Influência da densidade do solo no desenvolvimento inicial do pinhão-manso cultivado em Latossolo Vermelho eutroférrico

Ohland, Tatiane; Lana, Maria do Carmo; Frandoloso, Jucenei Fernando; Rampim, Leandro; Bergmann, Jaqueline Regina; Cabreira, Danielle Tesche

doi:10.1590/0034-737x201461050004

Cited by 15 publications

(15 citation statements)

References 15 publications

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“…Soil compaction is characterized by changes in the physical properties of a soil due to a specific management practice in which the soil is subjected to a specific pressure, which reduces the soil's volume and increases its penetration resistance and density (Oliveira et al, 2010;Ohland et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Impact of Management on the Physical Attributes of a Dystrophic Yellow Latosol

Fárias¹,

Feitosa²,

Rodrigues³

et al. 2017

JAS

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Soil use and management systems aim to create conditions that are favorable to crop growth. The hypothesis is that areas subject to intensive use of agricultural machinery and animal trampling tend to have a soil structure that is altered by aggregate fragmentation, which causes soil compaction and consequently decreases the soil's physical and hydraulic properties. The aim of this study was to assess and compare the physical and hydraulic parameters of a dystrophic yellow latosol in an area of Cerrado in the municipality of Chapadinha, Maranhão, Brazil under different use and management systems. The following five use and management systems were studied with five replicates: native forest (control), slash-and-burn agriculture, grassland, no-till crop production and conventional tillage. Data analysis was performed using a completely randomized experimental design. The soil's density, macroporosity, microporosity, total porosity, hydraulic conductivity, infiltration, water retention curve, penetration resistance and Soil quality assessment index (S index) were assessed for all management systems. The soil use and management systems were found to have a significant effect on the penetration resistance and the water infiltration rate. The native forest and slash-and-burn agriculture areas provided the highest soil water infiltration rates and the lowest soil penetration resistance. A multivariate analysis identified the variables associated with each soil use and management system. The slash-and-burn agriculture area had the highest S index, which means it provided soil of the best physical quality.

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Section: Introductionmentioning

confidence: 99%

Impact of Management on the Physical Attributes of a Dystrophic Yellow Latosol

Fárias¹,

Feitosa²,

Rodrigues³

et al. 2017

JAS

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“…Borges et al (1986), evaluating the effect of soil compaction in the initial growth of three species of eucalyptus, observed that for the species tested, the negative regression coefficient showed that even small, there was a decrease in the shoot dry mass of the seedlings. Ohland et al (2014), also report a linear decreasing trend of the variable height for the species Jatropha curcas L., being observed a reduction in plant height of approximately 25% to the highest level of compression tested (1.64 kg dm -3 ), when compared with lower density (1.08 kg dm -3…”

Section: Resultsmentioning

confidence: 66%

“…According to Neves et al (2005), it is necessary to adequate number of channels that are large enough to allow the roots may penetrate vertically in the ground and develop. Ohland et al (2014) evaluated the influence of soil density in the initial development of J. curcas L. and reported that densities between 1.50 and 1.64 kg dm -3…”

Section: Resultsmentioning

confidence: 99%

Effect of soil compaction on aerial and root growth of Erythrina velutina Willd.

Araújo¹,

Silva²,

Nóbrega³

et al. 2018

Afr. J. Agric. Res.

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Compaction can be a triggering factor for a process of soil degradation and formation of degraded areas. Understanding plant development in soils compacted is of fundamental importance, since they allow to identify species able to resist the limiting condition of the compaction, being able to be indicated to recover degraded areas that have compacted soils as limiting factor. The objective of this study was to evaluate the initial aerial and root growth of Erythrina velutina in soils subjected to different levels of compaction. The experiment was conducted in a greenhouse located at UECIA/UFRN. A Yellow Latosol of Frankish-sandy texture, from an area of the Jundiaí Agricultural School, was used in pots formed by three overlapping polyvinyl chloride (PVC) rings, 10 cm in diameter and 25 cm in height, with the central ring being compacted. The experimental design was a randomized block design, with six replications, and four levels of soil compaction (1.35, 1.45, 1.60 and 1.80 kg dm-³) were tested, and the following variables: diameter, height, number of leaves, dry mass of shoot and root system in each layer of the columns. The physical impediment in subsurface altered the aerial growth of the seedlings of E. velutina being this reduction more expressive for the dry mass variable of the aerial part. In relation to the root system, E. velutina showed to be a susceptible species to the effects of soil compaction and morphological changes were observed in the roots in soils with a density greater than or equal to 1.45 kg dm-³.

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“…Rondonópolis -MT, 2014. CV -coefficient of variation Ohland et al (2014), also observed that the increase in density levels in Oxisol, influenced the number of safflower and jatropha leaves, with quadratic effect as a function of soil density levels, up to a density of 1.26 Mg m -3 .…”

Section: Number Of Leavesmentioning

confidence: 83%

Safflower genotypes submitted to soil density levels

et al. 2018

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It is essential to have knowledge of changes in soil structure, as a result of agricultural use and its relationship with crop development, especially those with potential for use in new regions, such as the cultivation of safflower (Carthamus tinctorius L.) in the Cerrado. In view of this dynamics, the objective was to evaluate the phytometric components of safflower genotypes submitted to levels of soil densities in Cerrado Oxisol. Ten safflower genotypes were then submitted to compaction (five densities: 1.0, 1, 2, 1.4, and 1.8 Mg m-3) in a completely randomized design with four replications under greenhouse conditions. The plots consisted of an overlap of three rings of polyvinylidene chloride of 0.01 m height each, and the treatments were applied in the intermediate layer. The phytometric components (plant height, number of leaves and stem diameter) and shoot dry mass of the crop were evaluated at 30, 60 and 90 days after sowing. There was no significant interaction between safflower genotypes and soil densities, with the effects being isolated for genotypes and/or densities when significant. For the phytometric characteristics evaluated, the genotypes PI250196, PI301049, PI305173, and PI305205 are more stable about the variations of soil density in comparison to the others. The phytometric components and dry mass of safflower shoot are impaired from the mean density of 1.2 Mg m-3.

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Influência da densidade do solo no desenvolvimento inicial do pinhão-manso cultivado em Latossolo Vermelho eutroférrico

Cited by 15 publications

References 15 publications

Impact of Management on the Physical Attributes of a Dystrophic Yellow Latosol

Impact of Management on the Physical Attributes of a Dystrophic Yellow Latosol

Effect of soil compaction on aerial and root growth of Erythrina velutina Willd.

Safflower genotypes submitted to soil density levels

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