Intervalo hídrico ótimo de um latossolo vermelho distrófico, após o primeiro período de pastejo contínuo de brachiaria ruziziensis, em sistema integração lavoura-pecuária

Fidalski, Jonez; Tormena, Cássio Antônio; Alves, Sebastião

doi:10.1590/s0100-06832013000300024

Cited by 15 publications

(12 citation statements)

References 28 publications

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“…This fact has occurred because of a raise in PR, which consisted of a limiting factor of LLWR (Table 3 and Figure 2). These findings corroborate those observed by Imhoff et al (2001), Petean et al (2010) and Fidalski et al (2013).…”

Section: ---------------------------------------------%--------------supporting

confidence: 92%

Impacts of land-use and management systems on organic carbon and water-physical properties of a Latossolo Amarelo (Oxisol)

Silva

Santos

Nóbrega

et al. 2017

SCA

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The Cerrado biome has outstanding territorial relevance in the state of Piauí, in which weather conditions, relief and favorable soil has made this region one reference in food production. This study focused to evaluate the effects of different land uses, management systems and their respective terms on organic carbon content and physical properties of a Latossolo Amarelo (Oxisol) in the Southwestern Piauí state. The study was performed in the city of Uruçuí, situated in the southwestern Piauí state. We assessed nine farming areas with different backgrounds regarding land-use, management system and run time. The treatments consisted of areas under no-till for 3 and 6 years (NT3 and NT6), under pasture for 2 and 5 years (PA2 and PA6), under eucalyptus plantation for six and twelve years (EU6 and EU12), under conventional tillage for two and 8 years (CT2 and CT8) and under native Cerrado (NC), which represented a reference condition. Conversion of the native Cerrado into no-till and grazing areas increased soil organic carbon content over time.

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Section: ---------------------------------------------%--------------supporting

confidence: 92%

Impacts of land-use and management systems on organic carbon and water-physical properties of a Latossolo Amarelo (Oxisol)

Silva

Santos

Nóbrega

et al. 2017

SCA

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“…A RP correlacionou-se diretamente à D s , independentemente da camada avaliada, e inversamente ao θ, diferentemente em cada camada. Os valores de RP aumentaram em profundidade, em razão do aumento do teor de argila, o que também foi verificado por Fidalski et al (2013). No sistema de ILP avaliado com soja e braquiária, em solo com camada superficial arenosa, as curvas de retenção de água do solo foram mais sensíveis aos tratamentos do que a curva de RP, o que contraria resultados anteriores em Latossolo Vermelho distrófico, com textura franco-arenosa, sob diferentes sistemas de produção, na região Noroeste do Paraná (Guimarães et al, 2013).…”

Section: Resultsunclassified

“…Esta metodologia vem sendo utilizada para acessar a qualidade física do solo em vários tipos de experimento, alguns dos quais, inclusive, avaliam o efeito da altura de pastejo sobre a frequência relativa de amostras de solo com D s acima do valor da D sc (Petean et al, 2010;Fidalski et al, 2013;Moreira et al, 2014). Contudo, ainda não foram avaliados os efeitos do sistema plantio direto da soja sobre o resíduo remanescente da pastagem no sistema ILP, nem os efeitos integrados das alturas de pastejo e do cultivo da soja sobre a qualidade física do solo, avaliada com os indicadores IHO, D sc e COT.…”

Section: Introductionunclassified

Qualidade física de Latossolo Vermelho em sistema de integração lavoura-pecuária após cultivo de soja e pastejo em braquiária

Fidalski

2015

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito da altura de pastejo em braquiária (Urochloa brizantha) sobre o carbono orgânico total e a qualidade física de Latossolo Vermelho, após cultivos de soja e períodos de pastejo em braquiária, em sistema integração lavoura-pecuária (ILP). Utilizou-se o delineamento de blocos ao acaso, com quatro tratamentos (alturas de pastejo de 0,10, 0,20, 0,30 e 0,40 m) e três repetições, no quarto e quinto anos após a implantação do ILP. As amostras de solo, coletadas das camadas de 0,00-0,10 e 0,10-0,20 m, apresentaram textura arenosa: 126 e 132 g kg -1 de argila, respectivamente. Foram avaliadas as seguintes variáveis: carbono orgânico total, densidade do solo (D s ), intervalo hídrico ótimo (IHO) e densidade do solo crítica (D sc ). A qualidade física do solo no sistema ILP depende do manejo da altura de pastejo em braquiária no outono-inverno. A altura de pastejo de 0,27 m proporcionou os maiores valores de carbono orgânico total e IHO mais amplo à profundidade de 0,10-0,20 m. O cultivo da braquiária reduz mais a frequência de amostras de solo com D s >D sc do que o cultivo da soja, e o manejo da altura de pastejo da braquiária contribui para o aumento da qualidade física do solo.Termos para indexação: carbono orgânico total, compactação do solo, densidade do solo crítica, intervalo hídrico ótimo, plantio direto, solos arenosos. Physical quality of Haplorthox in a crop-livestock integration system after soybean cropping and palisade grass grazingAbstract -The objective of this work was to evaluate the effect of grazing height of palisade grass (Urochloa brizantha) on total organic carbon and on the physical quality of a Haplorthox (Rhodic Ferralsol), after soybean cropping and grazing periods on palisade grass, in a integrated crop-livestock system (ICL). A randomized complete block design with four treatments (grazing heights at 0.10, 0.20, 0.30, and 0.40 m) and three replicates was used, in the fourth and fifth years after the implementation of the ICL. Soil samples, taken from the 0-0.10 and 0.10-0.20-m soil depths, had sandy texture: 126 and 132 g kg -1 clay, respectively. The following variables were evaluated: total organic carbon, soil bulk density (D b ), least-limiting water range (LLWR), and critical soil bulk density (D bc ). The physical quality of soil in the ICL system depends on the grazing height management on palisade grass in the autumn-winter period. Grazing height at 0.27 m provided the greatest values of total organic carbon and wider LLWR at 0.10-0.20-m soil depths. Palisade grass cultivation decreases more the frequency of soil samples with D b >D bc than soybean cropping, and grazing height of palisade grass contributes to the improvement of soil physical quality.

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“…The soil was classified as a typic dystrophic Red Latosol (SANTOS et al, 2006, apud FIDALSKI;TORMENA;ALVES, 2013), with a medium/sandy texture (EMBRAPA, 1984;FASOLO et al, 1998, apud FIDALSKI;TORMENA;ALVES, 2013). Levels of sand, silt and clay are shown in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Soybean productivity under different grazing heights ofBrachiaria ruziziensisin an integrated crop-livestock system

Ferreira

Oliveira

Alves

et al. 2015

Revista Ciência Agronômica

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Soybean productivity under different grazing heights ofABSTRACT -The aim was to evaluate the effects of grazing height of Brachiaria ruziziensis on the production of straw, and the establishment and grain yield of a soybean crop, under an integrated crop-livestock system, on a typic dystrophic Red Latosol at the Experimental Farm of the Agronomic Institute of Paraná (IAPAR), in Xambrê, in the state of Paraná, Brazil (PR). The study was carried out between September of 2010 and April of 2012. The experimental design was of randomised blocks, in lots split over time, with five treatments and three replications. The following were determined for the Brachiaria ruziziensis: shoot dry matter weight, plant residue dry matter weight, and total dry matter weight (Brachiaria ruziziensis shoot weight + plant residue weight). Also determined were variables related to the yield of the soybean crop (number of plants per metre, plant height and grain productivity), for the crop years 2010/2011 and 2011/2012. Straw production is greater in areas of Brachiaria ruziziensis where there is no grazing compared to areas where grazing occurs; the high production seen in areas with greater grazing heights should also be noted. The final number of plants, plant height and productivity in the soybean were not affected by the grazing height of the Brachiaria ruziziensis.

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Intervalo hídrico ótimo de um latossolo vermelho distrófico, após o primeiro período de pastejo contínuo de brachiaria ruziziensis, em sistema integração lavoura-pecuária

Abstract: RESUMO O intervalo hídrico ótimo (IHO) destaca-se como um dos melhores indicadores

Cited by 15 publications

References 28 publications

Impacts of land-use and management systems on organic carbon and water-physical properties of a Latossolo Amarelo (Oxisol)

Impacts of land-use and management systems on organic carbon and water-physical properties of a Latossolo Amarelo (Oxisol)

Qualidade física de Latossolo Vermelho em sistema de integração lavoura-pecuária após cultivo de soja e pastejo em braquiária

Soybean productivity under different grazing heights ofBrachiaria ruziziensisin an integrated crop-livestock system

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