scholarly journals A Case Study for Evaluation of GUTD on Soil Compaction and Tractor Performance

2016 ◽  
Vol 8 (2) ◽  
pp. 130
Author(s):  
Saadat Kamgar ◽  
Ehsan Savand Roomi
Keyword(s):  
Fuel Consumption ◽  
Soil Compaction ◽  
Block Design ◽  
Soil Conditions ◽  
Wheel Slip ◽  
Wheel Drive ◽  
Wide Range ◽  
Before And After ◽  
Loam Soil ◽  
All Speeds

<p>Machinery traffic on farm and forest caused to problems in environment and economics by Fossil fuel consumption and soil compaction. According to result of investigation, The GUTD (Gear Up and Throttle Down) method was recommended to decrease fuel consumption. But the wide range of machinery applications, soil conditions and experience of drivers or operators need to have index for ensuring the GUTD method is carried out properly. The purpose of this study was evaluation of GUTD method using MF 399 tractor on instantaneous fuel consumption and soil compaction. The tractor was equipped by sensors, a designed electronic circuit and a computer to measure and record parameters such as fuel consumption, forward speed and wheel slip. This field examination was carried out on tilled land with clay-loam soil and then data were analyzed in a randomized complete block design with three replications. Considered factors were included four speed levels (1.6, 3.2, 6.4, 12.8 km h<sup>-1</sup>), three levels of gear (first, second and third) and two levels of wheel drive (2WD and 4WD). Parameters of cone index and bulk density were used to determine soil compaction.Variations in compaction of before and after tractor passage were calculated in each plot. Statistical analysis in each speed showed that factor of gear in variations of soil compaction was significant at all speeds except 12.8 km h<sup>-1</sup> and instantaneous fuel consumption was reduced by GUTD at each of constant speed except the mentioned speed. This research showed that instantaneous fuel consumption can be considered as appropriate index for selecting the best gear and speed in terms of fuel consumption and soil compaction.<strong></strong></p>

scholarly journals Insight into the Productivity, Cost and Soil Impacts of Cable-assisted Harvester-forwarder Thinning in Western Oregon

2019 ◽  
Vol 66 (1) ◽  
pp. 82-96 ◽  
Author(s):  
Preston Q Green ◽  
Woodam Chung ◽  
Ben Leshchinsky ◽  
Francisca Belart ◽  
John Sessions ◽  
...  
Keyword(s):  
Pacific Northwest ◽  
Soil Compaction ◽  
The United States ◽  
Soil Conditions ◽  
Productivity Cost ◽  
System Productivity ◽  
Machine Productivity ◽  
Before And After ◽  
Harvesting Systems ◽  
Soil Measurements

Abstract Cable-assisted (or tethered) mechanized harvesting has recently been introduced to the Pacific Northwest of the United States, and is rapidly being adopted by the forest industry. However, potential environmental impacts, productivity and cost of the new harvesting systems have not been well-assessed. This study aims to examine the effects of cable assistance on soil compaction, system productivity and cost through a field-based experiment. A harvester-forwarder system was used to thin a harvest unit on dry soils in western Oregon, with and without cable-assistance. We conducted a detailed time study during operations and collected soil measurements before and after machine passes. Machine productivity ranged from 28.75 to 92.36 m3 per scheduled machine hour, with resulting unit costs for untethered and tethered systems ranging from $13.19 to $18.13/m3. Our results showed reduced soil impacts in both extent and degree of soil compaction when cable assistance was employed. The reduced extent of soil impacts is attributed to a reduction in track wander owing to the operative tensions of the tether cable, and the smaller increase in soil density appears to be attributed to combined effects of initially denser soil conditions and reduced shear displacement as a result of cable-assistance.

EFFECTS OF SOIL COMPACTION ON DEVELOPMENT AND YIELD OF CORN (MAIZE)

1978 ◽  
Vol 58 (2) ◽  
pp. 435-443 ◽  
Author(s):  
G. S. V. RAGHAVAN ◽  
E. McKYES ◽  
G. GENDRON ◽  
B. BORGLUM ◽  
H. H. LE
Keyword(s):  
Plant Growth ◽  
Contact Pressure ◽  
Soil Compaction ◽  
Prediction Models ◽  
Growth Models ◽  
Block Design ◽  
Soil Bulk Density ◽  
Growth And Yield ◽  
Before And After ◽  
Four Blocks

A 100-plot experiment was performed during the growing season of 1976 in a Ste. Rosalie clay soil, using a randomized complete-block design with 25 treatments of machinery traffic within each of four blocks. Three vehicle contact pressures, four numbers of tractor passes, before or after seeding groups and a control of zero traffic were used to relate the growth and yield variables to wheel traffic and resulting soil compaction. Plant emergence and tasselling were delayed with increasing machinery traffic. The plant growth rate monitored at 29, 44, 60, 74 and 88 days from the seeding time was dramatically different from plot to plot. Growth models at different times of the season were derived in terms of the product of contact pressure and number of passes of the vehicle. Plant and ear moisture contents were higher in plots with heavier traffic treatment. Yield, ear yield and grain yield all decreased with increases in machine contact pressure and passes. The reduction in yield was over 50% in some cases, suggesting that careful traffic planning is essential to obtain better production in agricultural fields. Prediction models were obtained for all the plant growth characteristics in terms of traffic variables for both before- and after-seeding treatments. A relation for yield in terms of soil bulk density was established.

Influence of Cultural Management on Compaction of a Cerrado Latosol

2019 ◽  
pp. 1-11
Author(s):  
Matheus Azevedo Dos Santos ◽  
Aloisio Bianchini ◽  
Pedro Silvério Xavier Pereira ◽  
Rodrigo Fernandes Daros ◽  
Matheus Santos de Deus ◽  
...  
Keyword(s):  
Cover Crops ◽  
Soil Compaction ◽  
Technological Development ◽  
Block Design ◽  
Soil Conditions ◽  
Soil Density ◽  
Cultural Management ◽  
Randomized Complete Block Design ◽  
The One ◽  
Alternative Practices

Soil compaction is a process that negatively affects the availability of water and nutrients to plants. Therefore, it is necessary to evaluate alternative practices of cultural management in order to reduce soil compaction. The experimental area is located in the Foundation for Research and Technological Development Rio Verde, where 13 treatments were installed with different systems of cultural management, all rotated with soy. A randomized complete block design (DBC) was used for this experiment, with three blocks (one repetition per block), thirteen treatments and two depths of soil (0-10 cm and 10-20 cm). Physical analyzes were soil resistance to penetration, soil density, and soil moisture at the time of collection. The treatment in which the soil was stirred during the fallow period was the one that presented the lowest resistance of the soil to penetration, followed by the treatment where a mixture of cover crops was used in the second harvest, and the treatment where soybean was harvested and brachiaria in the second crop, using corn with brachiaria every two years, was the one that presented lower soil density, followed by the treatment with stirring during fallow season. Planting areas with a greater diversity of rotating plants presented as a good proposal of soil management, as they provide ideal soil conditions for the crop and for the use of rainwater or irrigation.

scholarly journals Agronomic performance of maize and Brachiaria grasses cultivated at monocropping and intercropping in a compacted Latossolo

2020 ◽  
pp. 1533-1540
Author(s):  
Aline Borges Torino ◽  
Lucas Freitas do Nascimento Júnior ◽  
Marlete Ferreira de Brito ◽  
Jordaanny Danyelly Pereira Lima ◽  
Wainer Gomes Gonçalves ◽  
...  
Keyword(s):  
Soil Compaction ◽  
Block Design ◽  
Forage Yield ◽  
Soil Conditions ◽  
Brachiaria Brizantha ◽  
Crop Season ◽  
Undisturbed Soil ◽  
Physical Quality ◽  
Brachiaria Ruziziensis ◽  
Simulated Grazing

Obtaining adequate yields by intercropping maize and grasses in soils with poor physical quality is a challenge for managing crop-livestock systems in the Cerrado region. The aim of the present study was to verify the viability of maize in intercropping with Brachiaria grasses in the second crop season in a physically degraded Latossolo. The experiment was carried out in accordance with a split-plot completely randomized block design with four replications. Seven treatments (T) were evaluated in the plots: Brachiaria brizantha cv. Paiaguas (p), Brachiaria brizantha cv. Xaraes (x), Brachiaria ruziziensis (r) and maize (m) as monocrops (Tp1, Tx1, Tr1 and Tm1) and maize in intercropping with each of the three Brachiaria species (Tp2, Tx2 and Tr2). Two grass management systems were evaluated in each subplot: with (M1) and without simulated grazing (M2) of the grasses. Soil physical quality was estimated by the least limiting water range of undisturbed soil samples collected at layers of 0-0.05, 0.05-0.10 and 0.10-0.20 m. Crop agronomic yield evaluations were carried out for maize, and both the forage biomass and mulch biomass of the grasses were evaluated. Water deficit during the reproductive crop phase and soil compaction explained the low productivity observed in the experiments. The replacement of the maize crops with pasture during the second crop season is indicated in physical degradation soil conditions. Use of the Brachiaria ruziziensis grass in the intercropping system under simulated pasture grazing resulted in a satisfactory forage yield in the off-season and was the best alternative for oversowing in the intercropping systems. Mulch biomass production in intercropping systems with simulated grazing did not reach adequate amounts for soil cover, and suppression of the last cut could potentially result in increased biomass accumulation and system viability. Overall, it is recommended that maize cultivation during the second crop season in Brazil be preceded by a soil compaction diagnosis.

Soil mechanical resistance measurement by an unique multi-cone tips horizontal sensor

2012 ◽  
Vol 26 (1) ◽  
pp. 61-64 ◽  
Author(s):  
A. Sharifi ◽  
A. Mohsenimanesh
Keyword(s):  
Soil Compaction ◽  
Block Design ◽  
Resistance Measurement ◽  
Sensor Data ◽  
Mechanical Resistance ◽  
Cone Penetrometer ◽  
Randomized Block Design ◽  
System Data ◽  
Loam Soil ◽  
Soil Bin

Soil mechanical resistance measurement by an unique multi-cone tips horizontal sensor Amulti-tips horizontal sensor was developed and mounted horizontally on a tine face by shafts. The length of shafts was reduced from top to down the tine. The developed system was evaluated in the controlled soil bin laboratory conditions with clay loam soil and uniform soil moisture content. The experiment was designed with soil compaction at three levels of uniform and non-uniform soil compaction in completely randomized block design with four replications. Vertical standard penetrometer was also used to compare with horizontal sensor data at whole working depth of 0 to 400 mm. The results indicated that there is a correlation with R2 = 0.86 between soil cone penetrometer values and the horizontal soil mechanical resistance measurement system data. It can be concluded that the idea of reducing the length of the tips from top to down the tine face would give promising results.

scholarly journals The Effect of Some Primary Tillage Equipment on Performance Efficiency Under Two Level of Soil Moisture Content and Different Machinery Unit Speeds

2018 ◽  
Vol 7 (2) ◽  
pp. 206-218
Author(s):  
Yasir A. Alsayyah ◽  
Hussein A. Jebur
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Fuel Consumption ◽  
Soil Moisture Content ◽  
Block Design ◽  
Field Capacity ◽  
Significant Difference ◽  
Primary Tillage ◽  
Loam Soil ◽  
Drawbar Pull

A field experiment was conducted in the experiment fields of the college of agriculture - University of Baghdad – Abu Ghraib , 2016 in a silt clay loam soil , to Evaluate the effect of some primary tillage equipment and two of levels of soil moisture content in some of performance efficiency indicator for different forward speed , ArmaTrac 845e and ITM 285 New tractor with moldboard and chisel and sweep plow as a machinery unit have been used in this study . Two levels of soil Moisture content include (18 – 20 % ) and (14 – 16%) represented main plot , three types of plow ( moldboard , chisel and sweep) represent sub plot , five machinery speeds included ( 1.5 , 2.53 , 3.75 , 5.3 and 6.71 km.hr-1 ) represent sub plot , Slippage percentage (%) , fuel consumption (L.hr-1) , drawbar pull (KN) , Field capacity (he.hr-1) are have beenbeen measured in this study  . And the results have been analyzed by using the order of the spilt - spilt - plot with randomize complete block design with three replicates and tested by the way averages less significant difference and the level of probability of 0.05 . The results show that : the soil  moisture content ( 14 – 16 % ) has got a less value of slippage percentage % , fuel consumption L.hr-1 , drawbar pull Kn and higher field capacity ha.hr-1 , and sweep plow has got a less value of slippage percentage , fuel consumption and drawbar pull , and the chisel plow has got a higher field capacity , and when the tractor speed is increased it leads to aincrease in the slippage and fuel consumption and drawbar pull and field capacity will be anincrease .

scholarly journals ESTIMATING ECONOMICAL COSTS FOR OPERATING AGRICULTURAL MACHINES AND EQUIPMENT DURING PLOWING OPERATIONS

2016 ◽  
Vol 47 (1) ◽  
Author(s):  
Taha & et al.
Keyword(s):  
Fuel Consumption ◽  
Block Design ◽  
Labor Costs ◽  
Mean Values ◽  
Maintenance And Repair ◽  
Repair Costs ◽  
Loam Soil ◽  
Chisel Plow ◽  
Significant Superiority ◽  
Moldboard Plow

This study was conducted in a field of Al-mahmodia Region in Baghdad , 2014 to estimate the costs of operating Massy Ferguson tractor and tillage equipment  in a clay loam soil. Three factors studied through the experiment included:- Three linear speeds for tractor were 2.85, 3.77 and 5.83 km/hr. Two types of plows included moldboard and chisel plow and two systems of plowing included one passage and orthogonal passage for each type of plows. The properties which were studied included fuel consumption, oil costs, maintenance and repair costs, labor costs per hectare. The research was done by applying the factorial experiment according to randomized complete block design with four replications and data were analyzed statistically, mean values of each treatment were compared using LSD at the 0.05 level of confidence to test significance. The results showed the following: Using chisel plow in the orthogonal pass led to increase  the rate of fuel consumption, oil costs, maintenance and repair costs and labor costs per hectare, while moldboard plow in one passage achieving decrease the fuel consumption, oil costs, maintenance and repair costs and labor costs . Increasing linear speeds of tractor from 2.85 to 3.77 and 5.83 km/hr caused decreasing in fuel consumption, oil costs, maintenance and repair costs and labor costs per hectare. Linear speed of tractor 5.83 km/hr in one passage indicated significant superiority up on 2.85 and 3.77 km/hr. in achieving decrease the rate of fuel consumption for one hectare.

scholarly journals Risk of farmland degradation induced by traffic of tracked and a tired vehicles: Soil stress measurements and model simulations

2021 ◽  
Author(s):  
Ding Zhao ◽  
Lars J. Munkholm ◽  
Loraine ten Damme ◽  
Mathieu Lamandé
Keyword(s):  
Soil Compaction ◽  
Maximum Stress ◽  
Sandy Loam ◽  
Horizontal Stress ◽  
Vertical Stress ◽  
Negative Effects ◽  
Soil Stress ◽  
Before And After ◽  
Loam Soil ◽  
Subsoil Compaction

Vehicle traffic induced soil compaction has negative effects on soil functions and ecosystems which may cause the degradation of farmland. This study investigated the magnitude and distribution of soil stress under the tracked and tired vehicles to explore the penitential of using rubber track instead of tire to reduce the subsoil compaction. The field experiment in this study included three replicates and was conducted on a sandy loam soil. Vertical and horizontal soil stress were measured under the centerlines of the rubber track and tire at a depth of 0.35m by using embedded transducers. The SoilFlex model was applied to simulate vertical and horizontal stress in the soil profile. Unevenly distributed vertical and horizontal stress were observed under the tire and rubber track. The vertical stress was characterized by one peak under the tire and several peaks under each of track wheels and rollers. The horizontal stress exhibited peaks before and after the tire and each of track wheels and rollers. The measured maximum stress was significantly higher under the tire than under the rubber track: that is, vertical and horizontal stress were approximately 3.4 and 2.0 times higher, respectively. This finding indicated that using rubber track maybe an effective method to reduce soil stress when compared with the tire, and was more effective in reducing the vertical stress than horizontal stress. Improving the uniformity of stress distribution under the track is the key to improve the ability of tracked vehicle to mitigate soil compaction.

scholarly journals Field performance of an agricultural tractor fitted with rubber tracks on a low trafficable soil

2015 ◽  
Vol 46 (4) ◽  
pp. 162 ◽  
Author(s):  
Giovanni Molari ◽  
Michele Mattetti ◽  
Matthew Walker
Keyword(s):  
Fuel Consumption ◽  
Soil Compaction ◽  
Field Performance ◽  
Unit Weight ◽  
Soil Conditions ◽  
Comparative Tests ◽  
Traction Device ◽  
Tractive Efficiency ◽  
Agricultural Tractor ◽  
Engine Power

The introduction of rubber tracks on tractors has allowed more engine power per unit weight than with steel-tracked tractors, together with a reduction in soil compaction and higher on-road speeds. Recently, triangular rubber tracks able to be adapted on conventional wheeled tractors have been introduced. In this context, the goal of the paper is to evaluate the performance of a tractor with four triangular rubber tracks with respect to those of a wheeled tractor; the comparative tests consist of ploughing under on low trafficable and workable soil. The results obtained have shown a higher tractive efficiency, lower soil compaction and up to 20% lower specific fuel consumption for the fully tracked tractor. These results are in accordance with previous tests conducted with the triangular rubber tracks on highly trafficable soil, although in the present case, the dynamic traction ratio is markedly lower due to the low trafficable soil. The use of triangular rubber tracks is therefore justified on low trafficable soils and more in general on different soil conditions, since the soil is less compacted by such traction device.

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