Atributos físicos de um Latossolo Vermelho e produtividade de culturas cultivadas em sucessão e rotação

Genro, Silvio Aymone; Reinert, Dalvan José; Reichert, José Miguel; Albuquerque, Jackson Adriano

doi:10.1590/s0103-84782009000100011

Cited by 28 publications

(12 citation statements)

References 22 publications

(7 reference statements)

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“…Second Reichert et al (2009) the macropores are responsible for the aeration and contribution in the infiltration of water in the soil. For Genro Junior et al (2009), the ideal ratio of macropores to total porosity is 0.33, and indicates a good relationship between aeration capacity and water retention in the soil; thus, according to Table 1, only the medium sand (50%) + organic compost (50%) presented such value, however, there was no statistical difference between the treatments. working with turfgrass of Zoysia japonica (emerald grass), found value of macropores in the soil evaluation of 8.68%.…”

Section: Resultsmentioning

confidence: 94%

Substratos no desenvolvimento de gramado esportivo “Tifton 419"

Santos

Castilho

2018

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Bermuda grass are the most widely used today in high performance sports fields, the cultivar “Tifton 419” is widely indicated for installation in these areas, however, there is no official a recommendation in the literature of the best substrate for the implantation of this species, and research is needed to meet this demand. In this way, the objective of this study was to evaluate the influence of substrates in the development of the “Tifton 419” sporting lawn. The experiment was conducted in field with grass carpets implanted in black plastic containers (volume 8.46 L), in a completely randomized design with five substrates and 12 replicates, with treatments: soil (100%), medium sand (100%), soil (50%) + medium sand (50%), soil (33%) + medium sand (33%) + organic compost (33%) and medium sand (50%) + organic compost (50%). Macro and microporosity, total porosity, density, chlorophyll content (a + b) and fresh and dry leaf mass were evaluated. The results showed that there was influence of the substrate on the development of the turfgrass, with the medium sand (50%) + organic compost (50%) presenting greater increases of fresh and dry mass (1.09 and 0.44 kg m-2), which may lead to higher maintenance costs of the cut, and soil (33%) + medium sand (33%) + organic compost (33%) presented good results of the analyzes performed, being the one recommended for the development of the cultivar “Tifton 419” in sports fields.

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Section: Resultsmentioning

confidence: 94%

Substratos no desenvolvimento de gramado esportivo “Tifton 419"

Santos

Castilho

2018

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“…Soybean cultivars used were BR-16 in 1996, BRS 137 in 1998and 1999, BRS 154 from 2000to 2003, BRS 153 in 2004, BRS 244 RR in 2005, BRS Charrua RR in 2006, BRS 255 RR from 2007to 2009, and BRS Tertúlia RR in 2010, sown preferably in November (in single seeding).…”

Section: Methodsmentioning

confidence: 99%

Grain yield and agronomic traits in soybean according to crop rotation systems

et al. 2014

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The effects of crop rotation systems (CRS) on soybean yield and agronomic characteristics were evaluated from 1996/1997 to 2010/2011 at Embrapa Trigo, Passo Fundo (RS), Brazil. Four soil management systems (SMS) were compared, namely: 1) no tillage, 2) minimum tillage, 3) conventional tillage using a disk plow and a disk harrow, and 4) conventional using a moldboard and a disk harrow -and three CRS: system I (wheat/soybean), system II (wheat/soybean and common vetch/corn or sorghum) and system III (wheat/soybean, white oats/soybean and common vetch/corn or sorghum). This is a split-plot, randomized, complete block design with three replications. SMS were assigned in the main plot and CRS systems in the split-plots. This work addressed only data on crop rotation systems. There were no significant differences between the CRS for number of grains per plant, 1,000 grain weight and first pod height in soybean. The crop rotation for a summer, with corn or sorghum, propitiates a higher soybean yield compared with the other systems and monoculture soybean. The combination of conservation systems (no tillage and minimum tillage) and CR resulted in a higher soybean yield. The lowest grain yield and grain weight per plant were obtained in monoculture soybean.

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“…esse padrão de comportamento da rp também foi observado num latossolo Vermelho argiloso sob vários sistemas de rotação de culturas, onde o maior estado de compactação foi obtido em torno de 10 cm e o menor, até 7 cm de profundidade (Genro-Junior et al, 2004). o menor estado de compactação na camada superficial também foi atribuído à mobilização do solo nas operações de semeadura e adubação em linha (Genro-Junior et al, 2009 (Meek et al, 1989) …”

Section: Resistência Mecânica Do Solo à Penetração (Rp)unclassified

“…entretanto, seis anos mais tarde, melhorias na estrutura foram observadas no sistema em sucessão (andrade et al, 2010), e isso pode ser explicado pelo fato de o milho -que possui sistema radicular mais abundante e, por isso, mais eficaz em melhorar a estruturaser cultivado todos os anos, enquanto no sistema em rotação o milho foi cultivado a cada três anos, intercalado por feijão e soja, que possuem raízes menos abundantes. Genro-Junior et al (2004, 2009, em latossolo Vermelho argiloso, também não verificaram redução na resistência mecânica do solo à penetração com sistemas de rotação baseados em plantas de cobertura de verão (guandu e crotalária).…”

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