If a farmer was estimating yield for a grain crop, what variables would he or she need to make a calculation?

A. cost of herbicide per ft2, seeding rate, estimated storage space cost of herbicide per ft, 2, , seeding rate, estimated storage space

B. standard kernel weight, acres of planted field, insurance price standard kernel weight, acres of planted field, insurance price

C. cost of seeds per ft2, acres of planted field, fertilizer weight cost of seeds per ft, 2, , acres of planted field, fertilizer weight

D. acres of planted field, kernels per ft2, standard kernel weight

Note: Here is the resource to finding the answer -> Estimating yields and calculating yield involve numerous equations, depending on the crop in question, and many different methods exist. For grain crops, a farmer could count the number of viable kernels in a square foot. This number would then be multiplied by a standard 1,000 kernel weight. Finally, this number should be multiplied by the number of acres on a farm. One of the most crucial measurements a farmer needs to consider is planting rate. Planting rate, also known as seeding rate, refers to the number of plants sown in a certain area, usually calculated in hectare or acres, to ensure a maximum yield. Intuitively, one would think that the more plants planted, the higher the yield. But as we see from the example of SRI at the beginning of this lesson, planting rates can be counterintuitive. Planting fewer plants can mean growing larger, healthier plants that result in more grains, beans, or seeds. Needless to say, a farmer’s crop yield is predicated on his or her initial planting rate. <-