Escarificação e adubação orgânica: efeito na recuperação estrutural de solo produzindo Tifton 85

Colussi, G.; Silva, Leandro Souza da; Minato, Evandro Antonio

doi:10.1590/0103-8478cr20131670

Cited by 7 publications

(14 citation statements)

References 8 publications

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“…Furthermore, there was a probable influence of the soil compaction, which can be induced the fragmentation of macropores into micropores. The values were similar to those observed by Magalhães et al (2009) in an Ultisol, but distinct to the results obteined by Colussi, Silva and Minato (2014), in a Alfisol cultivated with Tifton 85 and located in the Southwest region of the state of Paraná, Brazil. These authors found values for Micro above 0.46 m 3 m -3 , which can be associated to the distinct soil class and the scarifier use, which implies soil structural changes.…”

Section: Resultssupporting

confidence: 87%

“…has been prominent among other forage grasses. This specie is characterized by a dense root system with fast renewal, which confers the capacity of the biological soil decompression and the structure recovery of physically degraded soils (MAGALHÃES et al, 2009;COLUSSI;MINATO, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…However, the intensification of soil use due to irrigation may lead to its structure compaction, considering the positive correlation between soil water content and susceptibility to compaction . This phenomenon often increment soil bulk density and reduces pore volume, affecting soil water infiltration, soil aeration and water availability to plants, which raises the risk of erosion and impairs roots elongation (SHI et al, 2012;COLUSSI;MINATO, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…In these production systems, there is a high demand for nutrients, which must be supplied continuously. Considering this fact, the organic fertilization may be a promising strategy, since it provides gradual release of nutrients, resulting in benefits to crops and to soil physical quality (COLUSSI; SILVA; MINATO, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Soil Physical Quality After Nitrogen Fertilizers Use in Irrigated Pasture of Tifton 85

Melo

Guimarães

Silva

et al. 2017

RSA

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-Tifton 85 (Cynodon sp.) is a forage crop widely used for the voluminous production, but it has also the potential to promote preservation or improvement in soil structural quality, when well managed. The aim of this work was to evaluate the soil physical quality in a rotational grazing area of Tifton 85 under irrigation in Prudente de Morais, MG, Brazil, due to the application of mineral and organic nitrogen fertilizers. The treatments included different forms of N supply: 400 kg ha -1 of urea; 400 kg ha -1 of bovine manure; 400 kg ha -1 of urea and manure, in proportion 1:1 and the control, without nitrogen fertilization. The following soil physical quality indicators were determined in the layers 0.0-0.05 m and 0.05-0.10 m after two years of N application: water retention curve, total porosity, macroporosity, microporosity, soil bulk density, available water capacity, bulk soil air capacity, soil matrix air capacity and relative water capacity. There were differences among the treatments, in both layers. In general, the treatments using bovine manure promoted greater water storage and availability, which was related to the increase of the microporosity, due to the organic matter effect. However, these same treatments presented a relative compaction, which was associated to the maintenance of higher soil moistures. It was concluded that, even under the effects of intensive grazing, there was generally adequate soil physical quality, but a special attention is recommended to the soil susceptibility to compaction.Keywords -water availability, soil aeration, organic fertilization, Cynodon sp.Resumo -O Tifton 85 (Cynodon sp.) é uma cultura forrageira muito utilizada para a produção de volumosos, mas também demonstra potencial para promover preservação ou melhoria da qualidade estrutural do solo, quando bem manejada. O objetivo deste trabalho foi avaliar a qualidade física do solo em área de pastejo rotacionado de Tifton 85 irrigado em Prudente de Morais, MG, Brasil, em função da aplicação de adubos nitrogenados de origem mineral e orgânica. Os tratamentos incluíram diferentes formas de suprimento de N: 400 kg ha -1 de ureia; 400 kg ha -1 de esterco bovino; 400 kg ha -1 de ureia e esterco, na proporção 1:1 e a testemunha, sem adubação nitrogenada. Determinaram-se os seguintes indicadores de qualidade física do solo nas camadas 0.0-0.05 e 0.05-0.10 m, após dois anos de manejo: curva de retenção de água, porosidade total, macroporosidade, microporosidade, densidade do solo, capacidade de água disponível, capacidade de aeração do solo, capacidade de aeração da matriz do solo e capacidade relativa de água no solo. Houve diferenças entre os tratamentos, em ambas as camadas. Em geral, os tratamentos com o uso de esterco promoveram maior retenção e disponibilidade de água, o que foi relacionado ao incremento da microporosidade, devido ao efeito da matéria orgânica. No entanto, esses mesmos tratamentos apresentaram uma relativa compactação, o que foi associado à manutenção de maiores umidades no solo. Concluiu-se ...

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Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Soil Physical Quality After Nitrogen Fertilizers Use in Irrigated Pasture of Tifton 85

Melo

Guimarães

Silva

et al. 2017

RSA

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“…Essa gramínea é caracterizada por um sistema radicular robusto e com rápida renovação, atuando na descompactação biológica do solo. Esses fatores permitem, ainda, o emprego da espécie como um instrumento para recuperação de solos fisicamente degradados (COLUSSI et al, 2014).…”

Section: Introductionunclassified

Resistência Do Solo À Penetração Em Pasto De Capim-Tifton 85 Sob Irrigação E Adubação Nitrogenada

Melo¹,

Araujo²,

Guimarães³

et al. 2017

Enci Bio

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RESUMOO uso de adubação orgânica, aliado à irrigação de pastagens com gramíneas vigorosas, podem proporcionar condições favoráveis ao desenvolvimento das plantas, refletindo na melhoria da qualidade estrutural do solo. O objetivo deste trabalho foi avaliar a resistência à penetração de um Latossolo Vermelho distrófico argiloso, cultivado com capim-tifton 85 e adubado com diferentes fontes nitrogenadas, sob sistema irrigado e de sequeiro, com a finalidade de averiguar se há manutenção da qualidade física do solo. Os tratamentos corresponderam a diferentes formas de suprimento de N: 400 kg/ha de N, na forma de ureia (T1); 400 kg/ha de N, na forma orgânica via esterco bovino (T2); 400 kg/ha de N, 50% na forma mineral e 50% na forma orgânica, utilizando-se as mesmas fontes (T3) e a testemunha, sem adubação nitrogenada (T4). Avaliou-se a resistência do solo à penetração (RP) até 50 cm de profundidade. A umidade do solo foi determinada nas camadas 0-20, 20-40 e 40-50 cm. Foram feitas análises de correlação de Pearson entre teor de matéria orgânica no solo (MOS) e RP nas camadas 0-5 e 5-10 cm. Não houve diferença significativa entre formas de adubação nitrogenada (p<0,05), observando-se ausência de correlação significativa entre RP e MOS. No entanto, o uso da irrigação favoreceu a compactação do solo. A fonte de N para adubação de capim-tifton 85 indica ser pouco relevante para induzir modificações na RP, porém o regime hídrico foi um fator significativo, mesmo com a capacidade de descompactação biológica do solo atribuída à espécie utilizada. PALAVRAS-CHAVE: compactação do solo, Cynodon sp., regime hídrico.

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Soil Properties and Plant Biomass Production in Natural Rangeland Management Systems

Werner

Barbosa

Bertol

et al. 2016

Rev. Bras. Ciênc. Solo

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Improper management of rangelands can cause land degradation and reduce the economic efficiency of livestock activity. The aim of this study was to evaluate soil properties and quantify plant biomass production in four natural rangeland management systems in the Santa Catarina Plateau (Planalto Catarinense) of Brazil. The treatments, which included mowed natural rangeland (NR), burned natural rangeland (BR), natural rangeland improved through the introduction of plant species after harrowing (IH), and natural rangeland improved through the introduction of plant species after chisel plowing (IC), were evaluated in a Nitossolo Bruno (Nitisol). In the improved treatments, soil acidity was corrected, phosphate fertilizer was applied, and intercropped annual ryegrass (Lolium multiflorum), velvet grass (Holcus lanatus), and white clover (Trifolium repens) were sown. Management systems with harrowed or chisel plowed soil showed improved soil physical properties; however, the effect decreased over time and values approached those of burned and mowed natural rangelands. Natural rangeland systems in the establishment phase had little influence on soil organic C. The mowed natural rangeland and improved natural rangeland exhibited greater production of grazing material, while burning the field decreased production and increased the proportion of weeds. Improvement of the natural rangelands increased leguminous biomass for pasture.

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Escarificação e adubação orgânica: efeito na recuperação estrutural de solo produzindo Tifton 85

Cited by 7 publications

References 8 publications

Soil Physical Quality After Nitrogen Fertilizers Use in Irrigated Pasture of Tifton 85

Soil Physical Quality After Nitrogen Fertilizers Use in Irrigated Pasture of Tifton 85

Resistência Do Solo À Penetração Em Pasto De Capim-Tifton 85 Sob Irrigação E Adubação Nitrogenada

Soil Properties and Plant Biomass Production in Natural Rangeland Management Systems

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