what kind of fertilizer to use based on soil test. Also questions about raising organic apples

Asked May 17, 2017, 5:28 PM EDT

I had a soil test done (report # 66581 date 3-28-17) . I am trying to figure out what kind of fertilizer and how much to use to get the right ratio needed. We are trying to do things organically. We have a 100- 120 ft square garden . The recommended ratio was 15-0-20. I went to bachmans and they sold me a tomatoe fertilizer that wasa 3-4-6 which does not make any sense to me. Our phosphorous was too high. any suggestions on what to use and still be able to go organic. thank you. Additionally, we have 2 apple trees and 2 peach trees. do you have information on how to raise apples and peaches without chemicals? I would appreciate you help . thank you. mary ellen . 612-720-7324

Hennepin County Minnesota

1 Response

The U of M recommends bagging apples and peaches for organic home production. Here are three links that describe bagging as well as other useful information for home gardeners growing fruit trees. http://www.extension.umn.edu/garden/yard-garden/fruit/apples-in-home-garden/index.html. And: http://www.extension.umn.edu/garden/yard-garden/fruit/stone-fruit-for-minnesota-gardens/ As to your fertilizer question. Here is a link to help you understand your soil test and how to supplement N/nitrogen and K/potassium/potash. You already have enough phosphorous. As far as organic fertilizers go..it is difficult to calculate as stated in the article. In general organics vary in their composition and release more slowly into the soil. For example, a good source of K is wood ashes. The organics are best incorporated into the soil before planting. Using too high a rate of nitrogen can burn young plants. There is lots to learn about organic fertilizers. The garden center probably gave you the lowest/weakest fertilizer available so that you did not burn plants. After reading the articles you may have more questions which you can email back to me. http://www.extension.umn.edu/garden/yard-garden/soils/soil-test-interpretations-and-fertilizer-management/