Introduction

Corn is one of the most important staple crops in the world, playing a crucial role in global food production. Measuring corn yield accurately is essential for farmers to maximize their profits and optimize crop management practices. This article will provide a comprehensive guide on how to calculate corn yield so that you can make informed decisions that will ultimately benefit your farm or agricultural business.

Step 1: Choose an appropriate sampling area

When calculating corn yield, it’s important to select a representative area of your field for sampling. This could be a particularly uniform section of the field or an area that includes various soil types and topography. The chosen area should preferably be at least 1/1000th of an acre or approximately 43 feet long.

Step 2: Count the number of corn plants

In the selected area, count the total number of corn plants. Repeat this process in at least three different sections of the field to obtain an average plant count, which will provide a more accurate representation of the entire field.

Step 3: Determine ear-to-plant ratio

Not every corn plant will have an ear suitable for harvest. In each sampling section, count the number of plants with harvestable ears and divide this figure by the total number of plants. Calculate an average ear-to-plant ratio across all sampling sections.

Step 4: Determine ears per acre

Using the average ear-to-plant ratio, calculate the estimated number of ears per acre. To do this, multiply the average number of plants per acre by the ear-to-plant ratio.

Example:

1. Average plants = 30,000

2. Ear-to-plant ratio = .90

3. Ears per acre = (Average plants) x (Ear-to-plant ratio) -> 30,000 x .90 = 27,000 ears per acre

Step 5: Calculate the number of kernels per ear

Select a random sample of at least 10 harvestable ears from multiple areas within your field. Count the number of kernel rows on each ear and then multiply by the average number of kernels per row (typically found between two points of opposite row sides). Calculate an average number of kernels per ear from the sampled ears.

Step 6: Calculate corn yield

Now that you have the ears per acre and average kernels per ear, the final step is to calculate your corn yield in bushels per acre. Use this formula:

Corn yield (bushels/acre) = (Ears per acre) x (Kernels per ear) / (Kernel weight)

Kernel weight is typically around 90,000 for average-sized corn kernels. Be sure to adjust the kernel weight if your corn variety has larger or smaller kernels than usual.

Example:

1. Ears per acre = 27,000

2. Average kernels per ear = 432

3. Corn yield (bushels/acre) = (27,000 x 432) / 90,000 = 129.6 bushels/acre

Conclusion

Calculating corn yield is an essential part of managing your farm or agricultural business effectively. By following these steps, you’ll be able to accurately estimate your corn yield and make better-informed decisions about crop management practices that will ultimately improve your bottom line.