Integrated farming systems influence soil organic matter dynamics in southeastern Brazil

Bieluczyk, Wanderlei; Píccolo, Marisa de Cássia; Pereira, Marcos Gervásio; Moraes, Moacir Tuzzin de; Soltangheisi, Amin; Bernardi, A. C. de C.; Pezzopane, José Ricardo Macedo; Oliveira, P. P. A.; Moreira, Marcelo Zacharias; Camargo, Plínio Barbosa de; Dias, Carlos Tadeu dos Santos; Batista, Itaynara; Cherubin, Maurício Roberto

doi:10.1016/j.geoderma.2020.114368

Cited by 53 publications

(33 citation statements)

References 87 publications

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“…The inclusion of U. ruziziensis to a soybean-corncotton ICLS promoted soil C sequestration and the system became a significant C sink, with rates reaching 0.36 Mg C ha −1 year −1 (Carvalho et al, 2014). Intensifying system productivity through ICLS showed to be the best alternative in increasing soil C storage in a six-year evaluation experiment (Bieluczyk et al, 2020), accumulating 0.28 Mg carbon ha −1 year −1 . These authors observed that corn-U.…”

Section: Urochloa Root System and Soil C Stockmentioning

confidence: 98%

“…CA relies on conservation premises, such as minimum tillage, crop rotation/intercrop and permanent soil cover with crop or cover crop derived residues (Hobbs et al, 2008). CA can be applied to annual and/or perennial crop systems and their adoption depends on climate regional differences, crop management, cash crop and spatial/temporal disposition of plant species in the cultivated areas (Gil et al, 2015;Bieluczyk et al, 2020). Because CA practices have similarities to other conventional systems, the transition from conventional agriculture systems is relatively simple and it can be applied and/or adapted to large areas (Gil et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Most studied and common CA systems adopted in the tropics include no-tillage (NT), with grain production, cover crops and crop rotation; integrated crop-forestry system (ICFS), with simultaneous production of grains and trees; integrated croplivestock system (ICLS), with the production of grains, forage and animals; integrated livestock-forestry system (ILFS), with the production of forage, animals and trees; and integrated croplivestock-forestry system (ICLFS), with the production of grains, forage, animals, and trees (Carvalho et al, 2014;Gil et al, 2015;Bieluczyk et al, 2020). These systems can be seen as levels of complexity and intensification, NT being the less intensified, ICLFS the most and ICFS/ICLS/IFLS intermediates, which means that the more species (plant and/or animal) are introduced, the more the agroecosystem resembles a natural ecosystem, and interactions among species become more complex and more total biomass is produced (Bieluczyk et al, 2020). In all CA systems described above, there is the opportunity to include forages to serve either as cover crops or pasture to animals.…”

Section: Introductionmentioning

confidence: 99%

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Urochloa in Tropical Agroecosystems

Baptistella¹,

Andrade

Favarin³

et al. 2020

Front. Sustain. Food Syst.

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Increasing biodiversity is an important issue in more secure and sustainable agriculture. Diversified systems are more resilient to climate change, environmental stresses and enhance soil health, nutrient cycling and nutrient use efficiency. In tropical agroecosystems, cover crops and intercrops are an alternative toward a more diverse and sustainable production. Urochloa spp. (syn. Brachiaria spp.) are perennial grasses, known for their high biomass production. They are commonly used as cover and companion crops in conservation agriculture in the tropics and the residues left in the field after cutting protect the soil and provide nutrient to the next crop cycle or intercropped culture. Urochloa species roots are vigorous, abundant and deep, as opposed to the more shallow and scarce roots of common crops. These traits contribute to carbon sequestration, soil organic matter stabilization and nutrient cycling. Urochloa roots also improve soil physical characteristics and influence soil nutrient dynamics, reducing nutrient losses and enhancing cycling, what is key to achieve greater nutrient use efficiency in agriculture. For instance, Urochloa root exudates can reduce nitrogen losses by denitrification and leaching through a process called biological nitrification inhibition; root exudates can mobilize recalcitrant phosphorus from soils and make it available for plant uptake; the deep roots of these grasses have the potential to recover nutrients that are virtually lost away from the root zone of other crops. This review compiles scientific progress regarding the introduction of Urochloa in agroecosystems, mainly on the aspects related to the contribution to more secure and sustainable agriculture.

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Section: Urochloa Root System and Soil C Stockmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Urochloa in Tropical Agroecosystems

Baptistella¹,

Andrade

Favarin³

et al. 2020

Front. Sustain. Food Syst.

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“…The use of grasses in intercropping with citrus plants is advantageous, considering that they are plants with perennial cover crops, with production of biomass and high ratios of C:N, with an average value of 46 in southeastern Brazil [44]. This can facilitate soil microbial growth and carbon sequestration by increasing the labile carbon in the soil, thus facilitating the increase in soil organic matter (SOM) [42].…”

Section: Biomass Yield and Depositionmentioning

confidence: 99%

Implication of Urochloa spp. Intercropping and Conservation Agriculture on Soil Microbiological Quality and Yield of Tahiti Acid Lime in Long Term Orchard Experiment

Arantes¹,

Cotta

Conceição

et al. 2020

Agriculture

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Techniques such as intercropping and minimum tillage improve soil quality, including soil microbial activity, which stimulates the efficient use of soil resources by plants. However, the effects of such practices in soil under citrus orchards have not been well characterized. In this study, we aimed to determine the effects of mowing and intercrop species on soil microbiological characteristics beneath a Tahiti acid lime orchard. The orchard was planted using minimum tillage and intercropped with two species of Urochloa species (U. ruziziensis—ruzi grass; U. decumbens—signal grass), with two types of mowers for Urochloa biomass (ecological; conventional) and herbicide applications. The study was conducted over 10 years. The ecological mower made the largest deposition of the intercrop biomass, thus providing the lowest disturbance of soil microbial activity and increasing, on average over all 10 years, the basal soil respiration (45%), microbial biomass carbon (25%), abundance of 16S rRNA (1.5%) and ITS (3.5%) genes, and arbuscular mycorrhizal fungi (30%), and providing a ca. 20% higher fruit yield. U. ruziziensis in combination with ecological mowing stimulated the abundance of the genes nifH (1.5%) and phoD (3.0%). The herbicide showed little influence. We conclude that the use of U. ruziziensis as an intercrop in citrus orchards subjected to ecological mowing can be recommended for improving and sustaining soil quality and citrus fruit production.

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“…Grazing pasture and croplands occupy a significant portion of land surface in the world. In the last decades, many countries, such as Australia [1,2], France [3], United States of America [4,5], and Brazil [6][7][8], have adopted the integration of crop and livestock systems as an alternative for sustainable production intensification. Integrated Crop-Livestock Systems (ICLS) seek the synergism between agricultural and livestock resources in combination with land use and management practices focused on the conservation of natural resources [9].…”

Section: Introductionmentioning

confidence: 99%

Monitoring Pasture Aboveground Biomass and Canopy Height in an Integrated Crop–Livestock System Using Textural Information from PlanetScope Imagery

et al. 2020

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Fast and accurate quantification of the available pasture biomass is essential to support grazing management decisions in intensively managed fields. The increasing temporal and spatial resolutions offered by the new generation of orbital platforms, such as Planet CubeSat satellites, have improved the capability of monitoring pasture biomass using remotely sensed data. Here, we assessed the feasibility of using spectral and textural information derived from PlanetScope imagery for estimating pasture aboveground biomass (AGB) and canopy height (CH) in intensively managed fields and the potential for enhanced accuracy by applying the extreme gradient boosting (XGBoost) algorithm. Our results demonstrated that the texture measures enhanced AGB and CH estimations compared to the performance obtained using only spectral bands or vegetation indices. The best results were found by employing the XGBoost models based only on texture measures. These models achieved moderately high accuracy to predict pasture AGB and CH, explaining 65% and 89% of AGB (root mean square error (RMSE) = 26.52%) and CH (RMSE = 20.94%) variability, respectively. This study demonstrated the potential of using texture measures to improve the prediction accuracy of AGB and CH models based on high spatiotemporal resolution PlanetScope data in intensively managed mixed pastures.

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Integrated farming systems influence soil organic matter dynamics in southeastern Brazil

Cited by 53 publications

References 87 publications

Urochloa in Tropical Agroecosystems

Urochloa in Tropical Agroecosystems

Implication of Urochloa spp. Intercropping and Conservation Agriculture on Soil Microbiological Quality and Yield of Tahiti Acid Lime in Long Term Orchard Experiment

Monitoring Pasture Aboveground Biomass and Canopy Height in an Integrated Crop–Livestock System Using Textural Information from PlanetScope Imagery

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