New for ’12: trend-adjusted yield

You’ll have another choice to make when you sign up for crop insurance on or before March 15. The Trend-Adjusted APH Yield Endorsement for both corn and soybean insurance policies has been approved by the Federal Crop Insurance Corporation Board. This option is available in all of Iowa’s counties and most of the major crop production regions in the Corn Belt beginning with the 2012 crop.

New for ’12: trend-adjusted yield

You’ll have another choice to make when you sign up for crop insurance on or before March 15. The Trend-Adjusted APH Yield Endorsement for both corn and soybean insurance policies has been approved by the Federal Crop Insurance Corporation Board. This option is available in all of Iowa’s counties and most of the major crop production regions in the Corn Belt beginning with the 2012 crop.

Basically, this new endorsement will convert your actual APH, which is the average yield over past years, into your new approved yield for 2012. Corn yields trend upward about 1.5 bushels per year, and soybean yields trend upward about 0.4 bushels per year.

Yields have been trending upward because of improved production practices and improved crop genetics. However, crop insurance policies have based the indemnity payment not on what your trend yield would have been, but on the average of the past 10 years of crop yields on that farm. Thus, indemnity payments are calculated on the past and not the present.

Key Points

Trend-adjusted APH yield endorsement is a new option for crop insurance in 2012.

Endorsement is available for both corn and soybean crop insurance policies.

Trend-adjusted APH will improve yield accuracy; talk to your insurance agent.


This new trend-adjusted endorsement has not had premiums rated yet. The higher approved insured yield will prove more relevant than the historic yield average. With competitive premium rates, insured farmers might look at increasing their coverage or moving to a lower level of percentage coverage to save on the premium, yet with a higher approved APH at minimal cost.

Intent of this new option

When you meet with your crop insurance agent, be sure to ask about the Trend-Adjusted APH Yield Endorsement.

The new endorsement is available for all APH-based yield and revenue options, and is elected and applied to a county and the corn and soybean crop. Policies will be available over 820 counties for corn and over 880 counties for soybean policies nationwide. The intent of the new endorsement is to improve the accuracy of the estimate of future insured yields, and to allow accurate coverage elections to be made against expected crop production.

In its simplest form, a farmer’s APH is the average of at least four and up to 10 years of actual historic yields. The APH then serves as an estimate of future yields, and the farmer elects insurance coverage annually on a portion of the expected yield to indemnify either expected yields (using a yield protection insurance product) or expected revenue (revenue protection products).

Many farmers feel that the APH yields used for crop insurance coverage do not accurately reflect their current yield potential. The main reason is due to improved seed and management practices. This new endorsement provides a factor for each crop and each county. This factor is equal to the estimated annual increase in yield based on county average yields compiled by USDA’s National Agricultural Statistics Service each year.

Yield accuracy will improve

With this new trend-adjusted option, the yield reported for the farmer’s APH history is adjusted upward by the trend adjustment factor for each year the farm’s yield surpassed the county’s yield. If a farmer has substituted a yield in any of the years in their APH history equal to 60% of the county trend yield, the trend adjustment is applied to the substitute yield.

An example would be a farmer who has 10 years of yield history for corn in one insurance unit. Assume the trend adjustment factor in the county where the unit is located is 2 bushels per acre per year. So 2 bushels are added to each yield for every year since the APH yield history was recorded. In this example, corn was planted continuously over 10 years (2002-11), which is not always true for many units.

Note that the adjustments in the table range from 2 bushels for the past year to 20 bushels for a yield that was recorded 10 years ago. The adjusted APH yield is now the average of the adjusted yields, 174-bushels-per-acre average instead of 163-bushels-per-acre reported yield. By electing the Trend-Adjusted APH Yield Endorsement in 2012, the yield of 174 bushels per acre will be used to determine crop insurance coverage.

What if an insured field doesn’t have actual yield records for each year?

In some cases the land in the insurance unit may not have an actual yield for every year, perhaps because no production records were available or a variety of other factors. The unit must have an actual yield for at least one year out of the last 12 to be eligible for the Trend-Yield Adjustment Endorsement. If actual yields are available for fewer than four years in the last 12, the annual trend adjustment factor is reduced.

For example, if a farmer has three years of actual yields, the adjustment is increased by only 75% of the trend factor; for two years of actual yields, yield potential is increased by 50% of the trend factor; and for one year of actual yields, the adjustment is for only 25% of the trend factor.

If the yield adjustment factor for the county is 2 bushels per acre, the actual adjustment would be only 1.5 bushels when only three years of actual yields are available, 1 bushel when two years are available, and 0.5 bushel when only one year of actual yields is available.

The premium impacts for 2012 will depend on the projected price and volatility factors determined next February. Final base rates are being determined by USDA’s Risk Management Agency, but base rates per bushel will not be affected by the trend endorsement.

Johnson is an Iowa State University Extension farm management specialist.

For farm management information, go to ISU’s Ag Decision Maker at www.extension.iastate.edu/agdm and ISU Extension farm management specialist Steve Johnson’s site, www.extension.iastate.edu/polk/farmmanagement.htm.

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This article published in the December, 2011 edition of WALLACES FARMER.

All rights reserved. Copyright Farm Progress Cos. 2011.

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