Legume nitrogen credits for sugarcane production: implications for soil N availability and ratoon yield

Tenelli, Sarah; Otto, Rafael; Castro, Saulo Augusto Quassi de; Sánchez, Camilo Ernesto Bohórquez; Sattolo, Thales Meinl Schmiedt; Kamogawa, Marcos Yassuo; Pagliari, Paulo; Carvalho, João Luís Nunes

doi:10.1007/s10705-019-09979-y

Cited by 15 publications

(8 citation statements)

References 47 publications

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“…The maintenance of soil covered with straw under RT is likely to enhance nutrient and water availability for microbial and plant growth, which led to higher MBC content [47,49]. Some studies reported the increase of MBC as a function of sugarcane straw retention in the field [11,56] and under RT after cover crop [57]. It could be inferred that more labile C fraction derived of longstanding residues was biologically available to microbial respiration, which provided increasing MBC and β-glucosidase activity, thus increasing soil quality under these treatments [15,58].…”

Section: Effects Of Tillage and Straw Removal On Soc Stocksmentioning

confidence: 99%

Can reduced tillage sustain sugarcane yield and soil carbon if straw is removed?

et al. 2019

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Straw removal for bioelectricity, cellulosic ethanol, or other bio-products has become a common practice in Brazilian sugarcane areas, but long-term effects on soil organic carbon (SOC) and yield are unknown. Our objective was to quantify tillage intensity and removal levels on SOC stocks and sugarcane yield on contrasting edaphoclimatic conditions in Brazil. Conventional tillage-CT and reduced tillage-RT coupled with three straw removal levels (none-NR; moderate-MR; total-TR) were combined to create six treatment combinations: CTNR, CTMR, CTTR, RTNR, RTMR, and RTTR, respectively. Sugarcane yield was measured annually and soil samples to a depth of 40 cm were collected and analyzed before and after 5 years of treatments. Neither tillage practices nor straw removal significantly affected sugarcane yield on sandy loam soil, but CTMR, CTTR, and RTTR showed substantial yield reductions on clayey soil. SOC stocks for RTNR increased by as much as 1.64 Mg ha −1 year −1 on clayey soil, while CTMR and CTTR favored depletion of SOC stocks on both soils. Overall, each Mg of straw returned to the soil increased SOC stock by 95 kg ha −1 for clayey soil under both tillage practices and 55 kg ha −1 for sandy loam under the CT system. Furthermore, straw removal decreased microbial biomass C and b-glucosidase activity. These findings suggest that the adoption of RT attenuates the adverse impacts of straw removal on SOC stocks while ensuring sugarcane yields for a more sustainable bioenergy production in Brazil.

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Section: Effects Of Tillage and Straw Removal On Soc Stocksmentioning

confidence: 99%

Can reduced tillage sustain sugarcane yield and soil carbon if straw is removed?

et al. 2019

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“…Alternative management strategies on-site for more sustainable sugarcane production are required to compensate for the adverse erosion effects on soil, water, and biotic balance as vegetative barrier conservation practices [77]. Techniques to improve soil organic carbon and increase yield include reduce or no-tillage, crop rotation (minimum soil disturbance) [16], legume cover crop [78], organic fertilizer, filter cake, ashes, biochar, and others. Reduce tillage and no-tillage system concepts were implemented in this century.…”

Section: Discussionmentioning

confidence: 99%

Soil Erosion Satellite-Based Estimation in Cropland for Soil Conservation

et al. 2022

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Intensive cropland expansion for an increasing population has driven soil degradation worldwide. Modeling how agroecosystems respond to variations in soil attributes, relief and crop management dynamics can guide soil conservation. This research presents a new approach to evaluate soil loss by water erosion in cropland using the RUSLE model and Synthetic Soil Image (spectroscopy technique), which uses time series remotely sensed environmental, agricultural and anthropic variables, in the southeast region of São Paulo State, Brazil. The availability of the open-access satellite images of Tropical Rainfall Measuring Mission (TRMM) and Landsat satellite images provided ten years of rainfall data and 35 years of exposed soil surface. The bare soil surface and agricultural land use were extracted, and the multi-temporal rainfall erosivity was assessed. We predict soil maps’ attributes (texture and organic matter) through innovative soil spectroscopy techniques to assess the soil erodibility and soil loss tolerance. The erosivity, erodibility, and topography obtained by the Earth observations were adopted to estimate soil erosion in four scenarios of sugarcane (Saccharum spp.) residue coverage (0%, 50%, 75%, and 100%) in five years of the sugarcane cycle: the first year of sugarcane harvest and four subsequent harvesting years from 2013 to 2017. Soil loss tolerance means 4.3 Mg ha−1 exceeds the minimum rate in 40% of the region, resulting in a total soil loss of ~6 million Mg yr−1 under total coverage management (7 Mg ha−1). Our findings suggest that sugarcane straw production has not been sufficient to protect the soil loss against water erosion. Thus, straw removal is unfeasible unless alternative conservation practices are adopted, such as minimum soil tillage, contour lines, terracing and other techniques that favor increases in organic matter content and soil flocculating cations. This research also identifies a spatiotemporal erosion-prone area that requests an immediately sustainable land development guide to restore and rehabilitate the vulnerable ecosystem service. The high-resolution spatially distribution method provided can identify soil degradation-prone areas and the cropland expansion frequency. This information may guide farms and the policymakers for a better request of conservation practices according to site-specific management variation.

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“…The soils in these three sites are classified according to Soil Taxonomy as Arenic Kandiudult, Rhodic Eutrudox, and Rhodic Hapludox, and these three areas will, henceforth, be called sandy soil, clay soil 1 and clay soil 2, respectively. More information regarding chemical and physical characterization of these experimental areas can be found in Barbosa et al (2018) and Tenelli et al (2019). Before experiment establishment, previous sugarcane ratoon was desiccated with herbicides, and 2 Mg ha −1 of dolomitic lime and 1 Mg ha −1 of gypsum were applied in each site.…”

Section: Biomass Quality Measurementsmentioning

confidence: 99%

The effects of integrated food and bioenergy cropping systems on crop yields, soil health, and biomass quality: The EU and Brazilian experience

et al. 2022

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Integrated food and bioenergy production is a promising way to ensure regional/national food and energy security, efficient use of soil resources, and enhanced biodiversity, while contributing to the abatement of CO2 emissions. The objective of this study was to assess alternative crop rotation schemes as the basis for integrating and enhancing the sustainable biomass production within the food‐energy agricultural context. Sunn hemp (Crotalaria spp.) in rotation with wheat (Triticum spp.) in the EU and with sugarcane (Saccharum spp.) in Brazil were evaluated. Sunn hemp did not negatively affect crop's productivity and soil fertility; wheat grain yields were maintained around the mean regional production levels (6, 7, 3 and Mg ha−1 in Greece, Italy, and Spain, respectively), and the cumulative biomass in the extended rotation (wheat straw+sunn hemp) was between 1.5 and 2.0 times higher than in the conventional rotation. In Brazil, sugarcane stalks yield in clay soils increased by around 15 Mg ha−1 year−1 under sunn hemp rotation in comparison with bare fallow. Moreover, sunn hemp in the EU rotations did not have negative effects on soil available macronutrients, organic matter, pH, and cation exchange capacity, neither on C and N stocks in Brazil. The qualitative characteristics (mineral, ash, and hemicelluloses contents) of the cumulated biomass were somehow higher (in average +26%, +35%, and +3.4%, respectively) than in the conventional system. In summary, in temperate and tropical climates the integration of dedicated biomass legume crops within conventional systems could lead to enhanced biomass availability, crop diversification, and efficient use (in space and time) of the land resources.

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Legume nitrogen credits for sugarcane production: implications for soil N availability and ratoon yield

Cited by 15 publications

References 47 publications

Can reduced tillage sustain sugarcane yield and soil carbon if straw is removed?

Can reduced tillage sustain sugarcane yield and soil carbon if straw is removed?

Soil Erosion Satellite-Based Estimation in Cropland for Soil Conservation

The effects of integrated food and bioenergy cropping systems on crop yields, soil health, and biomass quality: The EU and Brazilian experience

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