Navigation Links
Manure runoff depends on soil texture
Date:3/29/2011

MADISON, WI MARCH 18, 2011 Research has documented the rise of nutrient runoff from flat agricultural fields with high rates of precipitation that adds nitrates and phosphates to waterways.

These nutrients increase the amount of phytoplankton in the water, which depletes oxygen and kills fish and other aquatic creatures. While injecting animal manure slurry into the soil has been proven to be an effective way of reducing greenhouse gas emissions, there has been no research on the possibility of nutrients leaching from the soil and reaching waterways.

A collaborative study funded by the Danish Ministry of Food, Agriculture, and Fisheries was carried out between University of Copenhagen and University of Aarhus, Denmark, to investigate the influence of dairy slurry on leaching of manure nutrient components.

Loamy sand, a sandy loam, and loam were the three sub soil textures beneath the plow layer. Bromide was mixed into the slurry to represent dissolved nonreactive solutes like nitrate. The experiments were performed under low precipitation intensity andnear-saturated conditions. Researchers analyzed the leaching of the bromide as well as particulate and dissolved phosphorus.

The results indicated that the slurry injected into the loam soil reduced leaching; however, there was no effect on bromide leaching in the sandy loam or loamy sand. The loamy sand also showed no difference in phosphorus leaching, but a reduction was noted in the sandy loam and the loam.

Nadia Glsner, who conducted the study, said, "This highlights the importance of soil texture when evaluating agricultural management strategies for reducing nutrient losses from agricultural fields. Injection of dairy slurry might reduce leaching of nonreactive slurry components and phosphorus from fine-textured soils, but the effect was not seen on coarse-textured soils."

The full study is published in the March/April 2011 issue of the Journal of Environmental Quality.


'/>"/>

Contact: Sara Uttech
suttech@sciencesocieties.org
608-268-4948
American Society of Agronomy
Source:Eurekalert

Related biology news :

1. Pelletized manure reduces toxic runoff
2. Southern soils mitigate manure microbes
3. Tracking phosphorus runoff from livestock manure
4. Vermicompost from pig manure grows healthy hibiscus
5. Composted dairy manure in foliage plant production
6. Transport behavior of E. coli varies depending on manure source
7. Plant buffers can slow runoff of veterinary antibiotics
8. Arsenic in field runoff linked to poultry litter
9. Super socks help stem pollution runoff
10. Compost filter socks improve runoff from croplands
11. Cover crops reduce erosion, runoff
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/22/2016)... -- On Monday, the Department of Homeland Security (DHS) ... for the Biometric Exit Program. The Request for Information ... explains that CBP intends to add biometrics to confirm ... States , in order to deter visa overstays, ... Logo - http://photos.prnewswire.com/prnh/20160622/382209LOGO ...
(Date:6/15/2016)... , June 15, 2016 ... market report titled "Gesture Recognition Market by Application Market - Global ... 2016 - 2024". According to the report, the  global ... billion in 2015 and is estimated to grow ... 48.56 billion by 2024.  Increasing application ...
(Date:6/3/2016)... 3, 2016 Das ... Nepal hat ein 44 ... geprägter Kennzeichen, einschließlich Personalisierung, Registrierung und IT-Infrastruktur, ... Produktion und Implementierung von Identitätsmanagementlösungen. Zahlreiche renommierte ... Januar teilgenommen, aber Decatur wurde als konformste ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... June 27, 2016  Global demand for enzymes ... through 2020 to $7.2 billion.  This market includes ... cleaning products, biofuel production, animal feed, and other ... and biocatalysts). Food and beverages will remain the ... increasing consumption of products containing enzymes in developing ...
(Date:6/27/2016)... ... June 27, 2016 , ... Parallel 6 , the leading ... the Clinical Reach Virtual Patient Encounter CONSULT module which enables both audio ... and clinical trial team. , Using the CONSULT module, patients and physicians can schedule ...
(Date:6/27/2016)...   Ginkgo Bioworks , a leading organism ... today awarded as one of the World Economic ... most innovative companies. Ginkgo Bioworks is engineering biology ... world in the nutrition, health and consumer goods ... customers including Fortune 500 companies to design microbes ...
(Date:6/24/2016)... ... ... Researchers at the Universita Politecnica delle Marche in Ancona combed medical journal ... Their findings are the subject of a new article on the Surviving Mesothelioma website. ... the blood, lung fluid or tissue of mesothelioma patients that can help point doctors ...
Breaking Biology Technology: