Residues Decomposition in Crop Rotations under No-till System

Canalli, Lutécia Beatriz dos Santos; Santos, Josiane Bürkner dos; Silva, Andressa Andrade e; Muchinski, Angela; Feliciano, Emillyn; Penteado, Daiane

doi:10.1590/1678-4324-solo-2020190609

Cited by 6 publications

(3 citation statements)

References 19 publications

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“…When crop residues are retained on the soil surface or incorporated into the soil, they provide a significant input of organic matter, which can serve as a substrate for soil microorganisms [56,57]. Microbes decompose the crop residues, releasing nutrients and breaking down complex organic compounds into simpler forms that can be taken up by plants [43,58]. This process leads to the formation of stable humus, which is a form of organic matter that can persist in soil for long periods of time, thus contributing to the buildup of organic carbon in tropical soils [59,60].…”

Section: Crop Residue Retentionmentioning

confidence: 99%

Enhancing Organic Carbon Content in Tropical Soils: Strategies for Sustainable Agriculture and Climate Change Mitigation

Adekiya,

Alori,

Ogunbode

et al. 2023

TOASJ

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Background: Tropical soils are characterized by low soil organic carbon (SOC) contents, which can negatively impact soil fertility, water retention, overall agricultural productivity, and food security. Objective: This paper aimed to review and synthesize the current body of literature on the restoration of SOC in tropical soils. Methods: A total of about 152 related articles were downloaded from electronic journal databases using search keywords, such as organic carbon (OC), conservation tillage, intercropping, biochar, and tropical soil. We discussed conservation tillage practices, such as reducing soil disturbance and respiration from the soils, as a means to promote soil OC sequestration. We also highlighted the importance of crop residue retention, which not only increases organic matter inputs and soil nutrients but also promotes soil water retention and reduces soil erosion. Results: Cover crops and crop rotation are identified as effective practices to cover bare ground during planting seasons, reduce erosion, and prevent nutrient losses through leaching and runoff. Additionally, we review the role of fertilizer application, manure and compost application, intercropping, agroforestry, and biochar as strategies to enhance OC content in tropical soils. We highlight the benefits of incorporating organic amendments, such as manure and compost, to improve soil structure and water-holding capacity. Furthermore, we discuss the potential of biochar, a carbon-rich material produced from biomass pyrolysis, as a strategy to sequester OC in tropical soils. Conclusion: Overall, this review provides insights into various strategies that can be implemented to increase the OC content of tropical soils, which can have multiple benefits for soil health, agricultural productivity, and climate change mitigation. Further research and implementation of these practices can contribute to mitigating climate change, conserving soil resources, and promoting sustainable agriculture in tropical regions.

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Section: Crop Residue Retentionmentioning

confidence: 99%

Enhancing Organic Carbon Content in Tropical Soils: Strategies for Sustainable Agriculture and Climate Change Mitigation

Adekiya,

Alori,

Ogunbode

et al. 2023

TOASJ

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“…The use of cover crops increases the rate of biomass input and nutrient cycling while can improve weed suppression and nematode infestation (Canalli et al., 2020; Costa, Andreotti, et al., 2021; Wang et al., 2022). Tropical grasses are among the most popular cover crop used in Brazil, producing high amounts of aboveground and shoot biomass.…”

Section: Introductionmentioning

confidence: 99%

Cover crop diversity for sustainable agriculture: Insights from the Cerrado biome

Souza,

Santos,

Ferreira

et al. 2024

Soil Use and Management

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Brazil is one of the largest soybean producer of the world and the Cerrado biome has played a pivotal role in this expansion. Due to the economic and agronomic challenges associated with the maize production as a second summer crop in this region, cover crops are gaining popularity as a strategy to diversify the agricultural system while enhancing soil health. This study assessed the benefits of single species of cover crops and a mix of cover crop species in between harvest seasons to the soybean grain yield and nematode supression. The study was carried out for three years in two locations within the Cerrado biome. We evaluated six cover crop treatments after soybean cultivation: 1) Mix of cover crops (Pennisetum glaucum, Crotalaria spectabilis, and Urochloa ruziziensis), 2) P. glaucum (Pearl millet), 3) Crotalaria spectabilis, 4) Urochloa ruziziensis (Congo grass) 5) Urochloa brizantha cv. Marandu (Marandu palisadegrass), and 6) Urochloa brizantha BRS Paiaguás (Paiaguás palisadegrass). P. glaucum and U. brizantha cv. Marandu produced highest amounts of biomass on a 3‐year average. In one site, P. glaucum produced more biomass than other cover crops by 210%. Tropical grasses (U. ruziziensis, Marandu, and Paiaguás), along with the cover crop mixture, exhibited intermediate biomass levels in the site with higher P. glaucum biomass production and did not differ from P. glaucum in the other site. Cover crops varied nutrient uptake depending on the species. Decomposition rates varied among cover crops as expected, with C. spectabilis decomposing rapidly and releasing substantial amounts nutrients, particularly nitrogen. In contrast, the cover crop mixture had a slower decomposition. The choice of cover crop significantly influenced soybean population and yield, with some variability across years and locations. The cover crop mixture consistently supported higher soybean populations and yields, highlighting its potential for enhancing soybean production, nutrient cycling, and nematode suppression. It effectively reduced nematode abundance in soybean roots, highlighting its role in nematode management. Our findings emphasize the robustness and versatility of cover crop mixtures in mitigating weather variability across years and sites. They consistently performed well in terms of biomass production, nutrient uptake, soybean yields, and nematode control. This study highlights the vital role of cover crops in the Cerrado ecosystem, enhancing soil health, crop productivity, and environmental sustainability. The choice of cover crop species and mixtures offers a valuable tool for farmers seeking resilient and sustainable agricultural practices amid changing environmental conditions.

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“…The use of cover crops increasing the rate of biomass input, nutrient cycling, and reducing nematode infestation (Canalli et al 2020;Costa et al 2021; Wang et al 2022). Biomass acts as a reservoir of nutrients through the decomposition process, which are made available for next crops (Costa et al 2021).…”

mentioning

confidence: 99%

Cover crop influence on nutrient cycling, nematode population and soybean yield in the Brazilian Cerrado

Souza

Santos

Ferreira

et al. 2023

Preprint

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Soybean-maize succession is the main annual cropping system used in Brazilian cerrado. However, due to water restrictions, the cultivation of maize (off-season crop) is not viable after cultivation of late maturing soybean cultivars and/or when late soybean seeding occurs due adverse weather conditions. In this scenario, the use of cover crops can be a good option to benefit soil health and consequently the soybean yield in the next crop season. The objective is to evaluate the effects of cover crops on biomass inputs, nutrient cycling, and nematode control during the off-season in the Cerrado biome. The study was conducted for three years in two locations in the state of Goiás. We evaluated five options of cover crops after soybean cultivation: 1) Mix of cover crops (Pennisetum glaucum, Crotalaria spectabilis, and Urochloa ruziziensis), 2) P. glaucum, 3) C. spectabilis, 4) U. ruziziensis 5) U. brizantha cv. Marandu, and 6) U. brizantha BRS Paiaguás. The results revealed that Pennisetum glaucum (9633 and 6958 kg ha-1 in Montividiu and Rio Verde) and U. brizantha cv. Marandu (8015 kg ha-1 in Rio Verde) produced the highest amount of biomass on average over three years. The treatments soybean/Crotalaria spectabilis and soybean/Pennisetum glaucum reduce the population of the nematodes. However, the use of a more diversified system such as the mix of cover crops provided a greater soybean yield, soil coverage and a high concentration and release of nutrients during the soybean cycle. Being one important alternative for ensure agricultural sustainability in the Cerrado.

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Residues Decomposition in Crop Rotations under No-till System

Cited by 6 publications

References 19 publications

Enhancing Organic Carbon Content in Tropical Soils: Strategies for Sustainable Agriculture and Climate Change Mitigation

Enhancing Organic Carbon Content in Tropical Soils: Strategies for Sustainable Agriculture and Climate Change Mitigation

Cover crop diversity for sustainable agriculture: Insights from the Cerrado biome

Cover crop influence on nutrient cycling, nematode population and soybean yield in the Brazilian Cerrado

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