Soil compaction management and soybean yields with cover crops under no-till and occasional chiseling

Calonego, Juliano Carlos; Raphael, Juan Piero Antonio; Rigon, João Paulo Gonsiorkiewicz; Neto, Leontino de Oliveira; Rosolem, Ciro Antônio

doi:10.1016/j.eja.2017.02.001

Cited by 146 publications

(90 citation statements)

References 30 publications

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“…Silva et al () also observed a positive effect of brachiaria on SPQ and reported a wider LLWR in the surface layer within the interrow zone of coffee planted to brachiaria in the CER region. Calonego, Raphael, Rigon, Oliveira Neto, and Rosolem () also reported higher SPQ in the soil surface when cover crops were grown. Growing brachiaria enhances root growth of crops in the subsoil by improving physical properties of the entire soil profile.…”

Section: Discussionmentioning

confidence: 91%

Enhancing soil physical quality and cotton yields through diversification of agricultural practices in central Brazil

et al. 2019

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Brazil plays an important role in the global agricultural production, making Brazilian productive land use and management a critical issue. This study tested the hypothesis that soil physical quality (SPQ) of the Cerrado biome in central Brazil depends on appropriate crop rotation and tillage practices in cotton (Gossypium hyrsutum [L.])‐based cropping systems and is critical to achieve optimal cotton yields (COT). SPQ of an Oxisol was accessed for layers of 0.0–0.1, 0.1–0.2, and 0.2–0.4 m under conventional tillage (CT) and no‐tillage (NT) systems, in different farming systems, such as cotton monoculture, crop succession, and crop rotation in central Brazil. Variables studied were soil bulk density, total porosity, air permeability, pore continuity index, water content at field capacity, relative saturation at field capacity, the least limiting water range (LLWR), and COT. Soil sampling was performed in 2014, and COT was obtained in the 2013 and 2014 cropping seasons. Conservationist practices, such as crop diversity and absence of soil tillage, improved water availability, enlarged the LLWR, and indicated that brachiaria cultivation positively influences the SPQ, whereas continuous soil tillage and less crop diversity adversely affected SPQ. COT was positively influenced by SPQ aspects regarding the increased water access in the 0.2–0.4 m layer of NT and in the 0.0–0.1 m of CT management. Differences in SPQ, as indicated by the LLWR, were reflected in differences in COT, as well as in soil air permeability in the CT treatments for the 2014 cropping season. Other SPQ variables had no relation to COT.

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Section: Discussionmentioning

confidence: 91%

Enhancing soil physical quality and cotton yields through diversification of agricultural practices in central Brazil

et al. 2019

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“…Biopores produced by plant roots and soil fauna are particularly important in undisturbed soils (Angers and Caron, 1998) where their preservation creates a network of channels whereby subsequent crop roots easily propagate (Suzuki et al, 2013), hindering possible negative alterations in Bd. Thus, the deeper and dense root system of millet combined with the probable preserved biopores from beans compared with fewer roots of sunn hemp taproot system (Calonego et al, 2017) seem to offer an effective solution to reducing the soil physical constraints to plant growth in Ultisols under the NT system.…”

Section: Discussionmentioning

confidence: 99%

Soil physical properties and soil organic carbon content in northeast Brazil: long-term tillage systems effects

Oliveira

Ferreira

Souza

et al. 2020

Sci. agric. (Piracicaba, Braz.)

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Concerns about the negative effects of agriculture on soil physical quality and soil organic carbon (SOC) pools have spurred on the adoption of conservation tillage systems in tropical regions. This study aimed to evaluate the long-term impacts (16 th year) of conventional (CT), minimum (MT) and no-tillage (NT) practices and different cover crops (sunn hemp and a bean/ millet sequence) on soil physical properties and SOC content of a corn cultivated Ultisol in the northeast of Brazil. Soil bulk density (Bd), soil penetration resistance (SPR), soil aggregation, and total aggregate-associated carbon (C) (4-2 mm) were evaluated. Tillage practices exerted strong control on soil physical properties and total aggregate-C content but were influenced by cover crop species. Minimum tillage presented the lowest Bd, irrespective of cover crop, while NT with bean/millet sequence resulted in the lowest SPR. However, as regards soil aggregation and total aggregate-C, the results indicated that there were no differences between MT and NT, with both systems presenting greater mean weight diameter (MWD) and total aggregate-C content than CT. Total aggregate-C content in the 0.00-0.05 m soil layer in conservation tillage was increased by the adoption of a bean/millet sequence. Increased mechanical disturbance through CT practices was harmful to Bd, soil aggregation and SOC accrual. Overall, more conservative tillage practices and the proper choice of cover crops might yield greater soil quality. Low intensity of soil disturbances due to the adoption of MT favors soil aggregation and the accrual of SOC in weakly structured soils through increases in contact between organic and mineral particles while not causing significant destruction of soil aggregates.

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“…In comparison with the soil under Cerrado, cultivation increased BD to 30-cm depth, indicating that the impacts of management prac- (Calonego, Raphael, Rigon, de Oliveira Neto, & Rosolem, 2017;Taboada et al, 1998;Tavares Filho, Barbosa, & Ribon, 2010) as a consequence of the absence of tillage associated with soil surface disaggregation and subsequent settling and orientation of soil particles. In a Fluvisol under CT cultivated to maize, Barik et al (2014) observed that the effects of traffic on soil compaction were more intense on the surface layer (0-10 cm) but were also observed in deeper layers (10-20 and 20-30 cm).…”

Section: Discussionmentioning

confidence: 93%

Soil carbon and nitrogen stocks and physical properties under no‐till and conventional tillage cotton‐based systems in the Brazilian Cerrado

et al. 2018

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The aim of this study was to investigate soil C and N stocks and soil physical properties under a cotton (Gossypium hirsutum) based system using no‐till (NT) and conventional tillage (CT). The experiment was established as a randomized block design with four replications of six treatments as follows: [NT1], NT system with crop rotation of cotton/soybean (Glycine max)/maize (Zea mays) + brachiaria (Brachiaria ruziziensis); [NT2], NT system with crop rotation of soybean/maize + brachiaria/cotton; [NT3], NT system with crop rotation of maize + brachiaria/cotton/soybean; [CR1], CT with annual rotation (soybean/cotton); and [CR2], CT with biannual rotation (soybean/soybean/cotton) and [CT1] CT with cotton monoculture. An area of native Cerrado vegetation was used as the reference or baseline. Soil samples were obtained from 0‐ to 5‐, 5‐ to 10‐, 10‐ to 20‐, 20‐ to 30‐, 30‐ to 60‐, and 60‐ to 100‐cm depths. After 9 years of cultivation, soil under NT systems contained higher C concentrations than those under CT (p < 0.05); however, significant differences were restricted to the 0‐ to 5‐cm layer. Stocks of C and N in the 0‐ to 30‐cm depth ranged from 36.2 to 39.8 Mg ha−1 and from 2.00 to 2.22 Mg ha−1, respectively. Despite higher C concentration in the upper layer, NT treatments (NT1, NT2, and NT3) had soil C stocks similar to those of CR1 and CT1. In comparison with Cerrado, C stocks in soil under all cultivated treatments were reduced by 27% in the top 1‐m depth, which represents a C loss of 35 Mg C ha−1 upon conversion from the Cerrado to cultivated land. The least soil bulk density among all treatments was observed for NT1. However, there were no differences in macroporosity and microporosity among NT and CT systems even after 9 years of cultivation. In comparison with CT, principal benefits of NT systems for C sequestration and soil physical improvements are restricted to the surface layer.

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Soil compaction management and soybean yields with cover crops under no-till and occasional chiseling

Cited by 146 publications

References 30 publications

Enhancing soil physical quality and cotton yields through diversification of agricultural practices in central Brazil

Enhancing soil physical quality and cotton yields through diversification of agricultural practices in central Brazil

Soil physical properties and soil organic carbon content in northeast Brazil: long-term tillage systems effects

Soil carbon and nitrogen stocks and physical properties under no‐till and conventional tillage cotton‐based systems in the Brazilian Cerrado

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