Calculating the value of manure as a fertilizer source
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"Manure has value on a field if it offsets the need to purchase other nutrients or soil amendments. The worksheet in this guide allows users to calculate the fertilizer value of the manure for a specific field. Assemble the information specified in the input form (Table 1) before completing the worksheet (Table 2). An example scenario is described and is followed by a completed worksheet (Table 3) based on its inputs. Manure has characteristics that may reduce its value relative to that of commercial chemical fertilizers. Manure can be a less dependable nitrogen source and is perceived as a source of weed seeds. Because manure is an unbalanced fertilizer source, using it may meet crop needs for one nutrient but result in application of too much or too little of other crop nutrients. Low nutrient concentration in manure increases handling and application costs. Manure has positive attributes as well: It is a slow-release fertilizer, and the organic material can improve soil quality. The worksheet in this guide determines the value of manure considering only its value as a nutrient source, similar to commercial chemical fertilizers. The actual economic value of manure sold to a farmer is a result of negotiation between the manure seller and the buyer considering the fertilizer value adjusted for recognized positive and negative qualities of using manure as a fertilizer." -- first page
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Archive version. For the most recent information see extension.missouri.edu.
OpenAccess.
OpenAccess.
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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.
Provided for historical documentation only. Check Missouri Extension and Agricultural Experiment Station websites for current information.
Provided for historical documentation only. Check Missouri Extension and Agricultural Experiment Station websites for current information.