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1. Optimisation of installation parameters of subsoiler’ wing using the discrete element method

Author:
Wang, Xuezhen; Gao, Pengyang; Yue, Bin; Shen, Hao; Fu, Zuoli; Zheng, Zhiqi; Zhu, Ruixiang; Huang, Yuxiang
Source:
Computers and electronics in agriculture 2019 v.162 pp. 523-530
ISSN:
0168-1699
Subject:
conservation tillage,   etc   ; disturbed soils; hardpans; models; subsoilers; topsoil; water conservation;     Show all 7 Subjects
Abstract:
... Optimisation of wing installation parameters of a subsoiler is essential for disrupting hardpans, avoiding excessive disturbance of top soil and improving soil loosening efficiency in conservation tillage. In this study, three key wing installation parameters (the upward angle φ, the mounting height h and the mounting angle β) were optimised using the discrete element method (DEM). Two objectives ...
DOI:
10.1016/j.compag.2019.04.044

2. Simulation of straw movement by discrete element modelling of straw-sweep-soil interaction

Author:
Zeng, Zhiwei; Chen, Ying
Source:
Biosystems engineering 2019 v.180 pp. 25-35
ISSN:
1537-5110
Subject:
conservation tillage,   etc   ; kinetic energy; models; oat straw; soil;     Show all 5 Subjects
Abstract:
... Understanding residue and soil behaviour under the impact of tillage tools is critical for designing tools for conservation tillage. A soil-tool-residue interaction model was developed for a sweep and oat straw using the discrete element method. Soil, sweep, and straw were modelled using spherical particles, walls, and clumps respectively. A virtual field consisting of two layers including a soil ...
DOI:
10.1016/j.biosystemseng.2019.01.009

3. New wings on the interaction between conventional subsoiler and paraplow tines with the soil: effects on the draft and the properties of soil

Author:
Askari, Mohammad; Shahgholi, Gholamhossein; Abbaspour-Gilandeh, Yousef
Source:
Archiv für Acker- und Pflanzenbau und Bodenkunde 2019 v.65 no.1 pp. 88-100
ISSN:
1476-3567
Subject:
conservation tillage,   etc   ; clay loam soils; disturbed soils; soil aggregation; subsoilers;     Show all 5 Subjects
Abstract:
... Equipping tines with the wings increases draft and soil loosening. Wing angles affect tine performance, soil aggregation and remained residue. In this research, conventional wing with no bent plus backward and forward bent wings with bend angles of 10 and 20° were attached to both a subsoiler and paraplow tine. The rake angle of all wings was 15°. The effects of tine and wing on draft, soil distur ...
DOI:
10.1080/03650340.2018.1486030

4. Effects of slope and rainfall intensity on runoff and soil erosion from furrow diking under simulated rainfall

Author:
Liu, Yuxin; Xin, Yan; Xie, Yun; Wang, Wenting
Source:
Catena 2019
ISSN:
0341-8162
Subject:
conservation tillage,   etc   ; equations; furrows; rain; rain intensity; rainfall simulation; rill erosion; runoff; sediments; soil; soil conservation;     Show all 11 Subjects
Abstract:
... Furrow diking is a type of conservation tillage practice that is widely used throughout the world and has been proved to be effective for preventing runoff and soil loss. However, it is not easy to maintain a stable conservation effect of furrow diking in various environments. Few studies have focused on the effects of rainfall and slope on the integrity and conservation efficiency of furrow dikin ...
DOI:
10.1016/j.catena.2019.02.004

5. Performance evaluation of fluted coulters and rippled discs for vertical tillage

Author:
Zeng, Zhiwei; Chen, Ying
Source:
Soil & tillage research 2018 v.183 pp. 93-99
ISSN:
0167-1987
Subject:
conservation tillage,   etc   ; corn; cutting; disturbed soils; equipment; stubble;     Show all 6 Subjects
Abstract:
... Vertical tillage (VT) is the latest form of conservation tillage dealing with excessive residue. Information on the performance of VT equipment is lacking in literature. In this study, five VT tools were tested in a corn stubble field to compare their performance. They were two coulters with 8 flutes (C8) and 13 flutes (C13), and three rippled discs with different diameters: 457-mm (D457), 508-mm ...
DOI:
10.1016/j.still.2018.06.003

6. Development and performance evaluation of an electric-hydraulic control system for subsoiler with flexible tines

Author:
Wang, Yunxia; Jing, Huirong; Zhang, Dongxing; Cui, Tao; Zhong, Xiangjun; Yang, Li
Source:
Computers and electronics in agriculture 2018 v.151 pp. 249-257
ISSN:
0168-1699
Subject:
conservation tillage,   etc   ; compacted soils; cutting; hardpans; root growth; subsoilers; subsoiling;     Show all 7 Subjects
Abstract:
... Subsoiling is primary practice in conservation tillage fields, as it disrupts compacted soil hardpans that restrict crop root growth and water infiltration. Subsoiler with flexible tines presents effective obstacle avoidance and draft force reduction, but the undesired depths, much less than target value, are observed during tillage operation due to the considerable variation in soil resistance. T ...
DOI:
10.1016/j.compag.2018.06.027

7. Scale effects of runoff generation under reduced and conventional tillage

Author:
Langhans, Christoph; Diels, Jan; Clymans, Wim; Van den Putte, An; Govers, Gerard
Source:
Catena 2019 v.176 pp. 1-13
ISSN:
0341-8162
Subject:
conservation tillage,   etc   ; agricultural mechanization; conventional tillage; corn; models; plowing; rain intensity; rainfall simulation; reduced tillage; runoff; soil water; winter wheat;     Show all 12 Subjects
Abstract:
... Review studies indicate that conservation tillage effectively reduces runoff generation measured on large plots, but less so on smaller plots. These tillage and scale effects have never been measured in a single study for temperate mechanized agriculture. With the objective to study how runoff production changes with scale as influenced by tillage we set up rainfall-runoff plots of 5 m2, 30 m2 and ...
DOI:
10.1016/j.catena.2018.12.031

8. Effects of standing stubble on the interception of soil erosion particles

Author:
Liu, Haiyang; Hou, Zhanfeng; Chen, Zhi; Wu, Pei; Xuan, Chuanzhong; Wang, Hongbo
Source:
Land degradation & development 2019 v.30 no.3 pp. 328-336
ISSN:
1085-3278
Subject:
conservation tillage,   etc   ; agricultural land; air; leaves; quantitative analysis; row spacing; sand; soil; stubble; wheat; wind erosion; wind speed;     Show all 12 Subjects
Abstract:
... Crop residues, particularly standing stubble, can reduce soil erosion by wind in conservation tillage. To determine the optimum architecture of standing stubble for effective reduction of wind speeds near the soil surface, we quantitatively analyzed the interception effect of standing stubbles on soil erosion particles through pure wind experiments and sand‐bearing wind experiments. The relationsh ...
DOI:
10.1002/ldr.3227

9. Collaborative research on Conservation Agriculture in Bajío, Mexico: continuities and discontinuities of partnerships

Author:
Martínez-Cruz, T. E.; Almekinders, C. J. M.; Camacho-Villa, T. C.
Source:
International journal of agricultural sustainability 2019 v.17 no.3 pp. 243-256
ISSN:
1747-762X
Subject:
conservation tillage,   etc   ; agricultural conservation practice; cooperative research; direct seeding; farmers; interviews; politics; research and development; researchers; sustainable agricultural intensification; technicians; Mexico;     Show all 12 Subjects
Abstract:
... Agricultural technologies are debated and contested. Studying the socio-political life of agricultural research can help us to understand why some particular technologies or pathways are favoured (and others not) and eventually why expectations are maintained or not. We studied the 30-year trajectory of practices of Conservation Agriculture in the central region of Mexico. The results of our inter ...
DOI:
10.1080/14735903.2019.1625593

10. Large-scale integrated assessment of soil carbon and organic matter-related nitrogen fluxes in Saxony (Germany)

Author:
Witing, Felix; Gebel, Michael; Kurzer, Hans-Joachim; Friese, Holm; Franko, Uwe
Source:
Journal of environmental management 2019 v.237 pp. 272-280
ISSN:
0301-4797
Subject:
conservation tillage,   etc   ; agricultural management; arable soils; carbon sequestration; climate; crop production; land use; leaching; models; monitoring; organic nitrogen; soil organic carbon; spatial data; statistics; Germany;     Show all 15 Subjects
Abstract:
... Changes in land-use, agricultural management and climate affect the turnover and storage of organic carbon in soils (SOC) as well as the nitrogen mobilization from soil organic matter (SOM), with potential side effects on nitrogen availability and leaching. When addressing the requests for increased carbon storage in soil as well as for the reduction of nitrogen losses, integrated approaches on re ...
DOI:
10.1016/j.jenvman.2019.02.036

11. The effects of tillage on sheet erosion on sloping fields in the wind-water erosion crisscross region of the Chinese Loess Plateau

Author:
Zhang, Jiaqiong; Yang, Mingyi; Deng, Xinxin; Liu, Zhang; Zhang, Fengbao
Source:
Soil & tillage research 2019 v.187 pp. 235-245
ISSN:
0167-1987
Subject:
conservation tillage,   etc   ; autumn; cropland; economic productivity; erosion control; grasslands; plowing; rain; sediment deposition; sediments; sheet erosion; shrublands; soil; spring; wind; China;     Show all 16 Subjects
Abstract:
... Tillage complicates erosion on sloping fields, especially in regions of combined wind and water erosion. The wind-water erosion crisscross region of the Chinese Loess Plateau is an example of such a region wherein erosion is caused by the stimulating effects of tillage, rainfall, and wind. Sheet erosion is an important form of cropland soil erosion and is closely correlated to the productive capac ...
DOI:
10.1016/j.still.2018.12.014

12. Environmental sustainability and water productivity on conservation tillage of irrigated maize in red brown terrace soil of Bangladesh

Author:
Sayed, Abu; Sarker, Aniruddha; Kim, Jang-Eok; Rahman, Mashiur; Mahmud, Md. Golam Ambia
Source:
Journal of the Saudi Society of Agricultural Sciences 2019
ISSN:
1658-077X
Subject:
conservation tillage,   etc   ; arid zones; carbon dioxide; corn; cost effectiveness; dry season; environmental sustainability; fuels; intensive farming; irrigation; soil quality; terrace soils; toxicity; tropics; water resources; Bangladesh;     Show all 16 Subjects
Abstract:
... Conservation tillage (CA) is an option for maintaining soil health and the surrounding environment for intensive agriculture, especially on the tropical climate. A three years lengthy research experiment was performed in arid climate from 2014 to 2016 at Bangladesh Agricultural Research Institute (BARI) to evaluate the effect of conservation tillage approaches on environmental sustainability and w ...
DOI:
10.1016/j.jssas.2019.03.002

13. Stream Nitrogen and Phosphorus Loads Are Differentially Affected by Storm Events and the Difference May Be Exacerbated by Conservation Tillage

Author:
Kelly, Patrick T.; Renwick, William H.; Knoll, Lesley; Vanni, Michael J.
Source:
Environmental science & technology 2019 v.53 no.10 pp. 5613-5621
ISSN:
1520-5851
Subject:
conservation tillage,   etc   ; agricultural watersheds; base flow; data collection; dissolved phosphorus; nitrogen; phosphorus; pollution load; storms; streams; surface water; topsoil; water quality;     Show all 13 Subjects
Abstract:
... Storm events disproportionately mobilize dissolved phosphorus (P) compared to nitrogen (N), contributing to reduction in load N:P. In agricultural watersheds, conservation tillage may lead to even further declines in load N:P due to dissolved P accumulation in the top soil layers. Due to an increase in this management activity, we were interested in the impacts of conservation tillage on N and P l ...
DOI:
10.1021/acs.est.8b05152

14. Effects of tillage on CO2 fluxes in a typical karst calcareous soil

Author:
Xiao, Dan; Ye, Yingying; Xiao, Shuangshuang; Zhang, Wei; He, Xunyang; Wang, Kelin
Source:
Geoderma 2019 v.337 pp. 191-201
ISSN:
0016-7061
Subject:
conservation tillage,   etc   ; aggregate stability; autumn; calcareous soils; carbon dioxide; climate; disturbed soils; karsts; microbial biomass; microbial carbon; seasonal variation; soil organic carbon; spring; structural equation modeling; summer; winter;     Show all 16 Subjects
Abstract:
... It is widely believed that soil disturbance by tillage was the primary cause of historical soil organic carbon (SOC) loss and high carbon dioxide (CO2) emission levels in the calcareous karst region. Nevertheless, the mechanisms underlying CO2 fluxes resulting from the soil property changes caused by tillage are poorly understood. A one-year simulation experiment using different tillage frequencie ...
DOI:
10.1016/j.geoderma.2018.09.024

15. Droplet-Size Effects on Control of Chloris spp. with Six POST Herbicides

Author:
Ferguson, J. Connor; Chauhan, Bhagirath S.; Chechetto, Rodolfo G.; Hewitt, Andrew J.; Adkins, Steve W.; Kruger, Greg R.; O'Donnell, Chris C.
Source:
Weed technology 2019 v.33 no.1 pp. 153-158
ISSN:
1550-2740
Subject:
conservation tillage,   etc   ; Chloris gayana; Chloris truncata; annuals; bromine; crops; droplet size; glyphosate; imazamox; imazapyr; paraquat; perennials; spray drift; summer; warm season grasses; weed control; weeds; winter; Queensland;     Show all 19 Subjects
Abstract:
... Chloris spp. are warm-season grasses that outcompete crops for scarce resources throughout Australia. In Queensland, mild winters and increased adoption of conservation tillage practices have led to an increase of this warm-season grass family in winter crops. The objective of this study is to understand whether droplet size (nozzle type) effects herbicide efficacy of summer perennial grasses, as ...
DOI:
10.1017/wet.2018.99

16. Energy use and economic analysis for wheat production by conservation tillage along with sprinkler irrigation

Author:
Nasseri, Abolfazl
Source:
The Science of the total environment 2019 v.648 pp. 450-459
ISSN:
0048-9697
Subject:
conservation tillage,   etc   ; conventional tillage; cost benefit analysis; crop production; energy; nitrogen fertilizers; profitability; seeds; semiarid zones; specific energy; sprinkler irrigation; surface irrigation; sustainable agriculture; Iran;     Show all 14 Subjects
Abstract:
... This study was conducted to investigate the combination of both sprinkler irrigation and conservation tillage in sustainable agriculture for wheat production. To exploit the advantages of the two systems, conventional tillage along with surface irrigation (T1) and conservation tillage along with sprinkler irrigation (T2) were compared based on energy indices and economic analysis. The study was ca ...
DOI:
10.1016/j.scitotenv.2018.08.170

17. Comparison of the sustainability of bean production systems based on emergy and economic analyses

Author:
Asgharipour, Mohammad Reza; Shahgholi, Hasan; Campbell, Daniel E.; Khamari, Issa; Ghadiri, Adel
Source:
Environmental monitoring and assessment 2019 v.191 no.1 pp. 2
ISSN:
0167-6369
Subject:
conservation tillage,   etc   ; beans; crop production; decision making; economic analysis; economic evaluation; ecosystems; emergy; environmental performance; fossils; mineral fertilizers; organic fertilizers; production technology; risk; Iran;     Show all 15 Subjects
Abstract:
... To address increasing demand, bean producers have intensified agricultural activities by increasing application of industrial inputs. Such intensification can impose environmental risks to vulnerable ecosystems. Emergy and economic analyses were utilized in this study to investigate and compare the environmental performance of five management patterns specified by differing degrees of intensificat ...
DOI:
10.1007/s10661-018-7123-3

18. Renters, landlords, and farmland stewardship

Author:
Deaton, B. James; Lawley, Chad; Nadella, Karthik
Source:
Agricultural economics 2018 v.49 no.4 pp. 521-531
ISSN:
0169-5150
Subject:
conservation tillage,   etc   ; agricultural land; conservation practices; cover crops; data collection; farmers; leasing; ownership; regression analysis; Ontario;     Show all 10 Subjects
Abstract:
... Are farmers better stewards of the land they own than the land they rent from others? We answer this question using a data set that identifies Ontario farmers’ conservation practices on their own land as well as the land they rent. Using a fixed‐effects regression approach, we find that the role of tenure varies for different types of conservation practices. Farmers were found to be just as likely ...
DOI:
10.1111/agec.12433

19. Soil erosion by water in Northern Germany: long-term monitoring results from Lower Saxony

Author:
Steinhoff-Knopp, Bastian; Burkhard, Benjamin
Source:
Catena 2018 v.165 pp. 299-309
ISSN:
0341-8162
Subject:
conservation tillage,   etc   ; catch crops; cropland; farmers; landscapes; monitoring; potatoes; risk; surveys; water erosion; wheel tracks; Germany;     Show all 12 Subjects
Abstract:
... Soil erosion caused by water has been monitored for 17 years on 465 ha cropland in Lower Saxony (Northern Germany). The 86 monitored fields are representative for three different typical agricultural landscapes with an intermediate to high water erosion risk in Northern Germany. The monitoring scheme included regularly conducted erosion damage mapping and cultivation surveys. The collected data en ...
DOI:
10.1016/j.catena.2018.02.017

20. Planter Closing Wheel Effects on Cotton Emergence in a Conservation Tillage System

Author:
Way, Thomas R.; Kornecki, Ted S.; Tewolde, Haile
Source:
Applied engineering in agriculture 2018 v.34 no.1 pp. 177-186
ISSN:
0883-8542
Subject:
conservation tillage,   etc   ; clay soils; cotton; cover crops; planters; planting; rowcrops; rye; sandy loam soils; wheels;     Show all 10 Subjects
Abstract:
... Closing wheels on a row crop planter help provide good seed-soil contact during planting and can influence emergence and crop stand. Various types of closing wheels are available to producers for use on planters. Seven closing wheel types were used on a row crop planter planting cotton in a conservation tillage system during a three-year study on a sandy loam soil and a clay soil. Cotton was plant ...
DOI:
10.13031/aea.12256