scholarly journals Researching the parameters of the disc plough and its smooth run throughout the tillage depth

2021 ◽  
Vol 868 (1) ◽  
pp. 012058
Author(s):  
A Tukhtakuziyev ◽  
SH U Ishmuradov ◽  
R B Abdumajidov
Keyword(s):  
Tillage Depth

scholarly journals Current Knowledge and Future Directions for Improving Subsoiling Quality and Reducing Energy Consumption in Conservation Fields

Agriculture ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 575
Author(s):  
Shangyi Lou ◽  
Jin He ◽  
Hongwen Li ◽  
Qingjie Wang ◽  
Caiyun Lu ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Cover Crops ◽  
Current Knowledge ◽  
High Energy ◽  
Field Application ◽  
Research Progress ◽  
Monitoring And Control ◽  
Future Directions ◽  
Tillage Depth ◽  
And Control

Subsoiling has been acknowledged worldwide to break compacted hardpan, improve soil permeability and water storage capacity, and promote topsoil deepening and root growth. However, there exist certain factors which limit the wide in-field application of subsoiling machines. Of these factors, the main two are poor subsoiling quality and high energy consumption, especially the undesired tillage depth obtained in the field with cover crops. Based on the analysis of global adoption and benefits of subsoiling technology, and application status of subsoiling machines, this article reviewed the research methods, technical characteristics, and developing trends in five key aspects, including subsoiling shovel design, anti-drag technologies, technologies of tillage depth detection and control, and research on soil mechanical interaction. Combined with the research progress and application requirements of subsoiling machines across the globe, current problems and technical difficulties were analyzed and summarized. Aiming to solve these problems, improve subsoiling quality, and reduce energy consumption, this article proposed future directions for the development of subsoiling machines, including optimizing the soil model in computer simulation, strengthening research on the subsoiling mechanism and comprehensive effect, developing new tillage depth monitoring and control systems, and improving wear-resisting properties of subsoiling shovels.

DEM simulation for draft force prediction of moldboard plow according to the tillage depth in cohesive soil

2021 ◽  
Vol 189 ◽  
pp. 106368
Author(s):  
Yeon-Soo Kim ◽  
Md. Abu Ayub Siddique ◽  
Wan-Soo Kim ◽  
Yong-Joo Kim ◽  
Sang-Dae Lee ◽  
...  
Keyword(s):  
Cohesive Soil ◽  
Dem Simulation ◽  
Force Prediction ◽  
Draft Force ◽  
Tillage Depth ◽  
Moldboard Plow

Design and Evaluation of the Key Units in a Rapeseed Direct Seeder Integrated with Plowing-Rotating Combined Tillage

2021 ◽  
Vol 37 (6) ◽  
pp. 1005-1014
Author(s):  
Guoliang Wei ◽  
Qingsong Zhang ◽  
Biao Wang ◽  
QingXi Liao
Keyword(s):  
Field Experiments ◽  
Optimal Parameter ◽  
Structural Parameters ◽  
List Type ◽  
Oil Crops ◽  
Orthogonal Experiments ◽  
Heavy Soil ◽  
Tillage Depth ◽  
Working Parameters ◽  
Orthogonal Field

HighlightsThe seeder combined the plowing and rotating tillage to overcome the heavy soil and a large amount of straws.The plow could lift and turn the soil and straw before rotary tillage.The optimal working parameters of the seeder were obtained by orthogonal field experiments.Abstract. Rapeseed, one of the most important oil crops in China, is mainly planted in the mid-lower reaches of the Yangtze River. However, limited by the special long-term rice-rapeseed rotation, rotary tillage is applied in most of the planted areas apply instead of plow tillage, leading to a shallow arable layer. On the other hand, maintaining a high-quality seedbed for rapeseed becomes a challenge because a large amount of straw remains buried in the soil. As a solution, a rapeseed direct seeder that combines plow tillage and rotary tillage was designed. The structure of the plowing unit, whose key components were a lifting-turning plow and symmetrical plow, was analyzed based on the forming principle of the plow. Furthermore, a mechanical soil throwing model of the rotary tillage blade was built to determine the structural parameters. Then, the interaction between the rotary tillage unit and the lift-turning plow was analyzed. Finally, the performance and optimal parameters were evaluated by orthogonal field experiments. The seedbed after the operations indicated that the seeder could achieve the function of turning the soil and straw first and then rotating the soil with good passability, mixing the straw and the soil, flattening the surface of the seed bed, and stabilizing the tillage depth. Orthogonal experiments showed that the optimal working parameters of the seeder were as follows: the tillage depth was 180 mm, the equipment forward speed was 2.1 km/h, and the speed of the rotary tillage blade was 250 r/min. Under the optimal parameter combination, the power consumption of the seeder, the thickness of the tillage layer, the crop residue burial efficiency, the soil breakage efficiency, and the flatness of the seed bed surface were 30.48 kW, 231 mm, 90.88%, 93.26%, and 21.15 mm, respectively. The working performance of the seeder could meet the tillage requirements of rapeseed planting. Keywords: Direct seeder, Evaluation, Plow, Plowing-rotating combined tillage, Rapeseed.

scholarly journals Mitigation of CO2 and N2O Emission from Cabbage Fields in Korea by Optimizing Tillage Depth and N-Fertilizer Level: DNDC Model Simulation under RCP 8.5 Scenario

2019 ◽  
Vol 11 (21) ◽  
pp. 6158 ◽  
Author(s):  
Wonjae Hwang ◽  
Minseok Park ◽  
Kijong Cho ◽  
Jeong-Gyu Kim ◽  
Seunghun Hyun
Keyword(s):  
Model Simulation ◽  
Supply And Demand ◽  
N2o Emission ◽  
Economic Losses ◽  
Change Scenario ◽  
N2o Emissions ◽  
Low Carbon ◽  
Farming Practices ◽  
Dndc Model ◽  
Tillage Depth

In this study, we applied the Denitrification and Decomposition model to predict the greenhouse gas (GHGs; CO2 and N2O) emissions and cabbage yields from 8072 cabbage fields in Korea in the 2020s and 2090s. Model outputs were evaluated as a function of tillage depth (T1, T2, and T3 for 10, 20, and 30 cm) and fertilizer level (F1, F2, and F3 for 100, 200, and 400 kg N ha−1) under the Representative Concentration Pathways 8.5 climate change scenario. For both time periods, CO2 emissions increased with tillage depth, and N2O emissions were predominantly influenced by the level of applied N-fertilizers. Both cabbage yields and GHGs fluxes were highest when the T3F3 farming practice was applied. Under current conventional farming practices (T1F3), cabbage yield was projected at 64.5 t ha−1 in the 2020s, which was close in magnitude to the predicted cabbage demand. In the 2090s, the predicted cabbage supply by the same practice far exceeded the projected demand at 28.9 t ha−1. Cabbage supply and demand were balanced and GHGs emissions reduced by 19.6% in the 2090s when 94% of the total cabbage farms adopted low carbon-farming practices (e.g., reducing fertilizer level). Our results demonstrate the large potential for Korean cabbage farms to significantly contribute towards the mitigation of GHGs emissions through the adoption of low-carbon farming practices. However, in order to incentivize the shift towards sustainable farming, we advise that lower yield and potential economic losses in farmlands from adopting low-carbon practices should be appropriately compensated by institutional policy.

scholarly journals Tillage erosion: a review of controlling factors and implications for soil quality

2006 ◽  
Vol 30 (4) ◽  
pp. 443-466 ◽  
Author(s):  
K. Van Oost ◽  
G. Govers ◽  
S. De Alba ◽  
T. A. Quine
Keyword(s):  
Soil Properties ◽  
Water Erosion ◽  
Controlling Factors ◽  
Conservation Strategies ◽  
Soil Productivity ◽  
Data Set ◽  
Erosion Rates ◽  
Soil Redistribution ◽  
Tillage Depth ◽  
Tillage Erosion

Tillage erosion has been identifed as an important global soil degradation process that has to be accounted for when assessing the erosional impacts on soil productivity, environmental quality or landscape evolution. In this paper, we present a summary of available data describing tillage erosion. This provides insights in the controlling factors determining soil redistribution rates and patterns by tillage for various implements used in both mechanized and non-mechanized agriculture. Variations in tillage depth and tillage direction cause the largest variations in soil redistribution rates, although other factors, such as tillage speed and implement characteristics, also play an important role. In general, decreasing tillage depth and ploughing along the contour lines substantially reduce tillage erosion rates and can be considered as effective soil conservation strategies. Implement erosivities reported in literature, characterized by the tillage transport coeffcient, are very consistent and range in the order of 400–800 kg m-1yr-1 and 70–260 kg m-1yr-1 for mechanized and nonmechanized agriculture, respectively. Comparison of tillage erosion rates with water erosion rates using a global data set indicates that tillage erosion rates are at least in the same order of magnitude or higher than water erosion rates, in almost all cases. Finally, we discuss how tillage erosion increases the spatial variability of soil properties and affects soil nutrient cycling. Considering the widespread use of tillage practices, the high redistribution rates associated with the process and its direct effect on soil properties, it is clear that tillage erosion should be considered in soil landscape studies.

scholarly journals Effect of subsoil tillage depth on nutrient accumulation, root distribution, and grain yield in spring maize

2014 ◽  
Vol 2 (5) ◽  
pp. 297-307 ◽  
Author(s):  
Hongguang Cai ◽  
Wei Ma ◽  
Xiuzhi Zhang ◽  
Jieqing Ping ◽  
Xiaogong Yan ◽  
...  
Keyword(s):  
Grain Yield ◽  
Root Distribution ◽  
Nutrient Accumulation ◽  
Spring Maize ◽  
Tillage Depth

ROTATIONAL TOOL TO SURFACE SOIL TILLAGE BY ELLIPTICAL DISCS

2016 ◽  
Vol 11 (2) ◽  
pp. 64-67
Author(s):  
Алиакберов ◽  
Ilfat Aliakberov ◽  
Яхин ◽  
Sergey Yakhin ◽  
Гайнутдинов ◽  
...  
Keyword(s):  
Surface Soil ◽  
Soil Tillage ◽  
Technical Solution ◽  
Spatial Motion ◽  
Axial Loads ◽  
Structural Scheme ◽  
Basic Parameters ◽  
Tillage Depth

Analyzing a number of scientists’ research on development of disk tillers, working units of which make a complex spatial motion, we proposed the construction of rotary implement, which contains the elliptical wheels, fixed to the battery shaft is strictly at a certain angle. The article presents the structural scheme of this tool and theoretical dependences for the determination and justification of its basic parameters. The technical solution allows to mutually balance the axial loads, provides uniformity of soil tillage depth, improves the technological stability of instruments and the effectiveness of its work.

Impact of Soil Firmness and Tillage Depth on Irrigated Maize Silage Performance

2017 ◽  
Vol 33 (4) ◽  
pp. 491-498 ◽  
Author(s):  
A. M. Zeyada ◽  
K. A. Al-Gaadi ◽  
E. Tola ◽  
R. Madugundu ◽  
A. G. Kayad
Keyword(s):  
Plant Height ◽  
Mean Value ◽  
Plant Population ◽  
Growth Stages ◽  
Eastern Region ◽  
Maize Silage ◽  
Undisturbed Soil ◽  
Soil Medium ◽  
High Soil ◽  
Tillage Depth

Abstract. A field experiment was conducted to investigate the response of maize silage ( L.) to tillage depth under different soil firmness levels. The study was carried out on a 16 ha center-pivot irrigated field in a commercial farm located in the eastern region of Saudi Arabia. A soil firmness map was generated and used as a management map. This map was divided into three soil firmness zones based on soil cone index (low: 617 to 1270 kPa for a 0 to 15 cm depth in undisturbed soil, medium: 1271 to 1652 kPa and high: 1653 to 2306 kPa). Three tillage depth treatments (10, 20, and 25 cm) were imposed on each of the three soil firmness zones, using a tandem disc harrow. Maize growth parameters [plant population, plant height, and Normalized Difference Vegetation Index (NDVI)] and maize silage yield were used to evaluate the response of the maize crop to tillage depth. The results revealed that soil firmness and tillage depth at both early (25 days after sowing) and late (60 days after sowing) growth stages did not introduce significant effects on maize plant population. However, the plant height measured at 60 days after sowing showed a significant response to soil firmness. The lowest mean value of plant height (114.4 cm) was recorded at the high soil firmness level, while the greatest mean value (136.3 cm) was recorded under low soil firmness level. Also, significant differences in maize silage yield were recorded under different soil firmness levels and tillage depths. For maize silage production, a tillage depth of 10 cm was observed to be optimum for areas of low and medium soil firmness. For areas of high soil firmness, the optimum tillage depth was 20 cm. Keywords: Disc harrow, Kriging, Maize, Maps, Penetrometer, Tillage depths.

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