Sazonalidade e potencial energético da biomassa residual agrícola na região dos Campos Gerais do Paraná

Pierri, Letícia de; Pauletti, Volnei; Silva, Dimas Agostinho da; Scheraiber, Clewerson Frederico; Souza, Jorge Luiz Moretti de; Munaro, Fernando Cesar

doi:10.1590/0034-737x201663020003

Cited by 10 publications

(3 citation statements)

References 22 publications

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“…These data were collected during the 9.5 years of the experiment (19 cropping seasons). We considered harvest indexes of 0.52 for soybean, 0.49 for maize and 0.53 for wheat, which were obtained in the same region (Pierri et al, 2016). The root biomass input was estimated by considering the aboveground inputs and the shoot-to-root ratios of 4.4 for black oats (Pietola & Alakukku, 2005), 5.2 for soybean, 5.6 for maize and 6.5 for wheat (Bolinder, Janzen, Gregorich, Angers, & VandenBygaart, 2007).…”

Section: Carbon Input Into the Soil By Plants And Dlmmentioning

confidence: 99%

Long‐term surface application of dairy liquid manure to soil under no‐till improves carbon and nitrogen stocks

Cavalcante

Favaretto

Dieckow

et al. 2019

European J Soil Science

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Manure application and no-till management improve soil quality, crop yields and C inputs, but little specific knowledge is available regarding the combined effect of long-term dairy liquid manure (DLM) application and no-till management on soil organic matter status and soil structure in topsoils. Here, we assess the impacts of surface-applied DLM for a 10-year period on soil total organic carbon (TOC) and nitrogen (TN) concentrations and stocks, on organic matter fractions and on soil physical-structural attributes in a no-till crop rotation system on clayey Ferralsol under no-till crop rotation management in a subtropical climate. Four rates of DLM (0, 60, 120 and 180 m 3 ha −1 year −1) were applied in a randomized block design with four replications. Soil samples were collected to calculate TOC and TN stocks to 100-cm depth and organic matter fractions in the 0-5-cm layer, and physical indicators of soil quality: bulk density, macroporosity and microporosity and aggregate stability. The largest DLM rates (120 and 180 m 3 ha −1 year −1) added 3.8-5.8 Mg C ha −1 year −1 as manure, increased crop residue input by 0.6 Mg C ha −1 year −1 , and increased TOC stock by 17% and TN stock by 27% in the top 10 cm of soil, at annual accumulation rates that averaged 0.72 Mg C ha −1 year −1 and 86 kg N ha −1 year −1. Stocks of TOC and TN in the sand-POM (particulate organic matter) fraction under the 180 m 3 ha −1 year −1 rate increased by 49 and 63%, and in the silt-MOM (mineral-associated organic matter) fraction by 30 and 47%, respectively. In the clay-MOM fraction, the change in TOC was not significant, but the TN increased by 16%. Soil physical-structural attributes (bulk density, porosity and aggregates) were improved by DLM application in the 10-cm layer and followed the soil carbon and nitrogen increments. Overall, the DLM amendment applied on the soil surface of no-till proved to be a strategy to ameliorate soil organic matter status, an important factor for agronomic and environmental benefits, besides improving crop biomass production. Highlights • Long-term application of liquid manure increased concentration and stock of SOC and TN in the 0-10-cm layer. • Increases of 0.72 Mg C ha −1 year −1 and 86 kg N ha −1 year −1 were observed in the 10-cm topsoil with manure.

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Section: Carbon Input Into the Soil By Plants And Dlmmentioning

confidence: 99%

Long‐term surface application of dairy liquid manure to soil under no‐till improves carbon and nitrogen stocks

Cavalcante

Favaretto

Dieckow

et al. 2019

European J Soil Science

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“…Crop yield estimation depends on several factors. Surveys have been managed in the Campos Gerais region to understand the influence of environmental variations on crop yields and water relations, as well as to suggest agricultural management alternatives to increase crop production (Araujo et al 2009, Araujo et al 2011, Souza et al 2013, Souza et al 2014, Pierri et al 2016.…”

Section: Introductionmentioning

confidence: 99%

Calibration and Validation of the AquaCrop Model to Estimate Maize Production in Campos Gerais, Paraná State, Brazil

Souza

Oliveira

Rosa

et al. 2020

Rev. bras. meteorol.

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Crop productivity evaluation with models simulations can help in the prediction of harvests and in the understanding of the interactions resulting from the soil-plant-atmosphere continuum. The aim of this study was to calibrate and validate the AquaCrop model for maize crop in the edaphoclimatic conditions of Campos Gerais region, Paraná State, Brazil. The analyses were carried out for maize crop with model input data (climate, crop, soil and soil management) obtained from the ABC Foundation Experimental Station in Castro, Ponta Grossa and Socavão. The climate in the region is humid subtropical, with rainfall evenly distributed. The relief varies from flat to gently undulating. The period analyzed in the calibration and validation process comprised 2011 to 2016 and 2012 to 2016 harvests, respectively. The data used in the calibration of AquaCrop was different from those used in the validation process. Observed and simulated yields were evaluated by simple linear regression analyses, absolute and relative errors, correlation coefficient (r), concordance (d) and performance (c) indexes. The calibration of AquaCrop was satisfactory in the locations studied for maize crop, obtaining absolute errors varying from 6 to 121 kg ha–1. The highest calibration errors occurred in Castro. However, the errors were not enough to reduce the performance in the validation process for this localitie. The model validation resulted in “excellent” performance in all locations evaluated. The AquaCrop can be used to predict the maize yield with acceptable accuracy in the Campos Gerais Region, Paraná State, Brazil.

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“…Compared to monocropping, the intercropping of plant species promotes the formation of a soil coverage that is closer to the ideal regarding the quantity and the quality of the residues, which will bring benefits to the following crops and the NTS (Calegari & Donizetti, 2014;Pierri et al, 2016). absorb nutrients in the deep layers of soil and accumulate them in the roots or in the aerial part; when these are deposited on the soil surface, they can release part of the nutrients contained in the tissue, altering the nutrient content in the most superficial layers along the cycle of the next crop.…”

Section: Introductionmentioning

confidence: 99%

Soybean Yields and Biomass Production of Winter Cover Crops in the Southwest of Parana – Brazil

Tessaro¹,

Pereira²,

Calegari³

et al. 2019

JSD

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The use of winter cover crops is an important practice for the management and conservation of soil and water in southern Brazil. The objective of this work was to evaluate the accumulation of green mass and dry mass in the aerial part of winter cover crops in monocropping and intercropping in southwestern Paraná, in the years 2016 and 2017. Randomized blocks were used as experimental design with a subdivided plot scheme of 50 m² with five replications. The cover crops used in monocropping were black oats and wheat, while for the intercropping black oats + turnips + rye + white lupin (AP+NF+C+TB), black oats + turnips (AP+NF) and black oats + turnips + rye + vetches + white lupin + buckwheat (AP+NF+C+E+TB+TM) were used. The data were subjected to analysis of variance and the means were compared by the Tukey test at 5 % probability. The intercrop composed of black oats + turnips + rye + vetches + white lupin + buckwheat had a higher production of green mass, with an average value of 50.880 kg ha-1. For the production of dry mass, the monocrop of black oats had higher yields, with an average value of 5.168 kg ha-1. The highest yields were obtained in the coverage area with black oats, turnips, rye, vetches, white lupin and buckwheat, presenting a yield in 2017 of 4.487 kg ha-1.

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Sazonalidade e potencial energético da biomassa residual agrícola na região dos Campos Gerais do Paraná

Cited by 10 publications

References 22 publications

Long‐term surface application of dairy liquid manure to soil under no‐till improves carbon and nitrogen stocks

Long‐term surface application of dairy liquid manure to soil under no‐till improves carbon and nitrogen stocks

Calibration and Validation of the AquaCrop Model to Estimate Maize Production in Campos Gerais, Paraná State, Brazil

Soybean Yields and Biomass Production of Winter Cover Crops in the Southwest of Parana – Brazil

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