Desenvolvimento Da Cultura Do Milho Sob Efeitos De Diferentes Profundidades De Compactação Do Solo

Labegalini, Nayara Spricigo; Buchelt, Antônio Carlos; Andrade, L.L.S.; Oliveira, Samieli Camargo de; Campos, Luana Marques

doi:10.32404/rean.v3i4.1102

Cited by 17 publications

(12 citation statements)

References 7 publications

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“…In this study, the treatments established by additional compaction induced by tractors were not enough in altering root growth. It would be expected a high concentration of thick roots that encircles the compressed soil layer and with low penetration in this layer (Labegalini et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

Structural Quality Indicators in Compacted Oxisols Grown With Corn

Rossetti

Centurion

2020

Rev. Agric. Neotrop.

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In the face of the elevated cost of economic and environmental order to recover degraded soil, the monitoring of the structural quality of the soil through physical and plant indicators is recommended. This way, this work aimed to verify which parameters may be used together with soil penetration resistance (PR), after compression induced by agricultural machinery traffic in Haplustox (LVd) and an Eutrustox (LVef), grown with corn. The experiment was conducted with a randomized block design in a split-plot scheme with four replications. Five treatments and three soil layers (0-0.10; 0.10-0.20, and 0.20-0.30 m) for each soil class were evaluated. The treatments were: NC = conventional preparation without additional compression; C14, C17, and C110 = one pass of a tractor of 4, 7, and 10 Mg, respectively; C310= three passes of the tractor of 10 Mg. The variables evaluated were aggregate stability index, soil density (Ds), soil porosity, PR, and root and height variables, diameter, and kernel yield of the corn crop. PR increased with higher compression in the LVd, and in C14, C17, C110, and C310 in the layer of 0.10-0.30 m in LVef. Ds and root area of the corn are useful to analyze the structural quality of the soil together with the PR.

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Section: Resultsmentioning

confidence: 99%

Structural Quality Indicators in Compacted Oxisols Grown With Corn

Rossetti

Centurion

2020

Rev. Agric. Neotrop.

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“…The plant search for water and nutrients depends on the root distribution in the soil profile, which, in turn, depends on the soil physical and chemical conditions that, are susceptible to changes function of management. In Brazil, high level of soil compaction the 0.1-0.2 m layer has been observed under no-till conditions (Franchine et al, 2011), which can limit both root and aboveground crop growth (Bergamin et al, 2010;Labegalini et al;2016). Two other factors that also influence the development of the crops rooting system are the presence of toxic aluminum (Al 3+ ) and the low pH of the soil profile.…”

Section: Introductionmentioning

confidence: 99%

Mitigating the effects of future climate on maize productivity

Magalhães¹,

Andrade²,

Lopes³

et al. 2020

AgroM

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Current climate changes affect agricultural production. Crop management strategies can be used to mitigate these effects. This study was carried out to evaluate the use of crop and soil management strategies to mitigate the effects of future climate on maize yield in mesoregions of the state of Minas Gerais, Brazil. The CSM-CERES-Maize model was used to simulate the effect of maize root system depth and of the amount of plant residue left on the soil surface by the previous crop in maize yield for different scenarios of change in precipitation and solar radiation. The decrease in rainfall volume reduced the average maize yield in some regions by more than 50%. The increase in solar radiation maize yield rise, while its reduction caused more than 20% yield drop in most regions. The management strategies evaluated have the potential to mitigate such effects.

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“…The impact in the soil may compromise the growth of grasses, as a result of a mechanical barrier caused by compacted layers, resulting in a smaller portion of soil being explored by the roots and consequently less water and nutrients absortion by the plants (Richart et al, 2005(Richart et al, ). 2013Valadã o et al, 2015), leaf area reduction (Foloni et al, 2003), reduction in plant's height and lower aerial biomass production (Santos et al, 2013;Labegalini et al, 2016;Rosa et al, 2019) and lower levels of N, P, Ca and Mg in leaves (Valadã o et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

The Influence of Oxisol Physics Parameters on Dry Matter Production in Grasses of Brachiaria Genus

Silva

Oliveira

Pereira

et al. 2020

JAS

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The aim of this study was to assess the correlation between physical attributes of a Yellow Oxisol and the shoot dry matter production in grasses from the Brachiaria genus in the Brejo region, in Paraíba. The experiment has been conducted since 2005 in an experimental area of the Center of Agricultural Sciences of the Federal University of Paraíba, Areia-PB (6°58’12’’ S; 35°41’15’’ W and 573 m altitude). The experimental design adopted was that of randomized complete blocks (RCB) with 4 treatments and 4 replications. T1- Brachiaria decumbens Stapf.; T2- Brachiaria brizantha (Hochst) Stapf.; T3- Brachiaria humidicola (Rendle) Schwnickerdt Vr.; T4- Brachiaria brizantha MG5 cv. Vitória. The soil in the experimental area was characterized as Dystrophic Yellow Oxisol with clay-sandy texture. Soil samples with disturbed and undisturbed structure were collected within the 0.0-0.10 m layer. The shoot dry matter of grasses was collected in october of 2018. The analyzed variables were: bulk density (BD), compaction degree (CD), total porosity (TP), macroporosity (Ma), microporosity (Mi), field capacity (θFC), permanent wilting point (θPWP), available water content (θAWC), soil aeration capacity (SAC), mean weighted diameter of wet and dry aggregates (Wet and Dry MWD), aggregate stability index (ASI) and saturated hydraulic conductivity (Kθ). The Student’s t-test and Pearson's correlation analysis (p <0.05) were performed. It was concluded that dry matter production was positively influenced by θFC and θPWP. And the increase of the average values of BD, CD, Wet and Dry MWD favored the increase of shoot dry matter production by grasses.

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Desenvolvimento Da Cultura Do Milho Sob Efeitos De Diferentes Profundidades De Compactação Do Solo

Cited by 17 publications

References 7 publications

Structural Quality Indicators in Compacted Oxisols Grown With Corn

Structural Quality Indicators in Compacted Oxisols Grown With Corn

Mitigating the effects of future climate on maize productivity

The Influence of Oxisol Physics Parameters on Dry Matter Production in Grasses of Brachiaria Genus

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