Mobilização do solo e profundidade de semeadura por diferentes mecanismos para o manejo do sulco de semeadura em uma semeadora direta

Brandelero, Evandro Martin; Araújo, Augusto Guilherme de; Ralisch, Ricardo

doi:10.1590/s0100-69162014000200008

Cited by 5 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Swelling was reduced by 42.90% and 72.71% for the smooth coulter and associations without smooth coulter and the association that used no-coulter. This situation is similar to the one observed by Brandelero et al (2014) when evaluating hoe furrow openers, coulters, row cleaners and covering mechanisms in a no-till seeder. Furthermore, the use of coulters associated to furrow openers reduces swelling because they promote a cut in a section of the soil prior to the passage of the furrower, especially in association with the hoe, where it was observed an average decrease of 20%.…”

Section: Soil Swellingsupporting

confidence: 84%

“…Another important feature that results from the elevation area is swelling, which represents the increase in soil volume after the use of tools (Brandelero et al, 2014), due to the increase in the voids between solid particles.…”

Section: Methodsmentioning

confidence: 99%

“…According to Jin et al (2012) and Brandelero et al (2014), different furrow opener devices have a direct effect on seeding quality, since they behave differently and provide different conditions. Furrow-opening tools for line seeders differ in coulters, used for vegetation cover management, and furrow openers, which can be fixed, as in the case of the hoe, or rotary, namely, doublediscs.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Disturbance of Ultisol soil based on interactions between furrow openers and coulters for the no-tillage system

et al. 2016

View full text Add to dashboard Cite

The present study evaluated the effect of different associations between coulters and fertilizer furrow openers on soil disturbance, furrow depth and width, according to forward speed. The study was conducted on a farm in Santa Maria (Brazil/RS), in soil classified as sandy loam Ultisol. The experiment consisted of 24 combinations of treatments with three replications in a 2×3×4 factorial experiment. The combinations were formed by the interaction of the factors including: two types of furrow openers (hoe and double-disc), three types of coulters (no-coulter, smooth and offset fluted) and four levels of forward speed (1.11, 1.67, 2.22 and 2.78 m/s). Soil elevation and soil disturbance area profiles were obtained with the use of a micro profilometer, and disturbance values were calculated with the aid of computer software program Auto Cad. The disturbance area was not affected by speed; it was greater when using the hoe opener, and in association with the offset fluted coulter. Speed was inversely proportional to the depth of the furrows made by the hoe opener. Furthermore, the hoe caused the greatest furrow width (0.26 m) in comparison with the double-disc (0.24 m). The use of different coulters associated with furrow openers increased this variable (0.23 m for the no-coulter condition, 0.25 m with smooth and 0.26 m with offset fluted). The use of coulters combined with furrow openers reduces soil swelling, in approximately 8% for the smooth and 20% for the offset fluted.

show abstract

Section: Soil Swellingsupporting

confidence: 84%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Disturbance of Ultisol soil based on interactions between furrow openers and coulters for the no-tillage system

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Opening angle of 15º between wheels helps close the furrow; however, attention should be paid to the accumulation of soil on the row, which may cause higher resistance to seedling emergence. Thus, the opening angle can be used without the need for sweeping wheels and covering mechanisms, which have great importance in burying the seed deeper in the soil, according to Brandelero et al (2014).…”

Section: Ssmentioning

confidence: 99%

Pressure and angle of the seed-fertilizer drill press wheel on corn emergence

Dugato

Palma

2018

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

In precision seed-fertilizer drills, the soil compaction mechanism is responsible for closing the furrow, pressing the soil over the seed. Among the available models, the most used is the V-type wheel system, with several options to regulate the wheel opening angle and pressure exerted on the soil. This study was carried out in the experimental area of the Federal University of Fronteira Sul - Campus Cerro Largo, in an clayey Red Latosol. Parameters related to corn emergence and the seedbed characteristics were evaluated at different regulations of opening angle and pressure of the compaction mechanism. The results indicate that mechanism regulations had no influence on emergence speed, emergence speed index and population of corn plants, under the studied conditions. However, the treatment with highest load and parallel alignment of the wheels caused lower values of elevated area and swelling. Treatments with 15° opening angle caused accumulation of soil in the center of the row, affecting the elevation height.

show abstract

Low disturbance seeding suppresses weeds in no‐tillage soyabean

Theisen

Bastiaans

2015

Weed Research

View full text Add to dashboard Cite

Germination is a key process in the dynamics of weed populations. In no-tillage systems, crop seeding is often found to induce seed germination in the seeding strip. In this research, experiments to investigate options for reducing weed seedling establishment were conducted in no-till soyabean fields located in two sites in south Brazil. A first experiment revealed that a reduction in emergence of some important weed species can be achieved by lowering seeding speed. Further experiments showed the ability of a modified seeder to contribute to an additional reduction in weed establishment. On the modified seeder, coulter discs were equipped with lateral blades, to diminish soil disturbance and to maintain a uniform soil cover by properly cutting the mulch layer. In a field with a high level of residues, the modified seeder, in contrast to the standard seeder, prevented the increase of soil exposure when seeding at high speed. The predominant weeds were annual species. Averaged over all seeding rates, the new equipment led to a 56% reduction in within-row weed density, compared with the standard seeder. Regardless of seeder type, overall weed density increased with seeding speed, but with the modified seeder, this increase was only half that of the standard seeder. The modified seeder reduced weed biomass by 30% and increased soyabean grain yield by 42%. The research demonstrated that relatively simple changes, like a minor modification to a seeder and a lower seeding speed, can contribute to more diverse and sustainable alternatives to predominantly chemical-oriented weed management strategies.

show abstract

Mobilização do solo e profundidade de semeadura por diferentes mecanismos para o manejo do sulco de semeadura em uma semeadora direta

Cited by 5 publications

References 14 publications

Disturbance of Ultisol soil based on interactions between furrow openers and coulters for the no-tillage system

Disturbance of Ultisol soil based on interactions between furrow openers and coulters for the no-tillage system

Pressure and angle of the seed-fertilizer drill press wheel on corn emergence

Low disturbance seeding suppresses weeds in no‐tillage soyabean

Contact Info

Product

Resources

About