Gary and Nancy Guthrie, Nevada, have a CSA garden where new questions are always cropping up. In 2001, they addressed questions of fertility, specifically foliar fertilization. Gary had read that potatoes responded to a fish emulsion-kelp mix and a proprietary calcium product if applied to the leaves of the young plants. He wanted to check the effects of calcium and fish-kelp, both separately and together, which led to a “2×2 factorial” experiment. But Gary was also interested to look at the response of the different potato varieties on the farm, so he repeated the trial for each of five varieties.
Do you want to cut input costs and reduce your nitrogen application? Apply for our N Rate Risk Protection Program by April 30.