Mais les résultats doivent être attendus longtemps et il n'y a généralement pas de temps metronidazole prix L'autre cas, c'est que l'achat d'un ou d'un autre antibiotique dans une pharmacie classique nécessite des dépenses matérielles considérables et pas toutes les personnes ne peuvent acheter des produits pharmaceutiques aussi coûteux.

Simposio nacional de la ciencia del suelo

Congreso Nacional de la Ciencia del Suelo
Punta Arenas – 2014
COMPOST EFFECTS ON MICROBIAL BIOMASS AND SOIL P POOLS AS
AFFECTED BY PARTICLE SIZE AND SOIL PROPERTIES

Lata, S. & Marschner, P.
(School of Agriculture, Food and Wine, The University of Adelaide).
e-mail: [email protected]
RESUMEN (o) ABSTRACT
Previous studies have shown that finer composts release nutrients more quickly than coarse composts, but
little is known about the nutrient release from different size fractions of a compost. To assess if compost size
fractions differ in their effect on microbial biomass and soil P pools, a compost from garden waste was
separated by sieving into different particle size fractions (> 5 mm, 3-5 mm and < 3 mm) and then mixed into
three different soils (referred as soil A, B and C) at a rate of 50 mg total P kg-1. These soils were chosen
because the size of soil P pools could be affected by soil properties which may also influence how the P pools
respond to compost addition. Cumulative soil respiration, microbial biomass and soil P pools were determined
after 25 and 50 days. Compost addition increased soil respiration and micobial biomass C and P, with the
greatest increase in respiration with the > 5 mm fraction and in microbial biomass C and P with the < 3 mm
fraction. The size of the P pools was mainly affected by soil type, the compost fractions had similar effects on
soil P pools except for a greater increase in available P concentration by the finest fraction compared to the
coarser size fractions. Soil A with the highest organic matter content had the highest concentrations of Fe/Al
associated P (NaOH-P) and organic P whereas Ca-associated P (HCl-P) dominated in the alkaline soil C. The
size of most P pools, even the so-called stable P pools changed over time in amended and non-amended soils.
It can be concluded that the size of P pools is more strongly affected by soil properties such as organic matter
content, texture and pH than by the compost fractions.
Palabras clave: size fractions, soil properties, temporal changes
COMPOST EFFECTS ON MICROBIAL BIOMASS AND SOIL P POOLS AS
AFFECTED BY PARTICLE SIZE AND SOIL PROPERTIES

Lata, S. & Marschner, P.
(School of Agriculture, Food and Wine, The University of Adelaide).
e-mail: [email protected]
RESUMEN (o) ABSTRACT
Previous studies have shown that finer composts release nutrients more quickly than coarse composts, but
little is known about the nutrient release from different size fractions of a compost. To assess if compost size
fractions differ in their effect on microbial biomass and soil P pools, a compost from garden waste was
separated by sieving into different particle size fractions (> 5 mm, 3-5 mm and < 3 mm) and then mixed into
three different soils (referred as soil A, B and C) at a rate of 50 mg total P kg-1. These soils were chosen
because the size of soil P pools could be affected by soil properties which may also influence how the P pools
respond to compost addition. Cumulative soil respiration, microbial biomass and soil P pools were determined
after 25 and 50 days. Compost addition increased soil respiration and micobial biomass C and P, with the
greatest increase in respiration with the > 5 mm fraction and in microbial biomass C and P with the < 3 mm
fraction. The size of the P pools was mainly affected by soil type, the compost fractions had similar effects on
soil P pools except for a greater increase in available P concentration by the finest fraction compared to the
coarser size fractions. Soil A with the highest organic matter content had the highest concentrations of Fe/Al
associated P (NaOH-P) and organic P whereas Ca-associated P (HCl-P) dominated in the alkaline soil C. The
size of most P pools, even the so-called stable P pools changed over time in amended and non-amended soils.
It can be concluded that the size of P pools is more strongly affected by soil properties such as organic matter
content, texture and pH than by the compost fractions.
Palabras clave: size fractions, soil properties, temporal changes

Source: http://congresosuelos2014.umag.cl/web/wp-content/uploads/2013/11/4.pdf

surveyofmaldives.gov.mv

Specification of the equipment to be procured under the project "Building Capacity and Main Streaming Sustainable Land Managaement in the Maldives" Art No/Part No Description SmartStation Setup GNSS Receiver GNSS Receiver GS15 Performance, GNSS SmartAntenna, Geodetic 120 channels GNSS receiver with options: GPS L1+L2, 20 HZ position rate, Raw data logging, RTK unlimi

Microsoft word - hivqual_u_paper_abstract_form_v4

HIVQUAL-U Manual Data Collection Form (version 4) Adult/Adolescent Start Date: XX/ XX/ XXXX End Date: XX/XX/XXXX Patient Profile Patient Data Entry Screen 1: “Monitoring HIV Status and Continuity of Care” 1.1 Did the patient have any CD4 counts during the review period? … Yes … No … Not stated • If no, go to 1.1.2 1.1.1 ( If yes in 1.1 ) Record

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