Resistência à penetração e rendimento da soja após intervenção mecânica em latossolo vermelho sob plantio direto

Drescher, Marta Sandra; Eltz, Flávio Luiz Foletto; Denardin, J. E.; Faganello, A.; Drescher, Gerson Laerson

doi:10.1590/s0100-06832012000600018

Cited by 22 publications

(23 citation statements)

References 29 publications

(27 reference statements)

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“…In the depth layers of 0.30 -0.40 m occurred significant effect of management systems studied on soil PR, being the NTc and NTcc systems with the highest value ( Table 2). According to LIMA et al, (2010), values from 1.9 MPa can affect the plants height in the soybean crop, a value below the ones found in this study, especially in the depth layers of 0.20 -0.30 and 0.30 -0.40 m. In general, when observing the PR values in the studied layers, for the NT, it is notorious that they are above of the considered critical to the development of the root system, it may be justified because it is a system with a minimum tillage, particularly in the depth layer of 0.20 to 0.30 m. CHEBURIN et al (2011) found similar results and when they studied the soil PR variability, they found values higher than the considered critical to a depth of 0.40 m; and also by DRESCHER et al (2012). In the depth layers of 0.40 -0.50 and 0.50 -0.60 m, there was no significant effect on any of the management systems studied on soil PR, and also the presence of higher values, because they are depths that do not have any type of tillage.…”

Section: Resultsmentioning

confidence: 92%

Penetration resistance and agronomic characteristics of soybean affected by soil management and sowing speed systems

et al. 2016

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ABSTRACT:With the short period of the sowing process, we observed an increase in the seeder speed set in several soil management systems that may result in decreased soybean yield and problems with penetration resistance. We aimed to assess the penetration resistance (PR) and agronomic characteristics of soybean on soil tillage and sowing speed. The randomized block design in split plot with four replications was used. The treatments consisted of six management systems, applied to the plots: no tillage (NT), no tillage and chiseling (NTc), no tillage and cross chiseling (NTcc), conventional tillage (CT), reduced tillage (RT) and conservation tillage (CsT) and four speeds, (4.6; 5.5; 7,3 and 7.8 km h -1 ) applied in the subplot at the time of soybean seeding. We observed in the deep layers 0.0 -0.10; 0.10 -0.20 and 0.20 -0.30 m significant effect of tillage systems on the PR of the soil. The NT system showed the highest value of PR compared to other management systems studied. In the NT should be used sowing speeds above 5.5 km h -¹ to decrease the compression. Low speeds favor higher yield by improving pods per plant. Speeds in the working range (5-7 km h -1 ) promote higher productivity by improving the number of pods per plant, and provide better stand.

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Section: Resultsmentioning

confidence: 92%

Penetration resistance and agronomic characteristics of soybean affected by soil management and sowing speed systems

et al. 2016

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“…It was found in some studies that the critical limit is 2500 kPa in soils under pasture (Lanzanova et al, 2007) and 3500 kPa in soils under a no-tillage system (Tormena et al, 2007). In a dystrophic Ferralsol with a no-tillage system in the South of Brazil, Drescher et al (2012) found penetration resistance values higher than 2000 kPa, especially in the layer between 10 and 12 cm.…”

Section: Resultsmentioning

confidence: 99%

Effect of cover crops on physico-chemical attributes of soil in a short-term experiment in the southwestern Amazon region

Passos¹,

Aker²,

Costa³

et al. 2017

Afr. J. Agric. Res.

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No-tillage is an agricultural system that is proposed as a sustainable soil management system. This paper aims to evaluate the short-term effects of cover crops on a no-tillage system, by assessing a number of physical and chemical attributes of soil of the Brazilian Amazon region. The experiment was carried out in a typical Ferralsol under a no-tillage system from March to December, 2014. A randomized block design, with four replicates was used. The performance and effects of fourteen cover crops (Cajanus cajan, Canavalia ensiformis, Crotalaria juncea, Crotalaria ochroleuca, Crotalaria spectabilis, Stizolobium aterrima, Stizolobium cinereum, Pennisetum glaucum, Sorghum bicolor, Sorghum sudanense, Urochloa brizanha cv. Xaraés, Urochloa brizantha cv. Piatã and Urochloa ruziziensis and Zea mays) and fallow (control treatment) on the soil quality were assessed. The cover crops were sown in the off season in April 2014, before the summer crop (maize). The levels of P, K, Ca 2+ , Mg 2+ , Al 3+ , H+Al, saturation by aluminum, sum of bases, organic matter, pH and resistance to soil penetration were evaluated following the end of the cover crops growth. Some near-surface soil attributes were affected by the cover crops. Urochloa species improved the levels of potassium in the soil at depths up to 5 cm below the surface. The highest penetration resistance was observed in the superficial layer between 12 and 16 cm deep, with penetration resistance values varying between 2472 and 2912 kPa. The Urochloa exhibited satisfactory agronomic performance when grown under a simulated crop livestock integration system. It is concluded that the use of cover crops in a no-till system has the potential to improve the chemical quality of soil in the Southwestern Amazon region.

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“…Resultados similares foram obtidos com grãos de soja em SPD de oito anos em Latossolo Vermelho de textura argilosa, onde as intervenções mecânicas foram feitas com arado de discos, com grade de discos e escarificador com rolo destorroador, justificando-se estes resultados pela boa distribuição de chuvas que amenizaram o efeito prejudicial da compactação da camada subsuperficial do solo sobre o crescimento das raízes (Drescher et al, 2012).…”

Section: Resultsunclassified

Revolvimento Ocasional e Calagem em Latossolo Muito Argiloso em Sistema Plantio Direto Consolidado

Fidalski

Yagi

Tormena

2015

Rev. Bras. Ciênc. Solo

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ResumoA ocorrência de concentração de nutrientes e compactação superficial tem sido relatada após longo tempo de implantação do sistema plantio direto. o objetivo deste estudo foi avaliar os atributos químicos, a densidade do solo e a produtividade das culturas subsequentes a uma única intervenção mecânica complementada com calagem de um latossolo vermelho Distroférrico textura muito argilosa conduzido em sistema plantio direto há 17 anos ininterruptos, em Pato Branco, no sudoeste do Paraná. o delineamento experimental utilizado foi de blocos ao acaso no esquema de parcelas subdivididas, com aração e gradagem do solo nas parcelas (sem e com revolvimento do solo com aração a 0,00-0,20 m e gradagem) e calagem nas subparcelas (sem e com calagem para elevar o índice de saturação por bases a 70 %). Foram avaliados a densidade do solo e a produtividade das culturas de milho (6° mês), biomassa de aveia-preta (12° mês) e soja (20º mês) e os atributos químicos do solo (6° mês). o revolvimento ocasional do solo com aração e gradagem em sistema plantio direto consolidado teve duração efêmera de seis meses na redução da densidade do solo. a incorporação do calcário não apresentou vantagens em relação à sua aplicação na superfície do solo. não houve aumentos de produtividade das culturas subsequentes à calagem e ao revolvimento do solo. as produtividades das culturas de milho, aveia-preta e soja não dependeram do revolvimento e da incorporação de calcário nessa área agrícola. Palavras-chave: compactação do solo, densidade do solo, acidez do solo, manejo do solo.Recebido para publicação em 15 de julho de 2014 e aprovado em 15 de maio de 2015.

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Resistência à penetração e rendimento da soja após intervenção mecânica em latossolo vermelho sob plantio direto

Cited by 22 publications

References 29 publications

Penetration resistance and agronomic characteristics of soybean affected by soil management and sowing speed systems

Penetration resistance and agronomic characteristics of soybean affected by soil management and sowing speed systems

Effect of cover crops on physico-chemical attributes of soil in a short-term experiment in the southwestern Amazon region

Revolvimento Ocasional e Calagem em Latossolo Muito Argiloso em Sistema Plantio Direto Consolidado

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