Intervalo hídrico ótimo e compactação do solo com cultivo consorciado de milho e braquiária

Calonego, Juliano Carlos; Borghi, Émerson; Crusciol, Carlos Alexandre Costa

doi:10.1590/s0100-06832011000600033

Cited by 38 publications

(24 citation statements)

References 22 publications

(32 reference statements)

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“…Under this condition, the literature reports restrictions to root growth (Bergamin et al, 2010a,b). In soils with adequate physical properties, LLWR corresponds to the available water range, with the field capacity as the upper limit and the permanent wilting point the lower limit (Calonego et al, 2011). However, LLWR is decreased when aeration and soil penetration resistance replace the field capacity and permanent wilting point as upper and lower limits, respectively (Lima, 2011).…”

Section: Resultsmentioning

confidence: 99%

Least Limiting Water Range and Load Bearing Capacity of Soil under Types of Tractor-Trailers for Mechanical Harvesting of Green Sugarcane

Pereira

Vitorino

Prado

et al. 2015

Rev. Bras. Ciênc. Solo

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The expansion of the sugarcane industry in Brazil has intensified the mechanization of agriculture and caused effects on the soil physical quality. the purpose of this study was to evaluate the limiting water range and soil bearing capacity of a Latossolo vermelho distroférrico típico (Rhodic Hapludox) under the influence of different tractor-trailers used in mechanical sugarcane harvesting. the experiment was arranged in a randomized block design with five replications. The treatments consisted of green sugarcane harvesting with: harvester without trailer (t1); harvester with two trailers with a capacity of 10 mg each (t2); harvester with trailer with a capacity of 20 mg (t3) and harvester and truck with trailer with a capacity of 20 mg (10 mg per compartment) (t4). the least limiting water range and soil bearing capacity were evaluated. the transport equipment to remove the harvested sugarcane from the field (trailer) at harvest decreased the least limiting water range, reducing the structural soil quality. the truck trailer caused the greatest impact on the soil physical properties studied. the soil load bearing capacity was unaffected by the treatments, since the pressure of the harvester (t1) exceeded the pre-consolidation pressure of the soil.

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Section: Resultsmentioning

confidence: 99%

Least Limiting Water Range and Load Bearing Capacity of Soil under Types of Tractor-Trailers for Mechanical Harvesting of Green Sugarcane

Pereira

Vitorino

Prado

et al. 2015

Rev. Bras. Ciênc. Solo

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“…The species from Urochloa genus have potential to improve the soil physical conditions (Calonego et al, 2011a).…”

Section: Introductionmentioning

confidence: 99%

Shoot and root development of brachiaria grass (Urochloa ruziziensis) under different levels of soil density

Pacheco¹,

Miguel²,

Souza³

et al. 2016

Aust J Crop Sci

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For mitigation of negative effects of human activities on the soil density, the use of cover crops in no-tillage system (NTS) has been strongly recommended. This study aims to evaluate the shoot and root development of Urochloa ruziziensis subjected to soil density levels in dystrophic Oxisol. The experiment was conducted in a greenhouse with a completely randomized design, with five treatments and four replications. The treatments consisted of U. ruziziensis submitted to five levels of soil density (1.0, 1.2, 1.4, 1.6 and 1.8 Mg m -3 ), twenty experimental units in total. The Urochloa ruziziensis showed reduced plant height, leaf area and number of leaves with increasing soil density, resulting in morphological and physiological changes from densities higher than 1.6 Mg m -3 . However, these results demonstrate the ability of this species to break the compacted ground and form biopores. The Oxisols value of 1.4 Mg m -3 is restrictive for the plant growth and development.

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“…O solo é manejado de forma sustentável e viável economicamente quando relacionado aos modelos mais especializados (SOUZA et al, 2008;NASCIMENTO & CARVALHO, 2011). O cultivo de grãos em consórcio com forrageiras reflete de forma positiva nas propriedades do solo, pois o alto volume de raízes em profundidade e produção de matéria orgânica, aumenta a reciclagem de nutrientes (CRUSCIOL & BORGHI, 2007;CALONEGO et al, 2011). Possibilita também, em função do uso racional da terra, maior produção por área quando comparado ao monocultivo (BRINTHA & SERAN, 2009;GUEDES et al, 2010;SOUZA et al, 2011).…”

Section: Introductionunclassified

Desenvolvimento Da Soja Em Sistemas De Integração Lavourapecuária-Floresta

Silva¹,

Sales²,

Veloso³

2015

Enciclopédia Biosfera

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RESUMOO cultivo da soja distingue-se por ser a principal atividade responsável pela expansão da fronteira agrícola no País, sendo assim, necessário a utilização de sistemas que torne o cultivo sustentável. Objetivou-se avaliar o desenvolvimento da soja cultivada em diferentes sistemas. O experimento foi realizado no campo experimental da Embrapa Amazônia Oriental, Paragominas, Pará. Os tratamentos foram compostos por três sistemas de cultivo de soja, em sistema iLPF (consórcio com Brachiaria ruziziensis e intercalado com mogno africano), Santa Fé e Convencional. Determinou-se a produtividade de grãos da cultura, teor de umidade dos grãos (%); estande de plantas, altura de planta e de inserção da primeira vagem. Os valores de altura de planta e inserção da primeira vagem não apresentaram diferença significativa entre os sistemas em estudo. Em relação à produtividade de grãos, não houve diferença significativa entre os sistemas em estudo. Entretanto, verificou-se que os sistemas Santa Fé e iLPF com população cerca de 10,37% e 11,2%, respectivamente, menor do que o sistema Convencional, apresentaram maior produção por indivíduo, ou seja, em torno de 0,020 e 0,019 kg.planta -1 , respectivamente, obtendo média de 200 kg.ha -1 a mais do que o sistema Convencional em função da quantidade de indivíduos. A soja cultivar sambaiba em consórcio com Brachiaria ruziziensis não sofreu redução na produtividade de grãos por área e obteve ganho na produção de grãos por indivíduo quando comparado ao sistema Convencional. PALAVRAS-CHAVE: Características agronômicas, consórcio de culturas, produção de grãos, DEVELOPMENT OF SOYBEAN INTEGRATION IN SYSTEMS CROP-LIVESTOCK-FORESTABSTRACT The cultivation of soybean is distinguished for being the main activity responsible for the expansion of the agricultural frontier in Brazil, therefore, necessary to use systems that make sustainable cultivation. It is aimed to evaluate the development of

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Intervalo hídrico ótimo e compactação do solo com cultivo consorciado de milho e braquiária

Cited by 38 publications

References 22 publications

Least Limiting Water Range and Load Bearing Capacity of Soil under Types of Tractor-Trailers for Mechanical Harvesting of Green Sugarcane

Least Limiting Water Range and Load Bearing Capacity of Soil under Types of Tractor-Trailers for Mechanical Harvesting of Green Sugarcane

Shoot and root development of brachiaria grass (Urochloa ruziziensis) under different levels of soil density

Desenvolvimento Da Soja Em Sistemas De Integração Lavourapecuária-Floresta

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