Establishment scheme for official standards of liquid swine manure fertilizer

Phosphorus loss to runoff water twenty-four hours after application of liquid swine manure or fertilizer.

Phosphorus (P) added to soil from fertilizer or manure application could pose a threat to water quality due to its role in eutrophication of fresh water resources. Incorporating such amendments into the soil is an established best management practice (BMP) for reducing soluble P losses in runoff water, but could also lead to higher erosion. The objective of this study was to test whether incorp...

Phosphorus runoff from incorporated and surface-applied liquid swine manure and phosphorus fertilizer.

Excessive fertilization with organic and/or inorganic P amendments to cropland increases the potential risk of P loss to surface waters. The objective of this study was to evaluate the effects of soil test P level, source, and application method of P amendments on P in runoff following soybean [Glycine max (L.) Merr.]. The treatments consisted of two rates of swine (Sus scrofa domestica) liquid...

Evaluation of a Mechanical Solid-liquid Separator for Swine Manure

Agronomic Effectiveness of Calcium Phosphate Recovered from Liquid Swine Manure

A new manure treatment technology developed as an alternative to anaerobic lagoons on swine (Sus scrofa domesticus) farms includes solid-liquid separation and subsequent recovery of soluble P as calcium phosphate from the wastewater. The objective was to determine the agronomic effectiveness of this calcium phosphate material. A greenhouse study was conducted with annual ryegrass (Lolium multif...

Odor Control in Liquid Swine and Dairy Manure

In a series of five tests, liquid polyphosphate fertilizer solution was used to treat liquid dairy and swine manure to control odors. Potassium permanganate, a pesticide-wetting agent, nitrogen-zinc liquid fertilizer solution and a digestive deodorant were also used in several of the tests. All tests were evaluated by an odor panel for odor strength and odor quality. The polyphosphates did not ...