Remaining straw and release of nutrients from oat managed in integrated crop-livestock

Mattei, Eloisa; Oliveira, Paulo Sérgio Rabello de; Rampim, Leandro; Egewarth, Jonas Francisco; Rego, Carlos Augusto Rocha de Moraes; Piano, Jeferson Tiago; Herrera, Juan López de

doi:10.14393/bj-v34n6a2018-42036

Cited by 8 publications

(7 citation statements)

References 9 publications

(12 reference statements)

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“…Thus, the presence of crops residues on the soil surface preserves it against the impact of the rain drop, reducing the risk of erosion and maintaining moisture. It also increases the supply of organic matter, favors the development of biota and the cycling of nutrients and, consequently, improves the physical and chemical quality of the soil (Mattei et al, 2018). Ziech et al, (2015), found during the evaluated period (122 days) that black oats were of the species that presented the highest maintenance, with about 41% -(1.242 kg ha -1 ) of remaining MS in soil cover.…”

Section: Resultsmentioning

confidence: 96%

Phytomass decomposition of cover crops subjected to mechanical management and soybean yield

Ribeiro

Seidel

Cunha

et al. 2022

RSD

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The research had as objective to evaluate the crops residues decomposition of cover crops mechanically managed and its effect on the soybean yield cultivated in succession. The design used was randomized blocks in a factorial arrangement (5 x 2), subdivided over time, with four replications, consisting of five soil covers (black oats, turnip, turnip + oats, common vetch and fallow) and two forms of species management (knife-roller and shredder). The six collection times (0, 20, 40, 60, 80 and 110 days after management- DAM) were the subplots. The straw decomposition time was evaluated using the litter bags method. At 110 DAM, the covers that showed the greatest decomposition were vetch and fallow (91 and 90%) as well as the shortest half-life-T½ (31 and 33), evidencing their low soil protection. The cover that remained the most was black oats (35%) being a good option to keep the soil covered. In the first 60 DAM, the shredder accelerated the dry matter decomposition by 40% and presented a lower T½ (45). The cover crops cultivation and its management before soybean cultivation did not influence grain yield.

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Section: Resultsmentioning

confidence: 96%

Phytomass decomposition of cover crops subjected to mechanical management and soybean yield

Ribeiro

Seidel

Cunha

et al. 2022

RSD

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“…The differences observed after oat cultivation for total nitrogen may be associated with the reduction of losses (greater absorption by the crop), the decomposition and release of the remaining residues (Mattei et al, 2018), and the chemical nitrogen fertilization carried out after the management. The increase in the availability of nitrogen for plants through these mechanisms favors absorption and meets, in part, the growing demand of the shoot (Silveira et al, 2012) after grazing by the animals.…”

Section: Resultsmentioning

confidence: 99%

Carbon, Nitrogen, and Organic Matter of Soil in an Integrated Crop-Livestock System

Mattei

Oliveira

Rampim

et al. 2020

Rev. Agric. Neotrop.

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This study aimed to evaluate the effect of the integrated crop-livestock system on the contents and stocks of total organic carbon, total nitrogen, and soil organic matter. The experiment was carried out between April 2016 and February 2017, in a randomized block design in a strip-block scheme, with additional control treatment (fallow) and four repetitions. The treatments consisted of two densities of oat sowing (40 and 60 kg ha-1) in strips A and different grazing frequencies (without grazing - WG, one grazing - 1G, and two grazing - 2G) in strips B, besides fallow as a control treatment. The determinations of the contents of total organic carbon (TOC), total nitrogen (TN), and organic matter (SOM) were carried out in the soil layers of 0-5, 5-10, and 10-20 cm. Samplings were carried out after oat management, in the winter, and after soybean harvest, in the summer. The sowing density of black oats and the grazing frequencies were not able to promote changes in the total organic carbon and in the TOC stock, regardless of the time of evaluation. The use of 40 kg ha-1 of oat seeds would be recommended, as it does not promote changes in the increase in MOS, thus generating savings in the acquisition of seeds. The use of the lowest density of oat without grazing and one grazing promoted changes on the total nitrogen in the 5-10 cm layer after the removal of oats, when compared to the fallow, and it presented content similar to the management with two grazings.

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“…There were no differences in POC and POCst between most managed and reference areas at all layers, with the exception of 0.05-0.10 m layer in O40G1, where POC and POCst were significantly higher than values at the reference areas (Table 3). These results indicate increased carbon fraction and stock due to the addition of high volume of crop residues with a low C/N ratio (Mattei et al, 2018;Piano et al, 2017;Piano et al, 2019), climatic factors (Gonçalves et al, 2011), and preservation of soil structure (Santos et al, 2018). .55 b Note: Values with the same lowercase letters in the columns are not significantly different from the reference values using Dunnett test at a 5% probability level.…”

Section: Total Organic Carbon Physical Granulometric Fractions and mentioning

confidence: 88%

“…These results may be related to the deposition and accumulation of residues, of both animal and plant origin, combined with climatic factors, all of which can lead to decomposition through the activity of soil microbes. The resultant formation of free ions in soil alters the contents of various nutrients (Flores et al, 2008;Costa et al, 2015;Mattei et al, 2018;Piano et al, 2020).…”

Section: Soil Chemical Properties Under Different Management Systemsmentioning

confidence: 99%

Chemical Properties and Physical Fractions of Organic Matter in Oxisols Under Integrated Agricultural Production Systems

Rego¹,

Oliveira²,

Piano³

et al. 2020

Rev. Agric. Neotrop.

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The main cause of decreased soil fertility and soil organic matter content is intensive crop farming with inadequate management. This study aimed to evaluate soil chemical properties, total organic carbon content, physical granulometric fractions (particulate organic carbon and mineral-associated organic carbon), carbon stocks, and carbon management indices of oxisols in different integrated agricultural production systems (IAPSs) with reference to values in a haymaking area and native forest. The experiments were performed using completely randomized design, considering nine differently managed areas, including seven IAPSs and two reference areas (haymaking area and native forest); four soil samples from the 0.00-0.05, 0.05-0.10, and 0.10-0.20 m layers were randomly collected from each area and the abovementioned variables were evaluated. The results showed no differences in variables between the managed and reference areas, indicating the maintenance of fertility and carbon fractions. Therefore, the tested management strategies promote beneficial modifications of soil properties. Producers should adopt different IAPS management strategies for soil preservation.

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Remaining straw and release of nutrients from oat managed in integrated crop-livestock

Cited by 8 publications

References 9 publications

Phytomass decomposition of cover crops subjected to mechanical management and soybean yield

Phytomass decomposition of cover crops subjected to mechanical management and soybean yield

Carbon, Nitrogen, and Organic Matter of Soil in an Integrated Crop-Livestock System

Chemical Properties and Physical Fractions of Organic Matter in Oxisols Under Integrated Agricultural Production Systems

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