Interação entre disponibilidade de água e compactação do solo no crescimento e na produção de feijoeiro

Gubiani, Paulo Ivonir; Reichert, José Miguel; Reinert, Dalvan José

doi:10.1590/s0100-06832014000300008

Cited by 20 publications

(25 citation statements)

References 23 publications

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“…Santos (2017), afirma que a análise da variável área foliar se mostra de grande importância visto que os resultados obtidos fazem desse um importante parâmetro a ser considerado na hora do estudo da planta a ser instalada em solo compactado, o que afeta diretamente a produtividade. Já Gubiani (2014) certifica que a compactação do solo limita o acesso de água pelas plantas e intensifica o estresse hídrico, assim, parte dessas perdas está sendo causada pela compactação do solo, fator que interfere diretamente na área foliar por favorecer a perda por evapotranspiração e não sendo compensado por absorção, limitando o seu crescimento aéreo.…”

Section: Resultsunclassified

INFLUÊNCIA DA COMPACTAÇÃO DO SOLO NO DESENVOLVIMENTO DO SISTEMA RADICULAR DO FEIJÃO (Phaseolus vulgaris L.)

Ferraz¹,

Silva²,

Rocha³

et al. 2017

Agrarian

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RESUMOA presente pesquisa reverbera o efeito da compactação do solo no desenvolvimento da cultura do feijão Phaseolus vulgaris L. A pesquisa analisou a compactação do latossolo vermelho amarelo em recipientes, averiguou as características físicas do solo e posteriormente comparou o desenvolvimento do feijoeiro entre o solo sem compactação e o solo com maior redução do volume de lacunas, de maior coesão, resistência e diminuição da permeabilidade. A metodologia utilizada submeteu o latossolo vermelho amarelo distrófico à compactação por densidade. Com isso, a partir da redução dos macroporos pelo efeito da compactação, o resultado foi prejudicial à penetração radicular e hídrica, ocasionando um crescimento vegetal diminuto. PALAVRAS-CHAVE: Compactação; feijão, Física do solo, solo.

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Section: Resultsunclassified

INFLUÊNCIA DA COMPACTAÇÃO DO SOLO NO DESENVOLVIMENTO DO SISTEMA RADICULAR DO FEIJÃO (Phaseolus vulgaris L.)

Ferraz¹,

Silva²,

Rocha³

et al. 2017

Agrarian

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“…Since top soil loses more water (Gubiani et al. ) due to combined effect of evaporation and transpiration (Montanari et al. ), presence of straw on surface layer in systems without tillage (NT‐lowest temperature and amplitude) or minimum tillage (Ch 1 ‐lower temperature than conventional tillage) reduces soil heating (Silva et al.…”

Section: Resultsmentioning

confidence: 99%

Common bean in highly variable weather conditions, on sandy soils, and food security in a subtropical environment

Reichert

Rodrigues

Awe

et al. 2015

Food and Energy Security

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Common bean is a vital component of food security and reduction in malnutrition in developing nations of the world. In a year of low rainfall and high temperature during flowering and high rainfall during grain filling, we studied the effects of (1) water availability and tillage on soil structural formation and on water retention, growth and productivity of common bean, and (2) time series analysis of soil available water and its relationship with related atmospheric variables. Soil management systems consisted of no-tillage (NT), conventional tillage (CT), chiseling 2 days before sowing (Ch 0 ), and 1 year before sowing (Ch 1 ), in complete randomized block design and four replications. Air temperature, rainfall, soil available water, and air capacity were monitored throughout the 78-days bean cycle, and time series analysis of data was performed. Water availability in topsoil reached limiting values, close to the permanent wilting point, limiting proper development of bean at flowering. Water availability was higher in periods of limited rainfall in untilled soils (NT and Ch 1 ). Low soil availability of water and high air temperatures during flowering and grain filling stages affected grain production but grain yield did not differ statistically among tillage systems, which was similar to the average yield obtained in the state of Rio Grande do Sul. Temporal distribution of soil available water did not correlate with daily rainfall but correlated with air temperature. Time series analysis was adequate for estimating soil available water from its previous and related variables. Conservation agriculture (no-tillage and old-chiseling) improves water conditions in soil, but with long periods of water deficit there is no guarantee for high food production; thus, supplementary irrigation may still be necessary to reduce the combined effects of abiotic factors of air temperature and rainfall. 220

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“…Soil compaction limits the volume of soil explored by the roots, reducing the root system growth, and consequently, the development and productivity of several crops (MOURA et al, 2008;GUBIANI; REICHERT; REINERT, 2014;VALADÃO et al, 2015). Information on soil compaction is essential for planning soil management; however, few studies focus on the effects of compaction on physiological aspects of the plant, making it difficult to understand the performance of the cultures in this stress condition (GRZESIAK et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Gas Exchange and Photochemical Efficiency in Lima Bean Genotypes Grown in Compacted Soils

et al. 2018

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-The effects of soil compaction on crop growth and productivity have been well studied in recent years, however, studies on the physiological responses of crops to compaction are scarce. The objective of this study was to evaluate the effect of soil compaction on gas exchange, and photochemical efficiency of lima bean (Phaseolus lunatus L.) genotypes of different growth habits. The experimental design was a randomized block in a 3×4 factorial arrangement, with three lima bean genotypes (Branca-Pequena, Orelha-de-Vó and Roxinha) and four compaction levels (soil densities of 1.1, 1.3, 1.5 and 1.7 g cm -3 ), with four replications. The following variables were evaluated at 38 days after sowing: photosynthetic rate (A), leaf transpiration (E), stomatal conductance (g s ), internal CO 2 concentration (Ci), instantaneous water use efficiency (WUE), intrinsic water use efficiency (iWUE), instantaneous carboxylation efficiency (iCE) and photochemical efficiency (Fo, Fm, Fv and Fv/Fm). The data were subjected to analysis of variance at 5% probability by the F test. The genotypes showed a reduction in the photosynthetic rate with increasing soil compaction. The soil compaction affected the photochemical efficiency of the genotype Orelha-de-Vó, with the Fm and Fv fitting to the linear model, and the Fv/Fm fitting to the quadratic model. The genotype Orelha-de-Vó had the highest rate of E and g s at the soil densities of 1.24 and 1.29 g cm -3 , respectively. Regarding the photosynthetic rate, the genotype Roxinha is more efficient than Branca-Pequena at the soil density of 1.7 g cm -3 .Keywords: Phaseolus lunatus L.. Physical impediment. Photosynthetic rate. TROCAS GASOSAS E EFICIÊNCIA FOTOQUÍMICA DE GENÓTIPOS DE FAVA CULTIVADOS EM SOLO COMPACTADORESUMO -Os efeitos da compactação do solo no crescimento e produtividade das culturas têm sido muito estudados nos últimos anos, porém, as respostas fisiológicas das culturas à compactação não têm recebido a devida atenção. Objetivou-se avaliar o efeito da compactação do solo nas trocas gasosas e na eficiência fotoquímica de genótipos de fava (Phaseolus lunatus L.) de diferentes hábitos de crescimento. O delineamento experimental utilizado foi em blocos casualizados no arranjo fatorial 3 × 4, sendo três genótipos de fava (Branca pequena, Orelha de vó e Roxinha) e quatro níveis de compactação (densidades de solo de 1,1; 1,3; 1,5 e 1,7 g cm -3 ), com quatro repetições. Aos 38 dias após a semeadura, analisaram-se as seguintes variáveis: taxa fotossintética (A), transpiração foliar (E), condutância estomática (g s ), concentração interna de CO 2 (Ci), eficiência instantânea no uso da água (EUA), eficiência intrínseca no uso da água (EIUA), eficiência instantânea de carboxilação (EiC) e eficiência fotoquímica (Fo, Fm, Fv e Fv/Fm). Os dados foram submetidos à análise de variância a 5% de probabilidade pelo teste F. Os genótipos apresentaram redução na taxa fotossintética com aumento da compactação do solo. Houve efeito da compactação do solo na eficiência fotoquímica apenas par...

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Interação entre disponibilidade de água e compactação do solo no crescimento e na produção de feijoeiro

Cited by 20 publications

References 23 publications

INFLUÊNCIA DA COMPACTAÇÃO DO SOLO NO DESENVOLVIMENTO DO SISTEMA RADICULAR DO FEIJÃO (Phaseolus vulgaris L.)

INFLUÊNCIA DA COMPACTAÇÃO DO SOLO NO DESENVOLVIMENTO DO SISTEMA RADICULAR DO FEIJÃO (Phaseolus vulgaris L.)

Common bean in highly variable weather conditions, on sandy soils, and food security in a subtropical environment

Gas Exchange and Photochemical Efficiency in Lima Bean Genotypes Grown in Compacted Soils

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