Atributos físico-hidricos e produtividade de trigo em um Latossolo sob estados de compactação

Bonini, Andréia Kusumota; Secco, Deonir; Santos, Reginaldo Ferreira; Reinert, Dalvan José; Reichert, José Miguel

doi:10.1590/s0103-84782011005000122

Cited by 11 publications

(11 citation statements)

References 8 publications

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“…Increased soil macroporosity with the use of chisel plough, knife runner opener, and raised bed systems may have contributed to increased capacity for water infiltration because water infiltration can decrease when there are compacted layers, due to reduced Macro (Bonini et al, 2011). These results are consistent with studies from Camara and Klein (2005), in which soil tillage to an average depth of 0.25 m increased the water infiltration rate.…”

Section: Discussionsupporting

confidence: 84%

“…A compacted soil layer reduces the water infiltration rate (Bonini et al, 2011) and decreases the least limiting water range in the soil profile (Kaiser et al, 2009). Furthermore, water availability to plants can be reduced as the soil structure is one of factors which directly influence water availability to crops by determining the arrangement of soil particles and therefore the distribution of pore diameters (Klein and Libardi, 2000).…”

Section: Introductionmentioning

confidence: 99%

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Soybean Tillage Systems and Physical Changes in Surface Layers of Two Albaqualf Soils

Sartori

Marchesan

David

et al. 2016

Rev. Bras. Ciênc. Solo

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ABSTRACT:A compacted subsurface soil layer can be a limiting factor for soybean growing, reducing soybean yield. The aim of this study was to evaluate the effect of different tillage systems on the physical properties of two Albaqualf soils of the Central Plains region in the state of Rio Grande do Sul in southern Brazil. Two experiments were conducted: one in Santa Maria, RS, during the 2013/14 and 2014/15 crop seasons, and another in Formigueiro, RS, during the 2013/14 crop season. A randomized block experimental design with four replications was used. The treatments were: sowing using an offset double disc (T1); sowing using a fluted coulter disc (wavy disc with 12 waves) (T2); sowing with a knife runner opener (T3); sowing with a knife runner opener + press wheel mechanism for ground levelling (T4); sowing using a furrow opener upon a raised bed (T5); and chisel plough + sowing using an offset double-disc (T6). In the 2014/15 growing season, the T4 factor was changed using a knife runner opener 0.05 m from the planting row. A smaller reduction in the compacted subsurface soil layer was observed for both T1 and T2, which exhibited high soil bulk density values for the 2013/14 and 2014/15 crop seasons. Furthermore, T3, T5 and T6 led to a reduction in bulk density, and increasing total porosity and macroporosity in the soil, which consequently increased water infiltration, water storage capacity, and crop yield in areas with the presence of a compacted subsurface soil layer.

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Section: Discussionsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Soybean Tillage Systems and Physical Changes in Surface Layers of Two Albaqualf Soils

Sartori

Marchesan

David

et al. 2016

Rev. Bras. Ciênc. Solo

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“…A Dr em alguns casos excedeu o valor de 0,80 considerado crítico para a produtividade da soja conforme Beutler et al (2005). Situação similar foi relatado por Bonini et al (2011), com valor de Dr de 0,83 para produtividade do trigo em Latossolo Vermelho distroférrico (600 g kg -1 de argila). Neste aspecto, Carter (1990) trabalhando em solos arenosos (0,10 kg kg -1 de argila; 0,30 kg kg -1 silte e 0,60 kg kg -1 de areia) obteve máximo rendimento de cereais quando a densidade relativa se manteve entre 0,77 e 0,84.…”

Section: Resultsunclassified

Ensaio de compactação em Latossolo cultivado com milho sob diferentes períodos de adoção de tipos de manejo

Rossetti

Centurion

2015

Agraria

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RESUMODevido à necessidade de se mitigar a compactação do solo, sugere-se o uso preliminar do ensaio de Proctor para a obtenção de valores de referência. E para isso objetivou-se avaliar a influência dos sistemas e períodos de adoção de tipos de manejo por meio da densidade máxima e correlacionar a densidade relativa com o rendimento de grãos de milho e com outros atributos físicos do solo. O delineamento experimental usado foi o de blocos ao acaso, em parcelas subdivididas, com seis repetições, três camadas (0-0,10; 0,10-0,20 e 0,20-0,30) e os tratamentos foram: semeadura direta por 6 anos (SD6), SD8, SD10, respectivamente, preparo convencional (SC) e uma área adjacente de mata nativa (MN). Observou-se que o comportamento das curvas de compactação do solo foi o mesmo em todas as camadas e manejos. Nos Latossolos Vermelhos de textura média, as operações mecanizadas com os tipos de manejo estudados podem ser efetuadas na faixa de umidade 0,14 a 0,20 kg kg -1 sem causar degradação física. Palavras-chave: aeração do solo, matéria orgânica do solo, Proctor normal, Zea mays Soil compaction test in an Oxisol as affected by maize crop managed by different soil tillages ABSTRACTDue to the need for avoiding soil compaction, preliminary use of the proctor test is suggested to obtain reference values. For that purpose, the aim was to evaluate the effect of the systems and time periods of adoption of management techniques by means of maximum density and correlate relative density with maize yield and the others physical attributes of the soil. A completely randomized block design was used in split-plots with six replications and three soil layers (0-0.10, 0.10-0.20 and 0.20-0.30) and the treatments were: no-till planting for 6 years (NT6), NT8, NT10, respectively, conventional tillage system (CT) and an adjacent native forest area (NF). The results showed that the behavior of soil compaction curves was similar in all layers of all treatments. On the Red Oxisol under study, the mechanical operations required for the management systems can be performed in a moisture content 0.14-0.20 kg kg -1 , without causing physical degradation.

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“…This indicates that a moderate compaction increment often increases soil contact with roots, which contributes to a better nutrient absorption. Nevertheless, according to Bonini et al (2011), over compaction directly affects crop yield. These authors evaluated the compaction effect on Rhodic Hapludox in Southern Brazil under field conditions, and observed that the compaction level applied by five steamroller passes resulted in a 23% decrease in wheat yield.…”

Section: Resultsmentioning

confidence: 99%

Wheat cultivars under bulk density levels in Cerrado Rhodic Hapludox, Central Brazil

Bonfim-Silva¹,

AnicÃ©sio²,

Silva³

et al. 2014

Afr. J. Agric. Res.

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The Brazilian Cerrado presents potential to expand its wheat cultivation, but soil compaction is one of the factors that may limit production. The objective of this study was to evaluate production characteristics and chlorophyll index of two wheat cultivars (Triticum aestivum L.) under bulk density levels. The experiment was conducted in a greenhouse, with Rhodic Hapludox collected at 0.00-0.20 m depth. The experimental design was entirely randomized and the treatments were arranged in a 5x2 factorial scheme, corresponding to five bulk densities levels (1.0; 1.2; 1.4; 1.6 and 1.8 Mg m

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Atributos físico-hidricos e produtividade de trigo em um Latossolo sob estados de compactação

Cited by 11 publications

References 8 publications

Soybean Tillage Systems and Physical Changes in Surface Layers of Two Albaqualf Soils

Soybean Tillage Systems and Physical Changes in Surface Layers of Two Albaqualf Soils

Ensaio de compactação em Latossolo cultivado com milho sob diferentes períodos de adoção de tipos de manejo

Wheat cultivars under bulk density levels in Cerrado Rhodic Hapludox, Central Brazil

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