Soil-water tension: effect on yield and grain quality of barley

Soil-water tension: effect on yield and grain quality of barley

The objective of this work was to study the effect of three levels of soil-water tension (187, 824 and 1.000 kPa) in three stages of development of barley (Hordeum vulgare, L.) (stage I = emergency to initial tillering, stage II = initial tillering to complete flowering and stage III = complete flowering to hard dough grain) on the crop development, yield, and grain quality. During stage I, all treatments were irrigated at 187 kPa. Due to plant lodging in earlier studies, a well-irrigated treatment (187 kPa) in which cycocel was applied. The crop was irrigated when the soil-water tension at 10 cm depth reached the values of each treatment. The amount of water applied in each irrigation was calcu-lated to bring the soil profile 1 m depth to the field capacity (6 kPa). Irrigation at 187 kPa in all the crop cycle resulted in higher yield independently of cycocel application. Irrigation at 824 kPa in at least one developmental stage resulted in a significative reduction in yield. Nevertheless, the grain protein con-tent was adequate for malting. Irrigation at 1.000 kPa caused a drastic reduction in yield and grain quality. Irrigation at 824 kPa in stage II caused a reduction of plant height similar to cycocel application.

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Main Author: Guerra, Antônio Fernando
Format: Digital revista
Language:por
Published: Pesquisa Agropecuaria Brasileira 1995
Online Access:https://seer.sct.embrapa.br/index.php/pab/article/view/4299
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spelling rev-pab-br-article-42992010-05-03T18:37:19Z Soil-water tension: effect on yield and grain quality of barley Tensão de água no solo: efeito sobre a produtividade e qualidade dos grãos de cevada Guerra, Antônio Fernando tensiometers; gypsum blocks; irrigation; water stress tensiômetros; blocos de gesso; irrigação; estresse hídrico The objective of this work was to study the effect of three levels of soil-water tension (187, 824 and 1.000 kPa) in three stages of development of barley (Hordeum vulgare, L.) (stage I = emergency to initial tillering, stage II = initial tillering to complete flowering and stage III = complete flowering to hard dough grain) on the crop development, yield, and grain quality. During stage I, all treatments were irrigated at 187 kPa. Due to plant lodging in earlier studies, a well-irrigated treatment (187 kPa) in which cycocel was applied. The crop was irrigated when the soil-water tension at 10 cm depth reached the values of each treatment. The amount of water applied in each irrigation was calcu-lated to bring the soil profile 1 m depth to the field capacity (6 kPa). Irrigation at 187 kPa in all the crop cycle resulted in higher yield independently of cycocel application. Irrigation at 824 kPa in at least one developmental stage resulted in a significative reduction in yield. Nevertheless, the grain protein con-tent was adequate for malting. Irrigation at 1.000 kPa caused a drastic reduction in yield and grain quality. Irrigation at 824 kPa in stage II caused a reduction of plant height similar to cycocel application. O objetivo deste trabalho foi estudar o efeito de três níveis de tensão de água no solo (187, 824 e 1.000 kPa), aplicados em três fases do ciclo da cultura (fase I = emergência até início do perfilhamento, fase II = início do perfilhamento até florescimento completo e fase III = florescimento completo até grãos em massa dura), sobre o desenvolvimento, o rendimento e a qualidade dos grãos de cevada. Durante a fase I, todos os tratamentos foram irrigados a 187 kPa. Foi incluído um tratamento irrigado a 187 kPa, em que se aplicou cycocel. Irrigação a 187 kPa em todo o ciclo da cultura, com e sem cycocel, resultou nos mais altos rendimentos. Os tratamentos irrigados a 824 kPa, em pelo menos uma das fases de desenvolvimento, tiveram seus rendimentos reduzidos significativamente, porém o teor de proteína dos grãos permaneceu dentro dos limites desejados. A aplicação de uma tensão de 1.000 kPa causou uma queda drástica do rendimento e da qualidade de grãos. Irrigação a 824 kPa na fase II de desenvolvimento reduziu a altura de planta como a aplicação de cycocel. Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira 1995-02-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/4299 Pesquisa Agropecuaria Brasileira; v.30, n.2, fev. 1995; 245-254 Pesquisa Agropecuária Brasileira; v.30, n.2, fev. 1995; 245-254 1678-3921 0100-104x por https://seer.sct.embrapa.br/index.php/pab/article/view/4299/1585
institution EMBRAPA
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-pab-br
tag revista
region America del Sur
libraryname Sistema de bibliotecas de EMBRAPA
language por
format Digital
author Guerra, Antônio Fernando
spellingShingle Guerra, Antônio Fernando
Soil-water tension: effect on yield and grain quality of barley
author_facet Guerra, Antônio Fernando
author_sort Guerra, Antônio Fernando
title Soil-water tension: effect on yield and grain quality of barley
title_short Soil-water tension: effect on yield and grain quality of barley
title_full Soil-water tension: effect on yield and grain quality of barley
title_fullStr Soil-water tension: effect on yield and grain quality of barley
title_full_unstemmed Soil-water tension: effect on yield and grain quality of barley
title_sort soil-water tension: effect on yield and grain quality of barley
description The objective of this work was to study the effect of three levels of soil-water tension (187, 824 and 1.000 kPa) in three stages of development of barley (Hordeum vulgare, L.) (stage I = emergency to initial tillering, stage II = initial tillering to complete flowering and stage III = complete flowering to hard dough grain) on the crop development, yield, and grain quality. During stage I, all treatments were irrigated at 187 kPa. Due to plant lodging in earlier studies, a well-irrigated treatment (187 kPa) in which cycocel was applied. The crop was irrigated when the soil-water tension at 10 cm depth reached the values of each treatment. The amount of water applied in each irrigation was calcu-lated to bring the soil profile 1 m depth to the field capacity (6 kPa). Irrigation at 187 kPa in all the crop cycle resulted in higher yield independently of cycocel application. Irrigation at 824 kPa in at least one developmental stage resulted in a significative reduction in yield. Nevertheless, the grain protein con-tent was adequate for malting. Irrigation at 1.000 kPa caused a drastic reduction in yield and grain quality. Irrigation at 824 kPa in stage II caused a reduction of plant height similar to cycocel application.
publisher Pesquisa Agropecuaria Brasileira
publishDate 1995
url https://seer.sct.embrapa.br/index.php/pab/article/view/4299
work_keys_str_mv AT guerraantoniofernando soilwatertensioneffectonyieldandgrainqualityofbarley
AT guerraantoniofernando tensaodeaguanosoloefeitosobreaprodutividadeequalidadedosgraosdecevada
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