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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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 |
work_keys_str_mv |
AT luigicavazza evaluationofcrustingaptitudeonsievedsoilsanewapparatus AT adrianoguarieri evaluationofcrustingaptitudeonsievedsoilsanewapparatus AT antoniapatruno evaluationofcrustingaptitudeonsievedsoilsanewapparatus AT eliocirillo evaluationofcrustingaptitudeonsievedsoilsanewapparatus AT claudiocaprara evaluationofcrustingaptitudeonsievedsoilsanewapparatus |
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