Field Application of Bromophenol Blue Filter Paper Method to Detect Mastitis

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.

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CALIBRATING AND EVALUATING FILTER PAPER METHOD FOR DETERMINING SOIL MOISTURE CHARACTERISTIC CURVE

Journal of Soil Sciences and Agricultural Engineering ◽

10.21608/jssae.2007.201527 ◽

2007 ◽

Vol 32 (9) ◽

pp. 8017-8026

Author(s):

W.M. Omran ◽

B.M. El-Garhy

Keyword(s):

Soil Moisture ◽

Filter Paper ◽

Characteristic Curve ◽

Filter Paper Method ◽

Moisture Characteristic ◽

Paper Method

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

Molecular Genetics and Metabolism ◽

10.1016/j.ymgme.2007.08.079 ◽

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

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Redesigned Filter Paper Method: Protocol and Assessment Using Reconstituted Samples

Geotechnical Testing Journal ◽

10.1520/gtj20190420 ◽

2020 ◽

Vol 44 (2) ◽

pp. 20190420

Author(s):

Lucas Walshire ◽

Woodman Berry ◽

Oliver-Denzil Taylor

Keyword(s):

Filter Paper ◽

Filter Paper Method ◽

Paper Method

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

Revista Brasileira de Ciência do Solo ◽

10.1590/01000683rbcs20140546 ◽

2015 ◽

Vol 39 (5) ◽

pp. 1344-1352 ◽

Cited By ~ 3

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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