REN R483 Study Guide - Midterm Guide: Liquid Manure, Tilth, Soil Structure
14 Feb 2019
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70-90% of nutrients that go into an animal comes out. Contains chemical compounds: n, p, k, etc, h2s, n2o, organic acids. Lack of value (real or perceived: perception or attitude, odour. Lack of understanding: how to use, similar to human waste. Salt content: germination, very long term soil quality & crop choice. Weather: most of our runoff is snowmelt. Odour social view: majority of complaints, social issue, rural/urban pressure. N loss due to method of application (nh3: need higher rate or crops suffer. General differences between liquid & solid; fresh & compost. Inaccuracy of application: some are immediate, some are slowly over time available. Nutrients released over time from 1 manure application. Organic n solid manure: y1: 25%, y2: 12. 5%, y3: 6% Liquid manure: y1: 40%, y2 20%, y3 10% P yi: 50-70%, y2: 10-20%, y3: 10-20% Inconsistent product (fresh, old, bedding, feed: compost & fertilizer are nice and smooth, easy to spread.
