by OMAFRA Ag Rep Brian Bell
Take advantage of the fall season
Fall is not only a good time for introspection, but also to lay a sound foundation for the next crop season. Some of the other important tasks that you could do in the fall are as follows:
1. Soil testing: Take soil samples from your fields (0-15 cm soil depth for basic soil tests and micronutrients, and 0-30 cm for nitrate nitrogen and sulphur); if you haven’t done the soil tests for the last 3 years. Go for micronutrients (zinc, manganese, copper and boron) tests, if you haven’t tested your soils for micronutrients in the recent past. Remember sustaining crop yields with the application of NPK fertilizers alone isn’t possible any more. You may wish to test alfalfa, soybean and corn fields for nitrogen and sulphur too, as soon as the soil temperature comes to 10-14°C or below, so that you are able to discount some residual/or fixed N from these crops next spring. At low temperatures, there is no significant transformation/or losses of nutrients. For details on soil sampling and testing, refer to Soil Fertility Guide (www.omafra.gov.on.ca/english/crops/pub611/pub611.pdf). The economic and environmental benefits from a sound fertilizer program, based on soil tests, could be many times the cost of soil testing. If you don’t have time for soil sampling yourself, look for someone providing custom soil sampling/testing services at a reasonable cost.
2. Manure testing: Fertilizers are one of the costliest inputs for crop production. Test manure for its nutrients content; to decide on the right rates of manure and fertilizers application to minimize costs on nutrients application/and environmental impacts, and to obtain maximum economic yields. http://www.omafra.gov.on.ca/english/nm/