Simulating Long-Term Effects of Trash Management on Sugarcane Yield for Brazilian Cropping Systems

Marin, Fábio Ricardo; Thorburn, Peter J.; Costa, Leandro G.; Otto, Rafael

doi:10.1007/s12355-013-0265-2

Cited by 29 publications

(23 citation statements)

References 22 publications

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“…Para a região Nordeste, os solos de maior predominância são os de baixa e média capacidade de retenção de água, enquanto para a região Centro-Sul, a predominância é de solos de média a alta capacidade retenção de água. Entretanto, algumas práticas de manejo, como a manutenção da palhada na área, podem contribuir para minimizar o deficit hídrico, já que isso reduz as taxas de evaporação do solo (Olivier & Singels, 2012;Costa et al, 2014;Marin et al, 2014). Além disso, o uso intensivo de máquinas nos canaviais promove a compactação do solo e, assim, afeta negativamente suas características físico-hídricas (Rodríguez et al, 2012).…”

Section: Resultsunclassified

Simulação do risco de deficit hídrico em regiões de expansão do cultivo de cana-de-açúcar no Brasil

Vianna

Sentelhas

2014

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi determinar o risco de deficit hídrico para a cultura da cana-de-açúcar em diferentes regiões brasileiras, com foco nas áreas de expansão. Para tanto, utilizou-se o modelo CSM-Canegro, para simular a produtividade da cana-planta de 12 meses, em 30 localidades. A partir dos valores estimados de produtividades potencial e atingível (produtividade sem irrigação), definiram-se as classes de risco de deficit hídrico de acordo com os níveis de eficiência climática, dada pela razão entre essas produtividades. O modelo simulou o efeito dos diferentes tipos de solo e datas de plantio sobre a produtividade, o que possibilitou caracterizar o risco de deficit hídrico associado à cultura. A região de maior risco é Petrolina, PE, enquanto as regiões de menor risco são as similares a Recife, PE, e Araguaína, TO.Termos para indexação: Saccharum, DSSAT, eficiência climática, produtividade potencial, risco climático, zoneamento climático. Simulation of the water deficit risk in sugarcane-crop expansion regions in BrazilAbstract -The objective of this work was to determine the water deficit risk for sugarcane crop in different Brazilian regions, focusing on crop-expansion regions. For that, the CSM-Canegro model was used to simulate the 12-month plant cane crop yield in 30 locations. From the estimated values for potential and attainable (without irrigation) yields, the water deficit risk classes were defined according to the climatic efficiency given by the ratio between these yields. The crop model simulated the effect of different soil types and planting dates on the yield, which made possible to characterize the water deficit risk associated to the crop. The region with the highest risk is Petrolina, state of Pernanbuco, whereas the regions with the lowest risk are those similar to Recife, state of Pernanbuco, and Araguaína, state of Tocantins.Index terms: Saccharum, DSSAT, climatic efficiency, potential yield, climatic risk, climate zoning. IntroduçãoA cana-de-açúcar (Saccharum spp.) é uma das culturas de maior importância social, econômica e ambiental, tendo atingido uma produção de 600 milhões de toneladas em 8,5 milhões de hectares no Brasil, país que é o maior produtor mundial da cultura (Veiga Filho et al., 2008). Em constante expansão, em razão da frota crescente de veículos flexfuel e do preço atrativo do açúcar, a cultura é a principal matéria prima para produção de etanol e açúcar. As maiores áreas produtoras estão nas regiões Centro-Sul e Nordeste, e o Estado de São Paulo é o maior produtor, com mais de 50% da produção do país (Companhia Nacional de Abastecimento, 2013). As áreas de expansão concentram-se na maior parte no Triângulo Mineiro e no oeste de Minas Gerais, em Goiás e no Mato Grosso do Sul (Instituto Nacional de Pesquisas Espaciais, 2013), e em algumas regiões localizadas no interior nordestino.Os principais fatores ambientais que influenciam a produtividade de cana-de-açúcar são a temperatura do ar e a disponibilidade hídrica. A temperatura afeta vários processos meta...

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Section: Resultsunclassified

Simulação do risco de deficit hídrico em regiões de expansão do cultivo de cana-de-açúcar no Brasil

Vianna

Sentelhas

2014

Pesq. agropec. bras.

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“…In that region, sugarcane cultivation extends for 9.1 million ha [9], including a wide range of climatic conditions [32]. Several studies have indicated a direct relationship between crop yield and/or yield response to straw management with regional variations on climatic conditions in south-central Brazil [4,5,12,[33][34][35]. In our study, the sugarcane yield varied on a regional scale, indicating average yields of 129, 64, 82, and 99 Mg ha −1 of fresh stalk in southern Goiás and western, central-eastern, and northern São Paulo, respectively ( Table 3).…”

Section: Regional Effects Of Straw Removal On Sugarcane Yieldmentioning

confidence: 99%

Multilocation Straw Removal Effects on Sugarcane Yield in South-Central Brazil

et al. 2019

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Sugarcane straw is a crop residue that has a dual purpose and can be maintained on the fields or used to produce bioenergy. The straw retention in the field provides multiple ecosystem services, and the complex interactions between straw and yield responses are hard to predict by local studies. The aim of this study was to investigate the straw removal effects on sugarcane yield in southcentral Brazil. To achieve the objective, a set of 21 field studies was conducted in contrasting edaphoclimatic conditions. In addition, data of seven studies from the literature were included to build a more robust dataset. Since straw removal treatments were not homogeneous in all experiments, they were grouped as follows: NR, no removal (baseline treatment); LR, low removal; MR, moderate removal; and TR, total removal. To facilitate the data analysis, the experiments were gathered in four macroregions: southern Goiás, western São Paulo, central-eastern São Paulo, and northeastern São Paulo. The site location was the most effective individual factor to explain the straw removal effects on sugarcane yields. Compared with NR treatment, the average yield losses induced by LR, MR, and TR were 2, 10, and 13 Mg ha −1 in southern Goiás and 2, 4, and 6 Mg ha −1 in western São Paulo states, respectively. In other regions, no clear pattern was observed, and only site-specific effects were observed. Straw removal affected sugarcane yields in all soil types, but higher responses were observed under best conditions for sugarcane growth (i.e., clayey soils in southern Goiás). Our findings indicated harvesting season has a relevant role on determining yield responses to straw removal and younger ratoons are more responsive to straw removal. Conclusions from this study suggest straw removal recommendations cannot be designed based on isolated factors but require holistic and integrated knowledge to ensure that the straw amount left on field is enough to sustain multiple soil ecosystem services and crop yields.

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“…Using the APSIM model, Marin et al . () observed that sugarcane crops in Brazil have the potential to respond negatively to straw removal, and such yield losses will be accentuated in regions with higher water deficits. Corroborating those findings, Oliveira et al .…”

Section: Impacts Of Straw Removal For Sugarcane Growth and Biomass Prmentioning

confidence: 99%

Agronomic and environmental implications of sugarcane straw removal: a major review

et al. 2016

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Large‐scale bioenergy demand has triggered new approaches to straw management in Brazilian sugarcane fields. With the progressive shift from a burned to a nonburned harvest system, most of the straw presently retained on the soil surface has become economically viable feedstock for bioenergy production. The trade‐offs between the need to preserve soil quality and produce more bioenergy have been the subject of intense discussion. This study presents a synthesis of available information on the magnitude of the main impacts of straw removal from sugarcane fields for bioenergy production and therefore represents an easily available resource to guide management decisions on the recommended amount of straw to be maintained on the field to take advantage of the agronomic, environmental, and industrial benefits. Crop residues remaining on sugarcane fields provide numerous ecosystem services including nutrient recycling, soil biodiversity, water storage, carbon accumulation, control of soil erosion, and weed infestation. Furthermore, several studies reported higher sugarcane production under straw retention on the field, while few suggest that straw may jeopardize biomass production in cold regions and under some specific soil conditions. Pest control is among the parameters favored by straw removal, while N2O emissions are increased only if straw is associated with the application of N fertilizer and vinasse. An appropriate recommendation, which is clearly site specific, should be based on a minimum mass of straw on the field to provide those benefits. Overall, this review indicates that most of the agronomic and environmental benefits are achieved when at least 7 Mg ha−1 of dry straw is maintained on the soil surface. However, modeling efforts are of paramount importance to assess the magnitude and rates of straw removal considering the several indicators involved in this complex equation, so that an accurate straw recovery rate could be provided to producers and industry toward greater sustainability.

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Simulating Long-Term Effects of Trash Management on Sugarcane Yield for Brazilian Cropping Systems

Cited by 29 publications

References 22 publications

Simulação do risco de deficit hídrico em regiões de expansão do cultivo de cana-de-açúcar no Brasil

Simulação do risco de deficit hídrico em regiões de expansão do cultivo de cana-de-açúcar no Brasil

Multilocation Straw Removal Effects on Sugarcane Yield in South-Central Brazil

Agronomic and environmental implications of sugarcane straw removal: a major review

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