Phosphorus Runoff from Surface-applied Dairy Manure from Different Phosphorus Diets and Management PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Phosphorus Runoff from Surface-applied Dairy Manure from Different Phosphorus Diets and Management PDF full book. Access full book title Phosphorus Runoff from Surface-applied Dairy Manure from Different Phosphorus Diets and Management by Laura Patrice Hanrahan. Download full books in PDF and EPUB format.
Author: Laura Patrice Hanrahan
Publisher:
ISBN:
Category :
Languages : en
Pages : 124
Get Book Here
Book Description
Author: Laura Patrice Hanrahan
Publisher:
ISBN:
Category :
Languages : en
Pages : 124
Get Book Here
Book Description
Author: Sharon Mary O'Rourke
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Heidi M. Waldrip
Publisher: John Wiley & Sons
ISBN: 0891183701
Category : Technology & Engineering
Languages : en
Pages : 448
Get Book Here
Book Description
The majority of meat, milk, and eggs consumed in the United States are produced in concentrated animal feeding operations (CAFO). With concentrated animal operations, in turn comes concentrated manure accumulation, which can pose a threat of contamination of air, soil, and water if improperly managed. Animal Manure: Production, Characteristics, Environmental Concerns, and Management navigates these important environmental concerns while detailing opportunities for environmentally and economically beneficial utilization.
Author: Angela M. Ebeling
Publisher:
ISBN:
Category :
Languages : en
Pages : 304
Get Book Here
Book Description
Author: Laura Elizabeth Harstad
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Nutrient over-loading in many dairy manure-amended soils in the dairy producing areas of Texas has led to environmental problems as such eutrophication of local surface water bodies. One of the nutrients contributing to eutrophication problems is phosphorus (P). This project focused on fractionation and solubility of selected P forms in an effort to determine a relationship with P found in runoff from dairy manureamend soils. Ten soils (5 calcareous, 5 noncalcareous) were collected from the dairy producing areas of Texas. Triplicate soil samples were analyzed for 0-5 cm and 5-15 cm depths. An acid-base extraction method was used to determine total P (TP), inorganic P, and organic P. Sequential extractions were used to determine the loosely-bound P, iron (Fe) phosphates, aluminum (Al) phosphates, reductant soluble P, occluded apatite P, and calcium (Ca) phosphates for calcareous and noncalcareous samples. The ammonium oxalate method was used to determine extractable Fe, Al, and silicon (Si). Potassium chloride extraction was used to determine soluble Ca, Al, Fe, Mg, and P.A weak NaOH extract was used to determined the amount of bioavalible P. Dissolved P in runoff events and soil pH were collected in a previous study. Calcareous and noncalcareous soils displayed varying concentrations of P indifferent fractions and with separate comparisons, stronger relationships could be achieved. It was also determined that KCl soluble Mg could be used as a predictor for dissolved and total P in runoff for calcareous soils (r2's ranging from 0.865 to 0.928 and 0.801 to 0.886, respectively). Ammonium oxalate extractable Al also yielded high correlations in calcareous soils for dissolved and total P in runoff (r2 ranging from 0.798 to 0.991 and 0.766 to 0.973, respectively). In noncalareous soils, pH resulted in a less correlated relationship with dissolved P (r2 = 0.600). This study shows that there are simple and effective ways of predicting dissolved and total P in runoff to improve best management practice recommendations for manure-amended soils.
Author: Julie S. Studnicka
Publisher:
ISBN:
Category :
Languages : en
Pages : 236
Get Book Here
Book Description
Author: Luke Gatiboni
Publisher: Frontiers Media SA
ISBN: 2889663574
Category : Science
Languages : en
Pages : 140
Get Book Here
Book Description
Author: Kathryn Elizabeth Lawson
Publisher:
ISBN:
Category : Dairy cattle
Languages : en
Pages : 83
Get Book Here
Book Description
Phosphorus is an essential nutrient for life, but excess phosphorus in runoff from manure applied to agricultural fields can lead to negative environmental impacts such as harmful algal blooms. Water-extractable phosphorus (WEP) is correlated with phosphorus runoff from land-applied manure, but can change depending on the water content of a sample. Understanding how total phosphorus (TP) and WEP partition through livestock manure management systems can aid attempts in preventing phosphorus pollution of watersheds by increasing knowledge of how to remove it at its source. A number of dairy farms use solid-liquid separation in order to make the manure easier to handle. This produces a mostly solid material which can be re-used in the dairy barns as bedding for the cows, as well as a mostly liquid material which is applied to the fields. However, little is known about the partitioning of WEP through solid-liquid separation.
Author: Dustin Cody Graham
Publisher:
ISBN:
Category :
Languages : en
Pages : 144
Get Book Here
Book Description
Agricultural runoff is a leading non-point source contributor to water quality impairment in the United States and is associated with eutrophication of surface waters. Phosphorus (P) is often the most limiting nutrient for eutrophication in freshwaters. The objectives of this study were to characterize the P forms in surface runoff from an agricultural field that has received long-term applications of liquid dairy manure and to determine the forms of soil P that occur within a sinkhole feature located within the application field. Three 21-m x 6 m bermed plots were established to collect storm water runoff from a portion of the study site which drains into the sinkhole. The runoff collected was analyzed for total P (TP), dissolved reactive phosphorus (DRP), total dissolved P (TDP), dissolved organic phosphorus (DOP), and particulate P (PP). Soils were sampled from various elevations within the sinkhole feature and were analyzed for TP, total organic P (TOP), Mehlich-3 extractable P, and the maximum P sorption capacity. The results showed a precipitous increase in TP of surface runoff after manure application, from 2.2 g ha−1 to 21.9 g ha−1. The majority of P leaving the field as runoff prior to manure application was associated with the PP fraction (63% of TP). Surface runoff from two rainfall events occurring after diary manure was applied consisted predominately of DRP (67% of TP). Dissolved reactive P in runoff ranged from 0.02 to 0.2 mg L−1 before manure application and 7.1 to 17.1 mg L−1 after application. It has been reported that DRP concentrations in the low ìg/L range can negatively stimulate aquatic vegetation growth in P-limited waters, which indicates the runoff leaving the study site has the potential to impair water quality. A statistically significant difference existed for soil TP concentrations at different elevations within the sinkhole feature, ranging from 3116 mg kg−1 in the base to 914 mg kg−1 in the higher elevations of the sinkhole. A slight increase in TOP concentrations from the base (407 mg kg−1) to the higher elevations of the sinkhole (513 mg kg−1 occurred. The measured maximum P sorption capacity of soils within the sinkhole feature showed that these soils can potentially sorb between 284-379 mg kg−1 of P indicating that the soils are not P saturated and are capable of fixing additional P from runoff.
Author: Zhongqi He
Publisher: Nova Novinka
ISBN: 9781616689803
Category : Farm manure
Languages : en
Pages : 0
Get Book Here
Book Description
A significant amount of phosphorus (P) is present in animal manure. Land application of animal manure can benefit crop production by providing P and other nutrients. However, P runoff from agricultural soil due to over-application of animal manure may cause surface water degradation. Best management strategies are needed to optimize recycling manure P while minimising adverse consequences of manure land application. The chemical composition of P in animal manure is one of the critical factors controlling P transport and bioavailability in soils. In the last decade, efforts have been made to increase basic knowledge of manure P chemistry by applying novel and/or modified advanced analytic methodologies. This book discusses research on characterisation of P forms in animal manure.
