Evaluation of iron oxide impregnated filter paper method as an index of phosphorus availability in paddy soils of Tanzania

2006 ◽  
Vol 77 (2) ◽  
pp. 169-177 ◽  
Author(s):  
C. Y. Shekiffu ◽  
J. M. R. Semoka
Keyword(s):  
Iron Oxide ◽  
Filter Paper ◽  
Phosphorus Availability ◽  
Paddy Soils ◽  
Filter Paper Method ◽  
Paper Method

scholarly journals Determination of water retention characteristics of organic soils, using the indirect filter-paper method

2018 ◽  
Vol 2 ◽  
pp. 13-21
Author(s):  
Ryszard Oleszczuk ◽  
◽  
Ewelina Zając ◽  
Edyta Hewelke ◽  
Karolina Wawer ◽  
...  
Keyword(s):  
Filter Paper ◽  
Water Retention ◽  
Organic Soils ◽  
Filter Paper Method ◽  
Retention Characteristics ◽  
Paper Method

The Effect of Contact on the Filter Paper Method for Measuring Soil Suction

2012 ◽  
Vol 35 (1) ◽  
pp. 103571 ◽  
Author(s):  
L. D. Suits ◽  
T. C. Sheahan ◽  
Fernando A. M. Marinho ◽  
Jorge E. da Silva Gomes
Keyword(s):  
Filter Paper ◽  
Soil Suction ◽  
Filter Paper Method ◽  
Paper Method

A Revised Contact Filter Paper Method

2008 ◽  
Vol 31 (6) ◽  
pp. 101099 ◽  
Author(s):  
L. D. Suits ◽  
T. C. Sheahan ◽  
Kenton C. Power ◽  
Sai K. Vanapalli ◽  
Vinod K. Garga
Keyword(s):  
Filter Paper ◽  
Filter Paper Method ◽  
Paper Method

Simplified filter paper method for determining the 15-atmosphere percentage of soils

1965 ◽  
Vol 5 (18) ◽  
pp. 201 ◽  
Author(s):  
OB Williams ◽  
RH Sedgley
Keyword(s):  
Filter Paper ◽  
Field Studies ◽  
Filter Paper Method ◽  
Simplified Method ◽  
Paper Method

A simplified filter paper method of determining the 15-atmosphere percentage in soils has been tested over a range of soil textures from sands to heavy clays. The regression of filter paper determinations against pressure membrane determinations of the 15-atmosphere percentage for the 34 soils gave the equation- y = 1.03x + 3.0 (r = 0.99 and P<0.001) where y = 15-atmosphere percentage (filter paper) x = 15-atmosphere percentage (pressure membrane). The results given by this simplified method indicate that it should be acceptable to agronomists and ecologists for field studies where facilities are limited.

74 Development of a filter paper method applicable to a mass urinary screening for Fabry disease

2007 ◽  
Vol 92 (4) ◽  
pp. 27-28
Author(s):  
Christiane Auray-Blais ◽  
Denis Cyr ◽  
Robert Giguère ◽  
Bernard Lemieux ◽  
Régen Drouin
Keyword(s):  
Fabry Disease ◽  
Filter Paper ◽  
Filter Paper Method ◽  
Urinary Screening ◽  
Paper Method

Redesigned Filter Paper Method: Protocol and Assessment Using Reconstituted Samples

2020 ◽  
Vol 44 (2) ◽  
pp. 20190420
Author(s):  
Lucas Walshire ◽  
Woodman Berry ◽  
Oliver-Denzil Taylor
Keyword(s):  
Filter Paper ◽  
Filter Paper Method ◽  
Paper Method

scholarly journals Filter Paper Method for the Determination of the Soil Water Retention Curve

2015 ◽  
Vol 39 (5) ◽  
pp. 1344-1352 ◽  
Author(s):  
Eurileny Lucas de Almeida ◽  
Adunias dos Santos Teixeira ◽  
Francisco Chagas da Silva Filho ◽  
Raimundo Nonato de Assis Júnior ◽  
Raimundo Alípio de Oliveira Leão
Keyword(s):  
Filter Paper ◽  
Water Retention ◽  
Water Retention Curve ◽  
Soil Water Retention Curve ◽  
Soil Water Retention ◽  
Matric Potential ◽  
Retention Curve ◽  
Filter Paper Method ◽  
Van Genuchten Model ◽  
Paper Method

ABSTRACT High cost and long time required to determine a retention curve by the conventional methods of the Richards Chamber and Haines Funnel limit its use; therefore, alternative methods to facilitate this routine are needed. The filter paper method to determine the soil water retention curve was evaluated and compared to the conventional method. Undisturbed samples were collected from five different soils. Using a Haines Funnel and Richards Chamber, moisture content was obtained for tensions of 2; 4; 6; 8; 10; 33; 100; 300; 700; and 1,500 kPa. In the filter paper test, the soil matric potential was obtained from the filter-paper calibration equation, and the moisture subsequently determined based on the gravimetric difference. The van Genuchten model was fitted to the observed data of soil matric potential versus moisture. Moisture values of the conventional and the filter paper methods, estimated by the van Genuchten model, were compared. The filter paper method, with R2 of 0.99, can be used to determine water retention curves of agricultural soils as an alternative to the conventional method.

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