Urochloa decumbens Has Higher Mycorrhizal Colonization in Degraded than in Pristine Areas in the Brazilian Cerrado

Leite, Matheus Roberto; Cassiolato, Ana Maria Rodrigues; Lannes, Lucíola Santos

doi:10.1590/2179-8087.006019

Cited by 5 publications

(5 citation statements)

References 26 publications

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“…Nonetheless, because U. decumbens is highly colonized by AM, it has been used in initial stages of land restoration programs in disturbed areas, where other species do not grow well under harsh soil conditions (Leite et al, 2019). Also, Urochloa is highly responsive to the increased availability of nutrients after fires (Pereira-Silva et al, 2019).…”

Section: Urochloa As An Invasive Speciesmentioning

confidence: 99%

“…It has been found that in nutrient-poor pastures, Urochloa depends more on mycorrhizal fungi than C3 plants, especially in the initial seedling stages and during regrowth after periods of drought (Hetrick et al, 1990;Veenendaal et al, 1992). The use of U. decumbens in pastures in the Brazilian Cerrado has revealed high colonization by AMF, at a greater degree than native plants (Leite et al, 2019), which would partially explain the capacity of this species to develop in low fertility soils.…”

Section: P Cyclingmentioning

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 As An Invasive Speciesmentioning

confidence: 99%

Section: P Cyclingmentioning

confidence: 99%

Urochloa in Tropical Agroecosystems

Baptistella¹,

Andrade

Favarin³

et al. 2020

Front. Sustain. Food Syst.

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“…Urochloa eminii legacies and invaded inocula caused high levels of root mycorrhizal colonization for both species, in line with evidence that U. eminii is a very efficient AMF propagator, through effectively changing the soil microbiota; it is even used in laboratories for mycorrhizal spore propagation (Banuelos et al 2014). Recent evidence also suggests U. eminii has the ability to accumulate spores in Cerrado areas invaded with exotic grasses (Leite et al 2019). Therefore, any living soil in which U. eminii has grown should generate large amounts of mycorrhizal spores, ultimately affecting future colonizers of any soil patch.…”

Section: Discussionmentioning

confidence: 99%

Inoculum origin and soil legacy can shape plant–soil feedback outcomes for tropical grassland restoration

Wolfsdorf

Abrahão

D’Angioli

et al. 2021

Restoration Ecology

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Restoration techniques tailored to grasslands are needed to improve the effectiveness of restoration in tropical landscapes. In this study, we investigated the joint effects of plant–soil legacies and soil inocula in native and invaded Cerrado grasslands to evaluate whether different microbial origins affect plant–soil feedbacks and the likelihood of restoration. Using two grass species, we measured aboveground biomass, and several plant traits over two growth cycles. Species responded differently to inocula and legacies. The legacy of the invasive Urochloa eminii and invaded soil inocula positively affected mycorrhizal colonization. The legacy of Diectomis fastigiata, a commonly used species in Cerrado restoration, resulted in a negative self‐feedback potentially limiting its effectiveness for restoration. The success of the invasive species was in part due to its broad ecological niche and its ability to cope with a broad range of soil conditions. Our research suggests soil inocula and legacies could be used to aid restoration efforts in the tropics, allowing restoration practitioners to stimulate the growth of species targeting functional traits for a given ecosystem.

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“…The interaction of the Urochloa root system with the soil microbiota can also help form and stabilize soil aggregates and increase porosity. Urochloa is highly colonized by mycorrhizas, which, in part, explains their ability to grow in low-fertility soils (Smith and Read, 2010;Leite et al, 2019;Baptistella et al, 2020). This characteristic is exciting since coffee is also quite colonized and depends on mycorrhizas to acquire nutrients, mainly P, and contributes to the positive water status of coffee plants (Andrade et al, 2009(Andrade et al, , 2010.…”

Section: Urochloa Intercropping With Coffeementioning

confidence: 99%

Agronomic practices toward coffee sustainability. A review

Martinez,

Andrade,

Santos

et al. 2024

Sci. agric. (Piracicaba, Braz.)

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The coffee sector is estimated to have a retail market value in excess of USD 83 billion, and over 125 million jobs have been created in the global coffee chain. The coffee specialty market has recently increased significantly, generating opportunities to certify coffee beans produced by sustainable practices. This avoids practices potentially harmful to the environment. Agroforestry, organic farming, intercropping, and soil conservation strategies are examples of sustainable alternatives in the production of coffee. In this review, we focus on practices for the sustainable management of coffee plantations that can help farmers fight problems caused by global warming. More specifically, we address soil organic matter and microbiota, the use of Urochloa grass as intercrop in coffee plantations, shading systems (including agroforestry), and organic coffee production. We concluded that from the agronomic viewpoint, we already have production techniques that can replace traditional ones with significant advantages accruing to the quality of coffee orchard ecosystems. Nevertheless, we need scientific research efforts to deal with the existing gaps and the engagement of the whole coffee chain as a means of guaranteeing an adequate profit to those smallholders who adopt and maintain sustainable practice and are capable of bringing several positive changes to the coffee crop, including the use of microbia-based commercial products and new organic sources of nutrients to complement chemical fertilizers and improve coffee quality.

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Urochloa decumbens Has Higher Mycorrhizal Colonization in Degraded than in Pristine Areas in the Brazilian Cerrado

Cited by 5 publications

References 26 publications

Urochloa in Tropical Agroecosystems

Urochloa in Tropical Agroecosystems

Inoculum origin and soil legacy can shape plant–soil feedback outcomes for tropical grassland restoration

Agronomic practices toward coffee sustainability. A review

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