average of three moisture samples. If you weigh at a commercial scale, the scale ticket will report percent moisture. Foreign matter does not need to be determined.

To complete your entry in the Yield Challenge, download the appropriate Harvest Entry Form. Complete the form, scan and email it to Please complete all the information requested in the Harvest Entry Forms. This information helps us recognize your production practices and those treatments that contributed to yield. Failure to complete the form can lead to being disqualified. Harvest forms are due no later than November 15, 2018.