Cobertura do solo, produção de biomassa e acúmulo de nutrientes por plantas de cobertura

Wolschick, Neuro Hilton; Barbosa, Fabrício Tondello; Bertol, Ildegardis; Santos, Kristiana Fiorentin dos; Werner, Romeu de Souza; Bagio, Bárbara

doi:10.5965/223811711522016134

Cited by 31 publications

(34 citation statements)

References 4 publications

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“…Parana., Marechal Cândido Rondon, v. 19, n. 2, apr./jun., p. 151-160, 2020 higher than FT. In evaluations carried out in southern Brazil, Wolschick et al (2016) observed higher DMY of black oat compared to forage turnip, being 9.91 and 4.26 Mg ha -1 , respectively, while Barbosa et al (2012) obtained 3.6 Mg ha -1 of wheat. The importance of high plant biomass in winter crops is related to the adequate coverage of the soil by its cultural residues in no-tillage.…”

Section: Dry Mass Yield Of Aerial Part Of Winter Cropsmentioning

confidence: 91%

Scarification in no-tillage: soil physics and plant development

Prazeres

Barbosa²,

Bertol³

et al. 2020

Rev. Sci. Agr. Paranaensis

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No-tillage is conservationist soil management for agricultural production and it is based on soil cover by crop residues and restricted mobilization to the sowing line. However, its structure can be affected by the excessive compaction resulting from the traffic of machines. The objective of this study was to evaluate soil physical properties and crop performance in no-tillage with and without scarification, combined with different successions of plant species, in a Humic Cambisol. For this, the species of black oat, wheat and forage turnip were cultivated in winter, and later, corn and beans in summer. Soil samples were collected at the beginning and at the end of the experimental period, while evaluations of plant yield were carried out in the final stage of development. Soil scarification reduces relative density (RD) and soil resistance to penetration (RP) after preparation of soil, with effect restricted to the surface layer. Such effects persist for one year, however RD and RP increase over time, regardless of soil management. RP is more sensitive for evaluation of soil compaction and correlates positively with RD, with exponential adjustment. The aerial biomass of black oat, wheat and forage turnip was not affected by soil scarification, and crop yield of beans and corn showed to be more related to the previous cultivation than the scarification in no-tillage.

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Section: Dry Mass Yield Of Aerial Part Of Winter Cropsmentioning

confidence: 91%

Scarification in no-tillage: soil physics and plant development

Prazeres

Barbosa²,

Bertol³

et al. 2020

Rev. Sci. Agr. Paranaensis

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“…The estimated initial of dry mass of roots was found by ratio of dry mass of root and dry mass of residues production in the same location, according to research done by Wolschick et al (2016). The temporal dry mass of the root was estimated based on the relative temporal reduction of the root mass determined by Volk & Cogo (2008).…”

Section: Methodsmentioning

confidence: 99%

Path coefficient analysis, a different approach to identify soil quality indicators

Ramos

Bertol

Bandeira

et al. 2019

Rev. bras. eng. agríc. ambient.

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Soil quality indicators related to water erosion reduction can assist with correct soil management. The objective of this research was to identify some variables that could be used as soil quality indicators with the aid of path coefficient analysis in order to reduce water erosion. The research was carried out in the field between May 2011 and April 2013 in southern Brazil on an Inceptisol. The following treatments were studied under simulated rainfall conditions: 1) no-tilled, cultivated and covered by cultural residue of ryegrass (Lolium multiflorum) (HCR); 2) no-tilled, cultivated and covered by crop residue of vetch (Vicia sativa) (HCV); 3) cultivated and scarified soil containing ryegrass roots (HRR); 4) cultivated and scarified soil containing vetch roots (HRV); and 5) bare and chiselled soil (BHR). Eight simulated rainfalls were applied in each treatment. Flow velocity, soil and water losses as well as variables or soil attributes influenced by management were quantified. Path coefficient analysis verified that the coverage, surface roughness, water infiltration rate and total organic carbon have the greatest direct or indirect relationships with soil and water losses or runoff velocity. These variables were indicative of soil quality, particularly its resistance to water erosion. In a rough soil, the total organic carbon, root mass and macroporosity of the soil are more important as indicators for soil resistance to water erosion.

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“…In any case, in both situations, dry matter production came close to or even exceeded 6,000 kg ha -1 for cover crops. From a nutrient recycling point of view, cover cropping with green manure mix would be more interesting given that different species have the ability to absorb or fix a particular element (Casali et al, 2011;Calegari et al, 2013;Wolschick et al, 2016). Acknowledge studies demonstrate that green manures such as black oat, forage turnip and vetches accumulate significant amounts of nitrogen and potassium in their dry matter (Borkert et al, 2003;Crusciol et al., 2005).…”

Section: Dry Matter Yield Of Soil Covers After Corn Cultivationmentioning

confidence: 99%

Performance of cover and corn plants in different mechanical and biological management associations

Spliethoff

Rampim

Pott

2019

Agraria

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Countless cases of the no-tillage system in compacted layers are seen, making the adoption of management practices that improve the soil physical quality necessary. In this context, this study aimed to verify the influence of mechanical and biological management on the morphophysiological characters and yield of the corn crop and dry matter of cover crops cultivated in an Oxisol. The experiment was conducted at FAZESC, Farm School of the State University of the Central West-UNICENTRO, Guarapuava-PR, in an Oxisol with a very clayey texture. The used experimental design was of completely randomized blocks with split-split plots, with the following evaluated factors: with or without scarification in the plots, sowing with double disc or seed boot in the subplots and soil cover crops (black oat succeeded by the mixture composed by black oat, forage turnip, blue lupine, rye and common vetch; turnip succeeded by the consortium black oat + forage turnip; and fallow) in the sub-subplots. Dry matter production of soil covers, as well as morphophysiological attributes and corn crop yield were evaluated. Soil scarification did not affect corn yield, regardless of the used soil cover or furrowing system at sowing. Seeding done with seed boot limited the corn yield when associated to the soil cover with black oat and soil management with scarification. Soil cover has an effect on the stability and yield of the corn crop, with the fallow being the most productive instability. The mixture of toppings and the black oat + forage turnip had a high potential of dry matter production.

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Cobertura do solo, produção de biomassa e acúmulo de nutrientes por plantas de cobertura

Cited by 31 publications

References 4 publications

Scarification in no-tillage: soil physics and plant development

Scarification in no-tillage: soil physics and plant development

Path coefficient analysis, a different approach to identify soil quality indicators

Performance of cover and corn plants in different mechanical and biological management associations

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