Regional, seasonal, cultivar and crop-year effects on sugarcane responses to residue mulching

Ramburan, S.; Nxumalo, Nkosinathi

doi:10.1016/j.fcr.2017.06.001

Cited by 10 publications

(11 citation statements)

References 10 publications

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“…The 30-year simulations results were in agreement with experimental data reported across Brazil and South Africa (Lisboa et al, 2018;Olivier and Singels, 2012;Ramburan and Nxumalo, 2017;Ruiz Corrêa et al, 2019), where SAMUCA showed a consistent increasing trend of fresh cane due to the presence of GCTB as a mediated effect of increased soil moisture during crop initial development stages (sprouting and tillering). In addition, the outstanding beneficial effects of mulch in fresh cane obtained in Jataí and Piracicaba simulations coincided with one of the driest years of both climate series (Figure A25), reinforcing the positive effect of GCTB on fresh cane under dry spell events.…”

Section: Discussionsupporting

confidence: 88%

Modelling the trash blanket effect on sugarcane growth and water use

Vianna

Nassif

Carvalho³

et al. 2020

Computers and Electronics in Agriculture

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The traditional practice of burning at the pre-harvesting of sugarcane has being phasedout in Brazil, resulting in the maintenance of a crop`s residue layer on soil surface, namely the Green Cane Trash Blanket (GCTB). New technologies for electricity and second-generation ethanol (2G) production from crop residues have raise the question on what would be the optimum amount of crop residue left on the field to keep the agronomic and environmental benefits of GCTB. To support informed decision making on sugarcane trash management, we updated, evaluated and applied a new version of the SAMUCA model to simulate the sugarcane growth and water use under the GCTB effect. The updated model was calibrated and parameterized for bare soil and GCTB conditions and evaluated across different Brazilian regions. Thirty-year simulations were then conducted with the updated model to quantify the effects of GCTB on sugarcane growth and water use where sugarcane is traditionally grown in Brazil. The updated version of SAMUCA model showed equal or superior performance when compared with widely-used process-based models for sugarcane. Based on our 30-year simulations, the GCTB exhibited a high probability to promote a beneficial effect on sugarcane yields in dry climates (> 90%), with the potential for increasing, on average, 14 ton ha -1 of fresh cane yield in Petrolina, Brazil. Although the beneficial effect on yields were not significant in humid regions, the maintenance of 12 ton ha -1 of GCTB was associated with a high probability (> 87%) in reducing the water use of sugarcane cropping system by mm, on average, potentially reducing irrigation demand in the early stages of crop development while protecting crop production under dry spell events. The new version of SAMUCA model offers as a tool for decision making on mulch management in sugarcane plantations.

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Section: Discussionsupporting

confidence: 88%

Modelling the trash blanket effect on sugarcane growth and water use

Vianna

Nassif

Carvalho³

et al. 2020

Computers and Electronics in Agriculture

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“…The lower initial growth of the sugarcane promoted by keeping straw is due to the physical barrier imposed, but it may also be associated with lower soil temperature, which reduces plant growth (Awe et al 2015;Ramburan and Nxumalo 2017;Sandhu et al 2013;Vianna et al 2020). In agreement with results found in this paper, Ramburan and Nxumalo (2017) found reductions in the number and height of stalks due to keeping straw, regardless the region in South Africa, the cultivar, and the season of the beginning of the cycle (summer or winter). Higher VI occurred between the 3 rd and 14 th positions (Fig.…”

Section: Discussionsupporting

confidence: 88%

“…The last observed reductions were of 4 and 15% in the cycle of plant cane and ratoon, respectively. The presence of straw on the soil increased the juice purity, and the remaining other industrial indexes were not negatively affected by the straw (Table 1), as found by Ramburan and Nxumalo (2017), Nxumalo et al (2017), and Aquino et al (2018).…”

Section: Discussionsupporting

confidence: 52%

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Straw management effects on sugarcane growth, nutrient cycling and water use in the Brazilian semiarid region

et al. 2020

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It was evaluated how straw management modifies the development, growth, nutrient cycling and crop water productivity of sugarcane in the semiarid region of Brazil. The experiment was carried out using two plots with 5 ha each, being one without straw on the soil surface and one with 26 Mg•ha −1 covering the soil. Sugarcane growth and development and straw decomposition coefficient were evaluated, whereas the industrial yield, juice quality, dry matter partitioning, and crop water productivity were determined at harvesting. The straw decomposition coefficient was 0.0049 Mg•ha −1 •day −1 , and the remaining dry mass was equal to 24%. The straw affected the sugarcane growth and development until the first 100 days. The individual internode volume can be adopted as an indicator of the effect of straw on sugarcane growth because the internode volumes up to the sixth position in the with-straw treatment crop were lower than in the no-straw treatment, which was not observed in other variables of the stalks. Keeping straw on the soil surface reduced the crop lodging. Yield and juice quality were not affected, but crop water productivity was increased by keeping sugarcane straw in the field.

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“…Furthermore, straw mulching can create an ideal microclimate (mainly temperature and humidity) for the development of pest and disease infestations (Dinardo-Miranda and Fracasso 2013; Hassuani et al 2005), which could adversely affect crop yield and increase production costs. In some cases, especially in the cooler temperate regions, maintaining straw on the soil can hinder the ratoon sprouting, resulting in gaps in the stand and reducing the sugarcane yields (Campos et al 2010;Ramburan and Nxumalo 2017). On the other hand, straw retention in warmer climates has resulted in higher yields by conserving soil moisture and decreasing soil temperature (Aquino et al 2017).…”

Section: Green Mechanized Harvesting and Tillage Practicesmentioning

confidence: 99%

Sustainability of sugarcane production in Brazil. A review

Bordonal

Carvalho

Lal

et al. 2018

Agron. Sustain. Dev.

331

140

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Brazil is a major sugarcane producer and its production more than doubled over the last decades to meet global bioenergy demands for reducing crude oil dependency and mitigating climate change. Nevertheless, the adverse effects of this growth on jeopardizing the sustainability of sugarcane production are not known, especially when environmental impacts of agricultural inputs and production processes are not judiciously managed. This article is a comprehensive review of the state-of-the-knowledge and the main advances made thus far in the sugarcane sector. Here, we review the major environmental impacts of rapidly expanding sugarcane plantation on the land use change and its competition with food production, as well as those associated with sugarcane cultivation in Brazil. Our main finding are that sugarcane plantation did not contribute to direct deforestation, and its expansion on degraded pastures with the attendant increased yields of food crops and livestock intensification decreased land competition between food and sugarcane. Non-burning sugarcane harvesting is a win-win strategy because of its benefits involving agronomic and environmental aspects, but soil compaction is among the main issues in sugarcane cropping systems. Sugarcane is highly efficient in terms of nitrogen use efficiency, which is an important factor for its high energy balance. But, special attention should be given regarding emissions of nitrous oxide when straw mulching is combined with application of nitrogen fertilizer and vinasse. Recent advances in the sugarcane sector also show significant reductions in water consumption, making sugarcane ethanol one of the most favorable options in terms of water footprint. Growing realization of a vast potential indicates the need to further enhance the environmental benefits of sugarcane ethanol by optimizing the agricultural production chain. Based on this improved knowledge, the adoption of best management practices is among researchable priorities that can be developed to consolidate the large potential of sugarcane production towards greater sustainability.

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Regional, seasonal, cultivar and crop-year effects on sugarcane responses to residue mulching

Cited by 10 publications

References 10 publications

Modelling the trash blanket effect on sugarcane growth and water use

Modelling the trash blanket effect on sugarcane growth and water use

Straw management effects on sugarcane growth, nutrient cycling and water use in the Brazilian semiarid region

Sustainability of sugarcane production in Brazil. A review

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