Soil structure degradation in patches of alfalfa fields

Soil structure degradation in patches of alfalfa fields

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Alfalfa [Medicago sativa] is the basic forage resource for milk production in the flat Pampa of the Santa Fe Province of Argentina. However, the presence of microrelief with patches threatens the expansion of the area cultivated with alfalfa. The lower productivity in the patches is attributed to the inferior soil physical quality. The objectives of this study were to quantify indicators of soil physical quality and to establish the soil properties that would affect the alfalfa productivity in patches [PA] and normal areas [NA]. Additionally,the macro and micro nutrient contents in both areas were determined. The experiment was carried out on an Aquic Argiudoll. Eighteen sampling sites, nine in NA and nine in PA were established. At each site, undisturbed soil samples [5 × 5 cm cores] were collected to measure soil bulk density [Bd], soil resistance to root penetration [PR], effective stress [?], the water release curve and the least limiting water range [LLWR]. Disturbed soil samples were also taken to determine macro and micronutrient contents, and particle size distribution. Non differences were detected for soil chemical properties between PA and NA. Aggregate size distribution indicated predominance of small aggregates in PA. Bd, PR and s were higher in PA than in NA, while the LLWR was narrower. Inadequate aeration under conditions of excessive soil moisture and inappropriate soil mechanical resistance when the soil is dry would affect alfalfa productivity. The overall results indicate that thesoil physical quality in PA is lower than in NA.

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Main Authors: Miretti, María Celeste, Imhoff, Silvia del Carmen, da Silva, A. P., Lavado, Raúl Silvio
Format: Texto biblioteca
Language:spa
Subjects:ALFALFA GROWTH, MEDICAGO SATIVA, SOIL NUTRIENT CONTENT, SOIL PHYSICAL PROPERTIES, ,
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spelling KOHA-OAI-AGRO:471492021-11-24T15:51:11Zhttp://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=47149http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=AAGSoil structure degradation in patches of alfalfa fieldsMiretti, María CelesteImhoff, Silvia del Carmenda Silva, A. P.Lavado, Raúl Silviotextspaapplication/pdfAlfalfa [Medicago sativa] is the basic forage resource for milk production in the flat Pampa of the Santa Fe Province of Argentina. However, the presence of microrelief with patches threatens the expansion of the area cultivated with alfalfa. The lower productivity in the patches is attributed to the inferior soil physical quality. The objectives of this study were to quantify indicators of soil physical quality and to establish the soil properties that would affect the alfalfa productivity in patches [PA] and normal areas [NA]. Additionally,the macro and micro nutrient contents in both areas were determined. The experiment was carried out on an Aquic Argiudoll. Eighteen sampling sites, nine in NA and nine in PA were established. At each site, undisturbed soil samples [5 × 5 cm cores] were collected to measure soil bulk density [Bd], soil resistance to root penetration [PR], effective stress [?], the water release curve and the least limiting water range [LLWR]. Disturbed soil samples were also taken to determine macro and micronutrient contents, and particle size distribution. Non differences were detected for soil chemical properties between PA and NA. Aggregate size distribution indicated predominance of small aggregates in PA. Bd, PR and s were higher in PA than in NA, while the LLWR was narrower. Inadequate aeration under conditions of excessive soil moisture and inappropriate soil mechanical resistance when the soil is dry would affect alfalfa productivity. The overall results indicate that thesoil physical quality in PA is lower than in NA.Alfalfa [Medicago sativa] is the basic forage resource for milk production in the flat Pampa of the Santa Fe Province of Argentina. However, the presence of microrelief with patches threatens the expansion of the area cultivated with alfalfa. The lower productivity in the patches is attributed to the inferior soil physical quality. The objectives of this study were to quantify indicators of soil physical quality and to establish the soil properties that would affect the alfalfa productivity in patches [PA] and normal areas [NA]. Additionally,the macro and micro nutrient contents in both areas were determined. The experiment was carried out on an Aquic Argiudoll. Eighteen sampling sites, nine in NA and nine in PA were established. At each site, undisturbed soil samples [5 × 5 cm cores] were collected to measure soil bulk density [Bd], soil resistance to root penetration [PR], effective stress [?], the water release curve and the least limiting water range [LLWR]. Disturbed soil samples were also taken to determine macro and micronutrient contents, and particle size distribution. Non differences were detected for soil chemical properties between PA and NA. Aggregate size distribution indicated predominance of small aggregates in PA. Bd, PR and s were higher in PA than in NA, while the LLWR was narrower. Inadequate aeration under conditions of excessive soil moisture and inappropriate soil mechanical resistance when the soil is dry would affect alfalfa productivity. The overall results indicate that thesoil physical quality in PA is lower than in NA.ALFALFA GROWTHMEDICAGO SATIVASOIL NUTRIENT CONTENTSOIL PHYSICAL PROPERTIESScientia Agricola
institution UBA FA
collection Koha
country Argentina
countrycode AR
component Bibliográfico
access En linea
En linea
databasecode cat-ceiba
tag biblioteca
region America del Sur
libraryname Biblioteca Central FAUBA
language spa
topic ALFALFA GROWTH
MEDICAGO SATIVA
SOIL NUTRIENT CONTENT
SOIL PHYSICAL PROPERTIES

ALFALFA GROWTH
MEDICAGO SATIVA
SOIL NUTRIENT CONTENT
SOIL PHYSICAL PROPERTIES
spellingShingle ALFALFA GROWTH
MEDICAGO SATIVA
SOIL NUTRIENT CONTENT
SOIL PHYSICAL PROPERTIES

ALFALFA GROWTH
MEDICAGO SATIVA
SOIL NUTRIENT CONTENT
SOIL PHYSICAL PROPERTIES
Miretti, María Celeste
Imhoff, Silvia del Carmen
da Silva, A. P.
Lavado, Raúl Silvio
Soil structure degradation in patches of alfalfa fields
description Alfalfa [Medicago sativa] is the basic forage resource for milk production in the flat Pampa of the Santa Fe Province of Argentina. However, the presence of microrelief with patches threatens the expansion of the area cultivated with alfalfa. The lower productivity in the patches is attributed to the inferior soil physical quality. The objectives of this study were to quantify indicators of soil physical quality and to establish the soil properties that would affect the alfalfa productivity in patches [PA] and normal areas [NA]. Additionally,the macro and micro nutrient contents in both areas were determined. The experiment was carried out on an Aquic Argiudoll. Eighteen sampling sites, nine in NA and nine in PA were established. At each site, undisturbed soil samples [5 × 5 cm cores] were collected to measure soil bulk density [Bd], soil resistance to root penetration [PR], effective stress [?], the water release curve and the least limiting water range [LLWR]. Disturbed soil samples were also taken to determine macro and micronutrient contents, and particle size distribution. Non differences were detected for soil chemical properties between PA and NA. Aggregate size distribution indicated predominance of small aggregates in PA. Bd, PR and s were higher in PA than in NA, while the LLWR was narrower. Inadequate aeration under conditions of excessive soil moisture and inappropriate soil mechanical resistance when the soil is dry would affect alfalfa productivity. The overall results indicate that thesoil physical quality in PA is lower than in NA.
format Texto
topic_facet
ALFALFA GROWTH
MEDICAGO SATIVA
SOIL NUTRIENT CONTENT
SOIL PHYSICAL PROPERTIES
author Miretti, María Celeste
Imhoff, Silvia del Carmen
da Silva, A. P.
Lavado, Raúl Silvio
author_facet Miretti, María Celeste
Imhoff, Silvia del Carmen
da Silva, A. P.
Lavado, Raúl Silvio
author_sort Miretti, María Celeste
title Soil structure degradation in patches of alfalfa fields
title_short Soil structure degradation in patches of alfalfa fields
title_full Soil structure degradation in patches of alfalfa fields
title_fullStr Soil structure degradation in patches of alfalfa fields
title_full_unstemmed Soil structure degradation in patches of alfalfa fields
title_sort soil structure degradation in patches of alfalfa fields
url http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=47149
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
work_keys_str_mv AT mirettimariaceleste soilstructuredegradationinpatchesofalfalfafields
AT imhoffsilviadelcarmen soilstructuredegradationinpatchesofalfalfafields
AT dasilvaap soilstructuredegradationinpatchesofalfalfafields
AT lavadoraulsilvio soilstructuredegradationinpatchesofalfalfafields
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