Animal manure can be a valuable soil nutrient. Three stories at Water.unl.edu explore how manure improves soil fertility and productivity, how poultry manure can be managed in crop production, and how composted beef manure can be added to sugar beet production.
Iowa State University researchers concluded from a long-term field study that poultry manure, when applied at a rate to meet crop nitrogen (N) requirements, can reduce nitrate loss and achieve equal or better yields in corn-soybean production systems.
Nitrogen in manure requires some simple planning to insure it's given proper credit for offsetting commercial fertilizer inputs. This Water.unl.edu article offers key information for calculating N credit.
Recent heavy rains have many feedlot holding ponds full and operators looking for irrigation options to apply animal manure during the growing season. Here are some considerations for applying diluted animal manures without damaging the crop.
If manure is applied at rates equal to or less than the nitrogen (N) requirement of a crop, can manure produce environmental benefits over commercial fertilizer? This article summarizes the "Take Home Messages" from a paper summarizing 141 studies relative to the question.
Manure has value. That value may result from improvements in soil quality, increases in yield, and replacement of commercial nutrient required for crop production. This article focuses on the economic benefits of manure.