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7 résultat(s) recherche sur le mot-clé 'MAIZE' 
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Partager le résultat de cette rechercheChanges in CO2 emissions after crop conversion from continuous maize to alfalfa / Giorgio ALBERTI in Agriculture, Ecosystems and Environment, Volume 136, Issue 1-2 (Février 2010)
Titre : Gaseous emissions of N2O and NO and NO3- leaching from urea applied with urease and nitrification inhibitors to a maize (Zea mays) crop Type de document : document électronique Auteurs : Alberto SANZ-COBENA ; Antonio VALLEJO ; Lourdes GARCIA-TORRES ; Laura SANCHEZ-MARTIN Année de publication : March 2012 Article en page(s) : Pages 64–73 Langues : Anglais (eng) Mots-clés : ????? dusi?nany NITRAT Nitrates Nitratos ????????? Nitrate nitrát ??? Azotany Nitrato ?????? ?????? ???????? inhibitory ureázy UREASEINHIBITOR Urease inhibitors Inhibidores de la ureasa ????????????? ??????? Inhibiteur de l'uréase ureáz inhibítor ???????? Inhibitor ureazy Inibidor da urease inhibítory ureázy ??????????????????????????? ????? ??????? oxid dusitý DISTICKSTOFFMONOXID Nitrous oxide Óxido nitroso ????? ????? Oxyde nitreux nitrogén-oxid Podtlenek azotu ????????????? ?????? ??????? inhibitory nitrifikace NITRIFIKATIONSINHIBITOR Nitrification inhibitors Inhibidores de la nitrificación ????????????? ????????? Inhibiteur de nitrification nitrifikáció inhibítor ??????? Inhibitor nitryfikacji Inibidor de nitrificação inhibítory nitrifikácie ???????????????????????????????? oxid dusi?ný STICKOXID Nitric oxide Óxido nítrico ?????? ????? Oxyde nitrique salétrom-oxid Tlenek azotu ???? ??? ????? kuku?i?né zrno MAIS Maize Maíz Maïs kukorica Kukurydza (ziarno) Milho kukurica siata ?? mo?ovina HARNSTOFF Urea Urée karbamid Mocznik Ureia Résumé : Des inhibiteurs de nitrification et d'uréase sont testés pour leurs capacités à réduire les pertes d'azote faisant suite à la fertilisation en urée d'un maïs irrigué. Les pertes mesurées concernent les gaz N2O et NO ainsi que le NO3- par lessivage. Les mesures ont été réalisées sur deux campagnes successives. Les résultats sont notamment exprimés en terme de facteur d'émission. En ligne : http://dx.doi.org/10.1016/j.agee.2011.12.016 Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=86508
in Agriculture, Ecosystems and Environment > Volume 149 (March 2012) . - Pages 64–73[article] Gaseous emissions of N2O and NO and NO3- leaching from urea applied with urease and nitrification inhibitors to a maize (Zea mays) crop [document électronique] / Alberto SANZ-COBENA ; Antonio VALLEJO ; Lourdes GARCIA-TORRES ; Laura SANCHEZ-MARTIN . - March 2012 . - Pages 64–73.
Langues : Anglais (eng)
in Agriculture, Ecosystems and Environment > Volume 149 (March 2012) . - Pages 64–73
Mots-clés : ????? dusi?nany NITRAT Nitrates Nitratos ????????? Nitrate nitrát ??? Azotany Nitrato ?????? ?????? ???????? inhibitory ureázy UREASEINHIBITOR Urease inhibitors Inhibidores de la ureasa ????????????? ??????? Inhibiteur de l'uréase ureáz inhibítor ???????? Inhibitor ureazy Inibidor da urease inhibítory ureázy ??????????????????????????? ????? ??????? oxid dusitý DISTICKSTOFFMONOXID Nitrous oxide Óxido nitroso ????? ????? Oxyde nitreux nitrogén-oxid Podtlenek azotu ????????????? ?????? ??????? inhibitory nitrifikace NITRIFIKATIONSINHIBITOR Nitrification inhibitors Inhibidores de la nitrificación ????????????? ????????? Inhibiteur de nitrification nitrifikáció inhibítor ??????? Inhibitor nitryfikacji Inibidor de nitrificação inhibítory nitrifikácie ???????????????????????????????? oxid dusi?ný STICKOXID Nitric oxide Óxido nítrico ?????? ????? Oxyde nitrique salétrom-oxid Tlenek azotu ???? ??? ????? kuku?i?né zrno MAIS Maize Maíz Maïs kukorica Kukurydza (ziarno) Milho kukurica siata ?? mo?ovina HARNSTOFF Urea Urée karbamid Mocznik Ureia Résumé : Des inhibiteurs de nitrification et d'uréase sont testés pour leurs capacités à réduire les pertes d'azote faisant suite à la fertilisation en urée d'un maïs irrigué. Les pertes mesurées concernent les gaz N2O et NO ainsi que le NO3- par lessivage. Les mesures ont été réalisées sur deux campagnes successives. Les résultats sont notamment exprimés en terme de facteur d'émission. En ligne : http://dx.doi.org/10.1016/j.agee.2011.12.016 Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=86508
Titre : N2O emission in maize-crops fertilized with pig slurry, matured pig manure or ammonium nitrate in Brittany Type de document : document électronique Auteurs : Christophe DAMBREVILLE ; J. C. GERMON ; Thierry MORVAN Année de publication : January 2008 Article en page(s) : Pages 201-210 Langues : Anglais (eng) Catégories : F POPULATIONS - ETUDES DE CAS:Environmental impact Mots-clés : ????? ????????? dusíkatá hnojiva STICKSTOFFDUENGER Nitrogen fertilizers Abonos nitrogenados ?????? ??????? ??????? Engrais azoté nitrogénmûtrágya ???? Nawóz azotowy Adubo azotado dusikaté hnojivá ???????????? ?? ??? ????? kuku?i?né zrno MAIS Maize Maíz ??? Maïs kukorica ?????? Kukurydza (ziarno) Milho kukurica siata ??????? ????? ??????? oxid dusitý DISTICKSTOFFMONOXID Nitrous oxide Óxido nitroso ????? ????? Oxyde nitreux nitrogén-oxid ????? Podtlenek azotu ????????????? ????? ???? vliv na životní prost?edí AUSWIRKUNG AUF DIE UMWELT Impacto ambiental ??? ?????????? Impact sur l'environnement környezeti hatás Oddzia?ywanie na ?rodowisko vplyv na životné prostredie ?????????????????? skleníkové plyny TREIBHAUSGAS Greenhouse gases Gases de efecto invernadero ?????? ????????? Gaz à effet de serre üvegházi gáz Gazy cieplarniane Gás do efeito de estufa ?????????????? N2O Chambre'statique Résumé : Les auteurs évaluent les émissions de N2O sur culture de maïs après épandage de différents engrais azotés (lisier de porc, ammonitrate) en Bretagne. Les émissions de N2O ont été évaluées tout au long d'une année sur deux sites expérimentaux par la méthode des chambres statiques. En ligne : http://dx.doi.org/10.1016/j.agee.2007.06.001 Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=86563
in Agriculture, Ecosystems and Environment > Volume 123, Issues 1-3 (January 2008) . - Pages 201-210[article] N2O emission in maize-crops fertilized with pig slurry, matured pig manure or ammonium nitrate in Brittany [document électronique] / Christophe DAMBREVILLE ; J. C. GERMON ; Thierry MORVAN . - January 2008 . - Pages 201-210.
Langues : Anglais (eng)
in Agriculture, Ecosystems and Environment > Volume 123, Issues 1-3 (January 2008) . - Pages 201-210
Catégories : F POPULATIONS - ETUDES DE CAS:Environmental impact Mots-clés : ????? ????????? dusíkatá hnojiva STICKSTOFFDUENGER Nitrogen fertilizers Abonos nitrogenados ?????? ??????? ??????? Engrais azoté nitrogénmûtrágya ???? Nawóz azotowy Adubo azotado dusikaté hnojivá ???????????? ?? ??? ????? kuku?i?né zrno MAIS Maize Maíz ??? Maïs kukorica ?????? Kukurydza (ziarno) Milho kukurica siata ??????? ????? ??????? oxid dusitý DISTICKSTOFFMONOXID Nitrous oxide Óxido nitroso ????? ????? Oxyde nitreux nitrogén-oxid ????? Podtlenek azotu ????????????? ????? ???? vliv na životní prost?edí AUSWIRKUNG AUF DIE UMWELT Impacto ambiental ??? ?????????? Impact sur l'environnement környezeti hatás Oddzia?ywanie na ?rodowisko vplyv na životné prostredie ?????????????????? skleníkové plyny TREIBHAUSGAS Greenhouse gases Gases de efecto invernadero ?????? ????????? Gaz à effet de serre üvegházi gáz Gazy cieplarniane Gás do efeito de estufa ?????????????? N2O Chambre'statique Résumé : Les auteurs évaluent les émissions de N2O sur culture de maïs après épandage de différents engrais azotés (lisier de porc, ammonitrate) en Bretagne. Les émissions de N2O ont été évaluées tout au long d'une année sur deux sites expérimentaux par la méthode des chambres statiques. En ligne : http://dx.doi.org/10.1016/j.agee.2007.06.001 Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=86563
Titre : The impact of climate changes on the water footprint of wheat and maize production in the Nile Delta, Egypt Type de document : objet à 3 dimensions, artefacts, ... Auteurs : A. Elbeltagi, Auteur ; A. Srivastava ; B. Mehdinejadiani ; A. Malik ; J. Deng ; A.S. Bhatia ; M.R. Aslam, Auteur Année de publication : 2020 Article en page(s) : p. 1-13 Langues : Anglais (eng) Langues originales : Anglais (eng) Catégories : A HISTOIRE - Pays et ensemble de pays:Afrique:Afrique du Nord:Égypte ; A HISTOIRE - Pays et ensemble de pays:Histoire du Monde Rural:Agroéconomie:Production agricole ; S SCIENCES ET TECHNIQUES:Météorologie:Hydrométéorologie:Cycle hydrologique:Évapotranspiration Water loss through evaporation.; S SCIENCES ET TECHNIQUES:Pollution, catastrophes et sécurité:Dégradation de l'environnement:Changement climatiqueMots-clés : 07 - ENVIRONNEMENT 7.3 - Eau. Gestion de l'Eau CLIMATIC CHANGE WATER FOOTPRINT EMPREINTE HYDRIQUE AGRICULTURAL PRODUCTION WHEATS BLE MAIZE MAIS WATER USE UTILISATION DE L'EAU WATER RESOURCES RESSOURCE EN EAU CROP YIELD RENDEMENT DES CULTURES AGRICULTURAL SECTOR SECTEUR AGRICOLE NILE RIVER NIL EGYPT Résumé : Spatial-temporal information of different water resources is essential to rationally manage, sustainably develop, and optimally utilize water. This study focused on simulating future water footprint (WF) of two agronomically important crops (i.e., wheat and maize) using deep neural networks (DNN) method in Nile delta. DNN model was calibrated and validated by using 2006–2014 and 2015–2017 datasets. Moreover, future data (2022–2040) were obtained from three Representative Concentration Pathways (RCP) 2.6, 4.5, and 8.5, and incorporated into DNN prediction set. The findings showed that determination-coefficient between historical-predicted crop evapotranspiration (ETc) varied from 0.92 to 0.97 for two crops. The yield prediction values of wheat-maize deviated within the ranges of −3.21% to 3.47% and −4.93% to 5.88%, respectively. Based on the ensemble of RCP, precipitation was forecasted to decease by 667.40% and 261.73% in winter and summer in western as compared to eastern, respectively, which will ultimately be dropped to 105.02% and 60.87%, respectively parallel to historical. Therefore, the substantial fluctuations in precipitation caused an obvious decrease in green WF of wheat (i.e., 24.96% and 37.44%) in western and eastern, respectively. Additionally, for maize, it induced a 103.93% decrease in western and an 8.96% increase in eastern. Furthermore, increasing ETc by 8.46% and 12.45% gave rise to substantially increasing (i.e., 8.96% and 17.21%) in western for wheat-maize compared to the east, respectively. Likewise, grey wheat-maize WF findings reveals that there was an increase of 3.07% and 5.02% in western as compared to −14.51% and 12.37% in eastern. Hence, our results highly recommend the optimal use of the eastern delta to save blue-water by 16.58% and 40.25% of total requirements for wheat-maize in contrast to others. Overall, the current research framework and results derived from the adopted methodology will help in optimal planning of future water under climate change in the agricultural sector. En ligne : https://doi.org/10.1016/j.scitotenv.2020.140770 Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=255522
in Science of the Total Environment > vol. 743 (15 November 2020) . - p. 1-13[article] The impact of climate changes on the water footprint of wheat and maize production in the Nile Delta, Egypt [objet à 3 dimensions, artefacts, ...] / A. Elbeltagi, Auteur ; A. Srivastava ; B. Mehdinejadiani ; A. Malik ; J. Deng ; A.S. Bhatia ; M.R. Aslam, Auteur . - 2020 . - p. 1-13.
Langues : Anglais (eng) Langues originales : Anglais (eng)
in Science of the Total Environment > vol. 743 (15 November 2020) . - p. 1-13
Catégories : A HISTOIRE - Pays et ensemble de pays:Afrique:Afrique du Nord:Égypte ; A HISTOIRE - Pays et ensemble de pays:Histoire du Monde Rural:Agroéconomie:Production agricole ; S SCIENCES ET TECHNIQUES:Météorologie:Hydrométéorologie:Cycle hydrologique:Évapotranspiration Water loss through evaporation.; S SCIENCES ET TECHNIQUES:Pollution, catastrophes et sécurité:Dégradation de l'environnement:Changement climatiqueMots-clés : 07 - ENVIRONNEMENT 7.3 - Eau. Gestion de l'Eau CLIMATIC CHANGE WATER FOOTPRINT EMPREINTE HYDRIQUE AGRICULTURAL PRODUCTION WHEATS BLE MAIZE MAIS WATER USE UTILISATION DE L'EAU WATER RESOURCES RESSOURCE EN EAU CROP YIELD RENDEMENT DES CULTURES AGRICULTURAL SECTOR SECTEUR AGRICOLE NILE RIVER NIL EGYPT Résumé : Spatial-temporal information of different water resources is essential to rationally manage, sustainably develop, and optimally utilize water. This study focused on simulating future water footprint (WF) of two agronomically important crops (i.e., wheat and maize) using deep neural networks (DNN) method in Nile delta. DNN model was calibrated and validated by using 2006–2014 and 2015–2017 datasets. Moreover, future data (2022–2040) were obtained from three Representative Concentration Pathways (RCP) 2.6, 4.5, and 8.5, and incorporated into DNN prediction set. The findings showed that determination-coefficient between historical-predicted crop evapotranspiration (ETc) varied from 0.92 to 0.97 for two crops. The yield prediction values of wheat-maize deviated within the ranges of −3.21% to 3.47% and −4.93% to 5.88%, respectively. Based on the ensemble of RCP, precipitation was forecasted to decease by 667.40% and 261.73% in winter and summer in western as compared to eastern, respectively, which will ultimately be dropped to 105.02% and 60.87%, respectively parallel to historical. Therefore, the substantial fluctuations in precipitation caused an obvious decrease in green WF of wheat (i.e., 24.96% and 37.44%) in western and eastern, respectively. Additionally, for maize, it induced a 103.93% decrease in western and an 8.96% increase in eastern. Furthermore, increasing ETc by 8.46% and 12.45% gave rise to substantially increasing (i.e., 8.96% and 17.21%) in western for wheat-maize compared to the east, respectively. Likewise, grey wheat-maize WF findings reveals that there was an increase of 3.07% and 5.02% in western as compared to −14.51% and 12.37% in eastern. Hence, our results highly recommend the optimal use of the eastern delta to save blue-water by 16.58% and 40.25% of total requirements for wheat-maize in contrast to others. Overall, the current research framework and results derived from the adopted methodology will help in optimal planning of future water under climate change in the agricultural sector. En ligne : https://doi.org/10.1016/j.scitotenv.2020.140770 Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=255522
Titre : Groundwater-dependent ecosystems as transfer vectors of nitrogen from the aquifer to surface waters in agricultural basins : the fontanili of the Po Plain (Italy) Type de document : objet à 3 dimensions, artefacts, ... Auteurs : R. Balestrini, Auteur ; A. Buffagni ; E. Sacchi ; C.A. Delconte, Auteur Année de publication : 2021 Article en page(s) : p. 1-13 Langues : Anglais (eng) Langues originales : Anglais (eng) Catégories : A HISTOIRE - Pays et ensemble de pays:Histoire de l'Europe:Europe occidentale:Italie ; C ECONOMIE - ECONOMIE SOCIALE ET SOLIDAIRE:Génie civil, militaire et minier:Technologie hydraulique:Irrigation ; F POPULATIONS - ETUDES DE CAS:D SOCIOLOGIE - ETHNOLOGIE - ANTHROPOLOGIE :4.45 Etablissements humains et utilisation des terres:Utilisation des terres ; S SCIENCES ET TECHNIQUES:Géographie et océanographie:Géomorphologie ; S SCIENCES ET TECHNIQUES:Hydrologie:Ressources en eau:Eau souterraine ; S SCIENCES ET TECHNIQUES:Sciences de la chimie:Gaz:Azote Mots-clés : 07 - ENVIRONNEMENT 7.3 - Eau. Gestion de l'Eau LAND USE MAIZE MAIS FARMYARD MANURE FUMIER GEOMORPHOLOGY GROUNDWATER NITROGEN AQUIFERS AQUIFERE POLLUTION BY AGRICULTURE POLLUTION PAR L'AGRICULTURE GROUNDWATER TABLE NAPPE SOUTERRAINE WATER MANAGEMENT GESTION DES EAUX ITALY Résumé : The most spread groundwater-dependent ecosystems in the River Po valley are semi-natural lowland springs called “fontanili”. They provide specific habitats and support high biodiversity, but are often strongly impaired by agricultural pollution. In the present study we seasonally monitored the discharge and nitrogen concentration of 48 fontanili from the Adda and the Ticino river basins. We observed a wide spatial variability of both NO3-N concentrations and flows. The annual NO3-N loads ranged from <1 to 75 t y−1 and < 1 to 29 t y−1 in the Adda and Ticino basins respectively. In the springs characterized by variable discharge the N loads were exported mostly during the summer season when water table level was elevated mainly due to irrigation. Upscaling the mean NO3-N load to each river catchment based on the total number of springs, we obtained an aerial export of 33.2 + 6.0 and 12.5 + 3.2 kg y−1 ha−1. Such loads accounted for the 30.4 and 21.5% of the N surplus estimated for the Adda and Ticino basins respectively. Random Forest analysis was performed to identify the most important environmental variables influencing the nitrate contamination in the spring waters. A total of 22 explanatory variables related to N sources, land uses, intrinsic hydrogeologic and soil proprieties, in “situ” and remotely sensed variables were considered. The percent of soil cultivated with maize in a 500 m radius buffer area surrounding the sampling site, the N from manure and the distance of each spring from the main river were the most effective factors in controlling the NO3-N concentration in the fontanili water. The outcomes of this work open up to achievable management prospects for the protection and recovery of fontanili waters, and can be particularly useful for water managers in identifying areas and sites where restoration plans should be a priority. En ligne : https://doi.org/10.1016/j.scitotenv.2020.141995 Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=255517
in Science of the Total Environment > vol. 753 (20 January 2021) . - p. 1-13[article] Groundwater-dependent ecosystems as transfer vectors of nitrogen from the aquifer to surface waters in agricultural basins : the fontanili of the Po Plain (Italy) [objet à 3 dimensions, artefacts, ...] / R. Balestrini, Auteur ; A. Buffagni ; E. Sacchi ; C.A. Delconte, Auteur . - 2021 . - p. 1-13.
Langues : Anglais (eng) Langues originales : Anglais (eng)
in Science of the Total Environment > vol. 753 (20 January 2021) . - p. 1-13
Catégories : A HISTOIRE - Pays et ensemble de pays:Histoire de l'Europe:Europe occidentale:Italie ; C ECONOMIE - ECONOMIE SOCIALE ET SOLIDAIRE:Génie civil, militaire et minier:Technologie hydraulique:Irrigation ; F POPULATIONS - ETUDES DE CAS:D SOCIOLOGIE - ETHNOLOGIE - ANTHROPOLOGIE :4.45 Etablissements humains et utilisation des terres:Utilisation des terres ; S SCIENCES ET TECHNIQUES:Géographie et océanographie:Géomorphologie ; S SCIENCES ET TECHNIQUES:Hydrologie:Ressources en eau:Eau souterraine ; S SCIENCES ET TECHNIQUES:Sciences de la chimie:Gaz:Azote Mots-clés : 07 - ENVIRONNEMENT 7.3 - Eau. Gestion de l'Eau LAND USE MAIZE MAIS FARMYARD MANURE FUMIER GEOMORPHOLOGY GROUNDWATER NITROGEN AQUIFERS AQUIFERE POLLUTION BY AGRICULTURE POLLUTION PAR L'AGRICULTURE GROUNDWATER TABLE NAPPE SOUTERRAINE WATER MANAGEMENT GESTION DES EAUX ITALY Résumé : The most spread groundwater-dependent ecosystems in the River Po valley are semi-natural lowland springs called “fontanili”. They provide specific habitats and support high biodiversity, but are often strongly impaired by agricultural pollution. In the present study we seasonally monitored the discharge and nitrogen concentration of 48 fontanili from the Adda and the Ticino river basins. We observed a wide spatial variability of both NO3-N concentrations and flows. The annual NO3-N loads ranged from <1 to 75 t y−1 and < 1 to 29 t y−1 in the Adda and Ticino basins respectively. In the springs characterized by variable discharge the N loads were exported mostly during the summer season when water table level was elevated mainly due to irrigation. Upscaling the mean NO3-N load to each river catchment based on the total number of springs, we obtained an aerial export of 33.2 + 6.0 and 12.5 + 3.2 kg y−1 ha−1. Such loads accounted for the 30.4 and 21.5% of the N surplus estimated for the Adda and Ticino basins respectively. Random Forest analysis was performed to identify the most important environmental variables influencing the nitrate contamination in the spring waters. A total of 22 explanatory variables related to N sources, land uses, intrinsic hydrogeologic and soil proprieties, in “situ” and remotely sensed variables were considered. The percent of soil cultivated with maize in a 500 m radius buffer area surrounding the sampling site, the N from manure and the distance of each spring from the main river were the most effective factors in controlling the NO3-N concentration in the fontanili water. The outcomes of this work open up to achievable management prospects for the protection and recovery of fontanili waters, and can be particularly useful for water managers in identifying areas and sites where restoration plans should be a priority. En ligne : https://doi.org/10.1016/j.scitotenv.2020.141995 Permalink : https://cs.iut.univ-tours.fr/index.php?lvl=notice_display&id=255517
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