Parâmetros fisiológicos e componentes de produção de feijão-caupi cultivado sob deficiência hídrica

Dutra, Alexson Filgueiras; Melo, Alberto Soares de; Filgueiras, Luanna Maria Beserra; Silva, Allisson Rafael Ferreira da; Oliveira, I.M.; Brito, Marcos Eric Barbosa

doi:10.5039/agraria.v10i2a3912

Cited by 29 publications

(33 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These results are similar to those obtained by Souza et al (2011) and Dutra et al (2015), who observed that the production components of the studied cowpea cultivars were better expressed with water depths equivalent to 100% ETo. According to Silva et al (2010), the presence of water deficit precludes several physiological and metabolic processes in cowpea, reducing its yield, because water is one of the main factors responsible for regulating the stomata.…”

Section: Resultssupporting

confidence: 91%

Yield and water use efficiency of cowpea under water deficit

Souza

Ramos

Fiel

et al. 2019

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

The state of Pará is the main regional producer of cowpea, but its yield is still low compared to other states of the Northern region such as Amazonas and Tocantins, due to the management adopted and the water regime during the cycle, since its cultivation is conducted on a rainfed basis. The objective of this study was to evaluate how water deficit imposed during reproductive stage interferes in the yield of cowpea and in its water use efficiency under the climatic conditions of Castanhal, Pará, Brazil, for agricultural planning purposes. The experiment was carried out in Castanhal, northeastern region of the Pará state during the dry season of 2014, 2015 and 2016. The experimental design was randomized blocks with six blocks and four treatments, corresponding to different irrigation depths in the reproductive stage, defined as 100, 50, 25 and 0% of the crop evapotranspiration. Water use efficiency (WUE) was determined by the ratio between total grain yield and total water used in each treatment. Maximum water availability led to an average increase in yield of 58% compared to the treatment without irrigation. Water depths below 260 mm limited yield to values lower than 1,000 kg ha-1. The cultivar adopted had WUE of 4.63 kg ha-1 mm-1, in response to the higher levels of water supply, but showed WUE of 4.31 kg ha-1 mm-1 under water depth of 50% of water demand.

show abstract

Section: Resultssupporting

confidence: 91%

Yield and water use efficiency of cowpea under water deficit

Souza

Ramos

Fiel

et al. 2019

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

show abstract

“…It is one of the main crops used as a protein source in the world . Some of its genotypes have tolerance to the temporary water deficit of the soil, characteristic that makes the crop one of the preferred for cultivation in periods of lower precipitation, mainly in the North, Northeast and Midwest regions of Brazil (Nascimento et al, 2011;Dutra et al, 2015). In these regions, droughts (summer) are common in the rainy season and, consequently, problems caused by water deficit, such as reduced growth and productivity, are common (Sousa et al, 2009;Freitas et al, 2014;Souza et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Competition between cowpea and weeds for water: Effect on plants growth

Oliveira

Gama

Dombroski

et al. 2018

Agraria

View full text Add to dashboard Cite

ABSTRACT:Water is the most important resource for agricultural production. The understanding of water competition mechanisms may lead to the development of new control strategies or coexistence with certain weed species, especially in situations where water is scarce. The objective of this work was to evaluate the competition between cowpea and weeds by water under the effect on plant growth. It was carried out experiment in greenhouse in the period from September to November 2015, in a randomized complete block design, with four replications. The treatments were arranged in factorial 5 x 2, with the first factor corresponding to the competition arrangements between the species (V. unguiculata + C. benghalensis; V. unguiculata + W. indica; V. unguiculata, C. benghalensis and W. indica in monoculture), and the second of water regimes (irrigated and water deficit). The water deficit reduces the growth of cowpea plants, C. benghalensis and W. indica. The competition between plants increases the effects of temporary water deficit in the soil. The W. indica leaf is the organ most affected by the water deficit. The weed specie W. indica has greater capacity competition for water with V. unguiculata than C. benghalensis. Key words: Commelina benghalensis; interference; Vigna unguiculata; Waltheria indica; water stressCompetição entre feijão-caupi e plantas daninhas por água: Efeito no crescimento das plantas RESUMO: A água é o recurso mais importante para a produção agrícola. O entendimento dos mecanismos de competição por água pode propiciar o desenvolvimento de novas estratégias de controle ou convivência com determinadas espécies de plantas daninhas, principalmente nas situações em que a água é escassa. Objetivou-se com este trabalho avaliar a competição entre feijão-caupi e plantas daninhas por água sob o efeito no crescimento das plantas. Foi realizado experimento em casa de vegetação no período de setembro a novembro de 2015, em delineamento em blocos casualizado, com quatro repetições. Os tratamentos foram arranjados em fatorial 5 x 2, com o primeiro fator correspondente aos arranjos de competição entre as espécies (feijão-caupi + trapoeraba; feijão-caupi + malva-branca; feijão-caupi, trapoeraba e malva-branca em monocultivo), e o segundo dos regimes hídricos (irrigado e déficit hídrico). O déficit hídrico reduz o crescimento das plantas de feijão-caupi, Commelina benghalensis e Waltheria indica. A competição entre plantas aumenta os efeitos do déficit hídrico temporário no solo. A folha de W. indica é o órgão mais afetado pelo déficit hídrico. A espécie daninha W. indica tem maior capacidade de competição por água com o feijão-caupi do que a C. benghalensis. Palavras-chave: Commelina benghalensis; interferência; Vigna unguiculata; Waltheria indica; estresse hídricoCompetition between cowpea and weeds for water: Effect on plants growth Rev. Bras.

show abstract

“…Ferreira, Gonçalves e Ferraz (2012) relatam que a deficiência hídrica afeta as trocas gasosas nas folhas, assim como outros processos de ordem fisiológicas conexos ao crescimento vegetal. Tendo em vista que a água é uma das principais responsáveis na manutenção da transpiração e da condutância estomática, sendo fundamental para a permeabilidade de CO2 no mesófilo foliar (DUTRA et al, 2015). Contudo, neste experimento, nenhumas das características fisiológicas analisadas tiveram diferenciações estatísticas entre os tratamentos com as diferentes lâminas de irrigação (Tabela 2).…”

Section: Resultsunclassified

ACLIMATIZAÇÃO DE MUDAS MICROPROPAGADAS DE Anthurium maricense COM DIFERENTES LÂMINAS DE IRRIGAÇÃO

Campos

Bomfim

Carvalho

et al. 2019

R_I

View full text Add to dashboard Cite

ACLIMATIZAÇÃO DE MUDAS MICROPROPAGADAS DE Anthurium maricense COM DIFERENTES LÂMINAS DE IRRIGAÇÃO ARLENE SANTISTEBAN CAMPOS1; GUILHERME VIEIRA DO BOMFIM2; ANA CRISTINA PORTUGAL PINTO DE CARVALHO3; BENITO MOREIRA DE AZEVEDO2; ANA CECÍLIA RIBEIRO DE CASTRO3 E DENISE VIEIRA VASCONCELOS4 1Departamento de ciência do solo, Universidade Federal do Ceará, Av. Mister Hull, 2977, Campus do Pici, CEP: 60356-001, Fortaleza, Ceará, Brasil, arlenesan@yahoo.com.br. 2Departamento de engenharia agrícola, Universidade Federal do Ceará, Av. Mister Hull, 2977, Campus do Pici, CEP: 60356-001, Fortaleza, Ceará, Brasil, guile2007@gmail.com, benito@ufc.br. 3Embrapa Agroindústria Tropical, Rua Pernambuco, 2270, Pici, CEP 60511-110, Fortaleza, Ceará, Brasil, cristina.carvalho@embrapa.br, cecilia.castro@embrapa.br. 4Instituto Federal de Educação, Ciência e Tecnologia do Pará, Estrada de Ferro de Bragança, s/nº, Taíra, CEP: 68600-000, Bragança, Pará, Brasil, denisevasconcelos@hotmail.com. 1 RESUMO O objetivo deste trabalho foi avaliar a influência de diferentes lâminas de irrigação na aclimatização de mudas micropropagadas de Anthurium maricense. O delineamento experimental foi o completamente ao acaso, composto por cinco tratamentos e quatro repetições de quatro mudas cada. Os tratamentos foram as lâminas de irrigação estimadas com cinco percentuais da capacidade de retenção de água (CRA) do substrato: 50; 75; 100; 125; e 150% da CRA. As mudas foram cultivadas individualmente em vasos de 415 mL contendo o substrato comercial HS Flores®. Durante a aclimatização, as mudas foram irrigadas duas vezes ao dia e receberam adubações foliares em dias alternados. Foram analisadas as variáveis: incremento na altura da muda (IAM); incremento no número de folhas por muda (INF); incremento na área da maior folha (IAMF); ocupação de vaso (OV); taxa de fotossíntese líquida (A); carbono interno (Ci); e temperatura (Ti) e umidade (Ui) foliar. Com base nos resultados, supõe-se que as mudas de A. maricense possam apresentar evidência de resistência ao déficit hídrico. A lâmina de irrigação estimada com 150% da CRA proporciona o maior valor de IAMF. Lâminas de irrigação intermediárias, entre 100 e 125% da CRA, proporcionam os maiores valores de IAM, INF e OV. Palavras-chave: antúrio, plantas ornamentais, manejo da irrigação. CAMPOS, A. S.; BOMFIM, G. V. do; CARVALHO, A. C. P. P. de; AZEVEDO, B. M. de; CASTRO, A. C. R. de; VASCONCELOS, D. V. ACLIMATIZATION OF MICROPROPAGATE PLANTLETS OF Anthurium maricense WITH DIFFERENT IRRIGATION DEPHTS 2 ABSTRACT The aim of this study was to evaluate the development of micropropagated plantlets of Anthurium maricense during the acclimatization phase in screen environment, under different irrigation depths based on percentages of water retention capacity (WRC), on the weather conditions in the greenhouse environment. The experimental design was completely randomized, composed of five irrigation depths, with four replicates and four plantlets per plot. The treatments consisted of irrigation depths estimated with five levels of water retention capacity (WRC) of the substrate: 50; 75; 100; 125; and 150% of WRC. The plantlets were cultivated in 415 mL pots with HS Flowers® substrate. During the acclimatization, all plantlets were irrigated twice a day and fertilized, on alternate days, with leaf fertilization. The variables analyzed were: plant height increment (PHI); number of leaves increment (NLI); largest leaf area increment (LLAI); pot occupation (PO); net photosynthetic rate (A); internal carbon (Ci); leaf temperature (Ti) and leaf moisture (Ui). Based on the results obtained, it is assumed that A. maricense micropropagated plantlets may present evidence of resistance to water deficit. The estimated irrigation depth of 150% of WRC provides the highest value of LLAV. Intermediate irrigation depth, between 100 and 125% of the WRC, provide the highest values of PHV, NLV and PO. Keywords: anthurium, ornamental plant, irrigation management.

show abstract

Parâmetros fisiológicos e componentes de produção de feijão-caupi cultivado sob deficiência hídrica

Cited by 29 publications

References 14 publications

Yield and water use efficiency of cowpea under water deficit

Yield and water use efficiency of cowpea under water deficit

Competition between cowpea and weeds for water: Effect on plants growth

ACLIMATIZAÇÃO DE MUDAS MICROPROPAGADAS DE Anthurium maricense COM DIFERENTES LÂMINAS DE IRRIGAÇÃO

Contact Info

Product

Resources

About