EVALUATION OF CRUSTING APTITUDE ON SIEVED SOILS. ANEWAPPARATUS

Soil surface crusting has severe agricultural and environmental effects. The action of beating rains can destroy soil surface structure and in some cases lead to surface sealing and crusting which, in turn, reduce soil conductivity, seed emergence and increase the runoff hazard. The susceptibility o...

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Main Authors: Luigi Cavazza, Adriano Guarieri, Antonia Patruno, Elio Cirillo, Claudio Caprara
Format: Article
Language:English
Published: PAGEPress Publications 2008-03-01
Series:Journal of Agricultural Engineering
Subjects:
Online Access:http://www.agroengineering.org/index.php/jae/article/view/124
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spelling doaj-87fee722c46247ef96824ae099be89cd2020-11-25T03:55:54ZengPAGEPress PublicationsJournal of Agricultural Engineering1974-70712239-62682008-03-01391253110.4081/jae.2008.1.25115EVALUATION OF CRUSTING APTITUDE ON SIEVED SOILS. ANEWAPPARATUSLuigi CavazzaAdriano GuarieriAntonia PatrunoElio CirilloClaudio CapraraSoil surface crusting has severe agricultural and environmental effects. The action of beating rains can destroy soil surface structure and in some cases lead to surface sealing and crusting which, in turn, reduce soil conductivity, seed emergence and increase the runoff hazard. The susceptibility of different soils to crusting was studied by a new experimental apparatus and model. A micro rain – simulator mounted on a rotating disc sprinkles water on soil sample and after a certain time (or revolutions of the disc) the water ponded on soil surface completely percolates and water is again applied to the soil surface. The model was used to follow the variation of soil hydraulic conductivity as a function of time or total water applied during the crust formation. The effects of soil sieved crumbs and duration of pre-saturation were investigated during the crust formation. For some soils crusting decreases along the sprinkling events, with the diameter of aggregates presenting high values; sometimes significant structural deterioration in the aggregate of higher diameter occurs after a initial resistance to crusting as evidenced by a sharp reduced hydraulic conductivity. The role of the pre-saturation time seem more important for less resistant soils.http://www.agroengineering.org/index.php/jae/article/view/124crusting, hydraulic conductance, experimental apparatus.
collection DOAJ
language English
format Article
sources DOAJ
author Luigi Cavazza
Adriano Guarieri
Antonia Patruno
Elio Cirillo
Claudio Caprara
spellingShingle Luigi Cavazza
Adriano Guarieri
Antonia Patruno
Elio Cirillo
Claudio Caprara
EVALUATION OF CRUSTING APTITUDE ON SIEVED SOILS. ANEWAPPARATUS
Journal of Agricultural Engineering
crusting, hydraulic conductance, experimental apparatus.
author_facet Luigi Cavazza
Adriano Guarieri
Antonia Patruno
Elio Cirillo
Claudio Caprara
author_sort Luigi Cavazza
title EVALUATION OF CRUSTING APTITUDE ON SIEVED SOILS. ANEWAPPARATUS
title_short EVALUATION OF CRUSTING APTITUDE ON SIEVED SOILS. ANEWAPPARATUS
title_full EVALUATION OF CRUSTING APTITUDE ON SIEVED SOILS. ANEWAPPARATUS
title_fullStr EVALUATION OF CRUSTING APTITUDE ON SIEVED SOILS. ANEWAPPARATUS
title_full_unstemmed EVALUATION OF CRUSTING APTITUDE ON SIEVED SOILS. ANEWAPPARATUS
title_sort evaluation of crusting aptitude on sieved soils. anewapparatus
publisher PAGEPress Publications
series Journal of Agricultural Engineering
issn 1974-7071
2239-6268
publishDate 2008-03-01
description Soil surface crusting has severe agricultural and environmental effects. The action of beating rains can destroy soil surface structure and in some cases lead to surface sealing and crusting which, in turn, reduce soil conductivity, seed emergence and increase the runoff hazard. The susceptibility of different soils to crusting was studied by a new experimental apparatus and model. A micro rain – simulator mounted on a rotating disc sprinkles water on soil sample and after a certain time (or revolutions of the disc) the water ponded on soil surface completely percolates and water is again applied to the soil surface. The model was used to follow the variation of soil hydraulic conductivity as a function of time or total water applied during the crust formation. The effects of soil sieved crumbs and duration of pre-saturation were investigated during the crust formation. For some soils crusting decreases along the sprinkling events, with the diameter of aggregates presenting high values; sometimes significant structural deterioration in the aggregate of higher diameter occurs after a initial resistance to crusting as evidenced by a sharp reduced hydraulic conductivity. The role of the pre-saturation time seem more important for less resistant soils.
topic crusting, hydraulic conductance, experimental apparatus.
url http://www.agroengineering.org/index.php/jae/article/view/124
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