Water use of wheat, corn and sunflower in the Semiarid Pampas

Water use of wheat, corn and sunflower in the Semiarid Pampas

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Crop water use in semiarid environments allows designing management strategies to improve water use efficiency. Our objective was to estimate wheat (Triticum aestivum L.), maize (Zea mays L.) and sunflower (Helianthus annuus L.) water use in the Semiarid Pampas of Argentina and to identify the relative contribution from soil and from in-season rainfall. Data were collected from 138 field experiments conducted during 2000 - 2013 over an area of 15 Mha. Soil water content was measured 3-4 times during the crop growing season, in a total of 552 soil profile moisture determinations. Soil samples were taken every 20 cm in the entire rooting zone. Gravimetric water content was converted to stored water using measured bulk density. Rainfall during crop growing cycle was measured at each experimental site. Crop water use was calculated as the difference between soil water content at sowing minus the soil water content at harvest plus rainfall received during the growing season. Run off and drainage were estimated and discounted from crop water use. Water use efficiency was estimated as the ratio between grain yield and crop water use. Water losses as runoff and drainage rounded 15% among the three crops. Average water use was 319 mm for wheat, 487 mm for maize, and 443 mm for sunflower while respective water use efficiencies were 7.3, 18.6 and 5.6 kg DM grain ha-1 mm-1 respectively. Approximately 90% of water used by crops corresponded apparently to the in - season rainfall where as the contribution from stored soil water at sowing was relatively low, except in dry years when it represented around 25% of in - season crop water use.

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Bibliographic Details
Main Authors: Bono, Angel Alfredo, Alvarez, Roberto, Paepe, Josefina Luisa de
Format: Texto biblioteca
Language:spa
Subjects:USO CONSUNTIVO, EFICIENCIA DEL USO DEL AGUA, REGIÓN PAMPEANA, CROP WATER USE, WATER USE EFFICIENCY, ARGENTINE PAMPAS,
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id KOHA-OAI-AGRO:45741
record_format koha
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 USO CONSUNTIVO
EFICIENCIA DEL USO DEL AGUA
REGIÓN PAMPEANA
CROP WATER USE
WATER USE EFFICIENCY
ARGENTINE PAMPAS
USO CONSUNTIVO
EFICIENCIA DEL USO DEL AGUA
REGIÓN PAMPEANA
CROP WATER USE
WATER USE EFFICIENCY
ARGENTINE PAMPAS
spellingShingle USO CONSUNTIVO
EFICIENCIA DEL USO DEL AGUA
REGIÓN PAMPEANA
CROP WATER USE
WATER USE EFFICIENCY
ARGENTINE PAMPAS
USO CONSUNTIVO
EFICIENCIA DEL USO DEL AGUA
REGIÓN PAMPEANA
CROP WATER USE
WATER USE EFFICIENCY
ARGENTINE PAMPAS
Bono, Angel Alfredo
Alvarez, Roberto
Paepe, Josefina Luisa de
Water use of wheat, corn and sunflower in the Semiarid Pampas
description Crop water use in semiarid environments allows designing management strategies to improve water use efficiency. Our objective was to estimate wheat (Triticum aestivum L.), maize (Zea mays L.) and sunflower (Helianthus annuus L.) water use in the Semiarid Pampas of Argentina and to identify the relative contribution from soil and from in-season rainfall. Data were collected from 138 field experiments conducted during 2000 - 2013 over an area of 15 Mha. Soil water content was measured 3-4 times during the crop growing season, in a total of 552 soil profile moisture determinations. Soil samples were taken every 20 cm in the entire rooting zone. Gravimetric water content was converted to stored water using measured bulk density. Rainfall during crop growing cycle was measured at each experimental site. Crop water use was calculated as the difference between soil water content at sowing minus the soil water content at harvest plus rainfall received during the growing season. Run off and drainage were estimated and discounted from crop water use. Water use efficiency was estimated as the ratio between grain yield and crop water use. Water losses as runoff and drainage rounded 15% among the three crops. Average water use was 319 mm for wheat, 487 mm for maize, and 443 mm for sunflower while respective water use efficiencies were 7.3, 18.6 and 5.6 kg DM grain ha-1 mm-1 respectively. Approximately 90% of water used by crops corresponded apparently to the in - season rainfall where as the contribution from stored soil water at sowing was relatively low, except in dry years when it represented around 25% of in - season crop water use.
format Texto
topic_facet USO CONSUNTIVO
EFICIENCIA DEL USO DEL AGUA
REGIÓN PAMPEANA
CROP WATER USE
WATER USE EFFICIENCY
ARGENTINE PAMPAS
author Bono, Angel Alfredo
Alvarez, Roberto
Paepe, Josefina Luisa de
author_facet Bono, Angel Alfredo
Alvarez, Roberto
Paepe, Josefina Luisa de
author_sort Bono, Angel Alfredo
title Water use of wheat, corn and sunflower in the Semiarid Pampas
title_short Water use of wheat, corn and sunflower in the Semiarid Pampas
title_full Water use of wheat, corn and sunflower in the Semiarid Pampas
title_fullStr Water use of wheat, corn and sunflower in the Semiarid Pampas
title_full_unstemmed Water use of wheat, corn and sunflower in the Semiarid Pampas
title_sort water use of wheat, corn and sunflower in the semiarid pampas
url http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=45741
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spelling KOHA-OAI-AGRO:457412023-10-25T10:43:49Zhttp://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=45741http://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=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=AAGWater use of wheat, corn and sunflower in the Semiarid PampasBono, Angel AlfredoAlvarez, RobertoPaepe, Josefina Luisa detextspaapplication/pdfCrop water use in semiarid environments allows designing management strategies to improve water use efficiency. Our objective was to estimate wheat (Triticum aestivum L.), maize (Zea mays L.) and sunflower (Helianthus annuus L.) water use in the Semiarid Pampas of Argentina and to identify the relative contribution from soil and from in-season rainfall. Data were collected from 138 field experiments conducted during 2000 - 2013 over an area of 15 Mha. Soil water content was measured 3-4 times during the crop growing season, in a total of 552 soil profile moisture determinations. Soil samples were taken every 20 cm in the entire rooting zone. Gravimetric water content was converted to stored water using measured bulk density. Rainfall during crop growing cycle was measured at each experimental site. Crop water use was calculated as the difference between soil water content at sowing minus the soil water content at harvest plus rainfall received during the growing season. Run off and drainage were estimated and discounted from crop water use. Water use efficiency was estimated as the ratio between grain yield and crop water use. Water losses as runoff and drainage rounded 15% among the three crops. Average water use was 319 mm for wheat, 487 mm for maize, and 443 mm for sunflower while respective water use efficiencies were 7.3, 18.6 and 5.6 kg DM grain ha-1 mm-1 respectively. Approximately 90% of water used by crops corresponded apparently to the in - season rainfall where as the contribution from stored soil water at sowing was relatively low, except in dry years when it represented around 25% of in - season crop water use.Crop water use in semiarid environments allows designing management strategies to improve water use efficiency. Our objective was to estimate wheat (Triticum aestivum L.), maize (Zea mays L.) and sunflower (Helianthus annuus L.) water use in the Semiarid Pampas of Argentina and to identify the relative contribution from soil and from in-season rainfall. Data were collected from 138 field experiments conducted during 2000 - 2013 over an area of 15 Mha. Soil water content was measured 3-4 times during the crop growing season, in a total of 552 soil profile moisture determinations. Soil samples were taken every 20 cm in the entire rooting zone. Gravimetric water content was converted to stored water using measured bulk density. Rainfall during crop growing cycle was measured at each experimental site. Crop water use was calculated as the difference between soil water content at sowing minus the soil water content at harvest plus rainfall received during the growing season. Run off and drainage were estimated and discounted from crop water use. Water use efficiency was estimated as the ratio between grain yield and crop water use. Water losses as runoff and drainage rounded 15% among the three crops. Average water use was 319 mm for wheat, 487 mm for maize, and 443 mm for sunflower while respective water use efficiencies were 7.3, 18.6 and 5.6 kg DM grain ha-1 mm-1 respectively. Approximately 90% of water used by crops corresponded apparently to the in - season rainfall where as the contribution from stored soil water at sowing was relatively low, except in dry years when it represented around 25% of in - season crop water use.USO CONSUNTIVOEFICIENCIA DEL USO DEL AGUAREGIÓN PAMPEANACROP WATER USEWATER USE EFFICIENCYARGENTINE PAMPASCiencia del suelo : revista de la Asociación Argentina de la Ciencia del Suelo

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