Optimized soil inversion in the headlands with a novel section‐controlled mouldboard ploughing system

2020 ◽  
Vol 36 (3) ◽  
pp. 470-481
Author(s):  
Søren Kirkegaard Nielsen ◽  
Hans Christian Carstensen ◽  
Lars J. Munkholm ◽  
Michael Nørremark ◽  
Jesper Rasmussen ◽  
...  
Keyword(s):  
Novel Section ◽  
Soil Inversion

scholarly journals Crop residue displacement by soil inversion: Annelid responses and their impact on carbon and nitrogen dynamics in a lab-based mesocosm study

2021 ◽  
Vol 167 ◽  
pp. 104151
Author(s):  
Ilka Engell ◽  
Deborah Linsler ◽  
Stefan Schrader ◽  
Astrid Taylor ◽  
Bernard Ludwig ◽  
...  
Keyword(s):  
Crop Residue ◽  
Nitrogen Dynamics ◽  
Carbon And Nitrogen ◽  
Carbon And Nitrogen Dynamics ◽  
Soil Inversion

Oxford Textbook of Interventional Cardiology

2018 ◽  
Keyword(s):  
Interventional Cardiology ◽  
Coronary Intervention ◽  
Western Society ◽  
Evidence Based ◽  
New Techniques ◽  
Novel Section ◽  
Percutaneous Coronary ◽  
Expert Team ◽  
Artery Disease ◽  
Evidence Based Guidelines

The Oxford Textbook of Interventional Cardiology is the definitive text, spanning the whole spectrum of interventional cardiology procedures, including management of patients with coronary artery disease, one of the leading killers in western society. This textbook, covering key procedures and fully revised and updated to include the latest trials, technology, and new techniques, is essential reading. The Oxford Textbook of Interventional Cardiology 2nd edition spans the whole spectrum of interventional cardiology procedures, including a novel section on the future of interventional cardiology, and multiple new chapters covering special devices in percutaneous coronary intervention. Written by an expert team of international authors, this book offers guidance on all aspects of interventional cardiology according to the European curriculum, and covers the evidence-based guidelines for a comprehensive view of the field.

Germination ecology of dwarf amaranth (Amaranthus macrocarpus): an emerging weed in Australian cotton cropping systems

Weed Science ◽  
2020 ◽  
Vol 68 (6) ◽  
pp. 612-618
Author(s):  
Md Asaduzzaman ◽  
Eric Koetz ◽  
Hanwen Wu
Keyword(s):  
Weed Management ◽  
Cropping Systems ◽  
Integrated Weed Management ◽  
Soil Conditions ◽  
Alkaline Soil ◽  
Bare Ground ◽  
Night Temperature ◽  
Germination Ecology ◽  
Two Populations ◽  
Soil Inversion

AbstractDwarf amaranth (Amaranthus macrocarpus Benth.) is a problematic broadleaf weed in many crops in Australia; however, no information is available on the germination ecology of this species. Seeds from two populations of this species were collected from Hillston, NSW, Australia (D-P-01), and Yandilla, QLD, Australia (D-P-02). Seeds were germinated at a range of constant (20 to 45 C) and alternating temperatures (30/20, 35/25, 40/30, and 45/35 C day/night). For the constant temperature treatments, the highest germination occurred at 35 C for D-P-01 (89%) and D-P-02 (82%). Germination was higher at the alternating day/night temperature of 40/30 C for both populations D-P-01 (91%) and D-P-02 (85%). Seed germination of both populations was stimulated by light, which indicates a great amount of emergence of A. macrocarpus can occur on bare ground such as crop seed beds. Results also revealed that this species tolerates a moderate level of salinity and can germinate in slightly alkaline soil conditions. The emergence of this species was highest (47%) for the seed buried at 0.5-cm depth in grey cracking alkaline soil compared with seed buried at the same depth in acidic red soils. These results suggest that soil inversion by tillage to bury weed seeds below their maximum emergence depth could serve as an important tool for managing A. macrocarpus. The results from this study will help in developing more sustainable and effective integrated weed management tactics for the control of this weed and weeds with similar responses in summer cropping systems.

Developing A Soil Inversion Model Framework for Regional Permafrost Monitoring

2019 ◽  
Author(s):  
Yonghong Yi ◽  
Richard H. Chen ◽  
Dmitry Nicolsky ◽  
Mahta Moghaddam ◽  
John S. Kimball ◽  
...  
Keyword(s):  
Model Framework ◽  
Inversion Model ◽  
Soil Inversion

scholarly journals Novel Section-Based Joint Network Coding and Scheduling Scheme in WMNs: JNCS

ETRI Journal ◽  
2015 ◽  
Vol 37 (2) ◽  
pp. 380-386 ◽  
Author(s):  
Jae Ryong Cha ◽  
Gwang Hun Back
Keyword(s):  
Network Coding ◽  
Scheduling Scheme ◽  
Novel Section

scholarly journals Soil Properties after Eight Years of the Use of Strip-Till One-Pass Technology

Agronomy ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1596
Author(s):  
Iwona Jaskulska ◽  
Kestutis Romaneckas ◽  
Dariusz Jaskulski ◽  
Lech Gałęzewski ◽  
Barbara Breza-Boruta ◽  
...  
Keyword(s):  
Field Experiment ◽  
Soil Properties ◽  
Sandy Loam ◽  
Conventional Tillage ◽  
Available Phosphorus ◽  
Simultaneous Application ◽  
Cellulolytic Microorganisms ◽  
Loam Soil ◽  
Winter Rapeseed ◽  
Soil Inversion

Tillage is an agrotechnical practice that strongly affects the soil environment. Its effect on soil properties depends on the system and, more specifically, on the degree of soil inversion and loosening. Strip-till is a non-inversive method that loosens only narrow soil strips. In strip-till one-pass (ST-OP) technology, tillage is combined with a simultaneous application of fertilizers and seed sowing. In a static multi-year field experiment, the soil properties after application of ST-OP for 8 years were compared to those of soil under conventional tillage with the use of a moldboard plough to a depth of 20 cm (CT), and equally deep loosened and mixed reduced tillage (RT). A field experiment of these three treatments was performed since 2012 in sandy loam soil, Luvisol. A total of 44 features were examined that described the physical, chemical, biological, and biochemical soil properties in the 0–20 cm layer, and penetration resistance (PR), bulk density (BD), and soil moisture (SM) in the 25–30 cm layer. The influence of the ST-OP technology on the yield of crops was also determined. Multivariate analysis shows that the ST-OP method, in terms of affecting the soil properties, differs considerably from RT and CT treatments. The soil after the ST-OP method contained two- to four-fold more earthworms (En), with a mass (Em) 2- to 5-fold higher, than those in the soil following RT and CT, respectively. In the ST-OP soil the content of available phosphorus (Pa) and available potassium (Ka); the total count of bacteria (Bt), cellulolytic microorganisms (Bc), and fungi (Ff); and the activity of phosphatases (AlP, AcP) were significantly higher. Compared with CT, the content of total organic carbon (Ct) and its content in the fractions of organic matter were also higher, with the exception of humins (CH). The yields of winter rapeseed and winter wheat using the ST-OP technology were marginally higher compared with those using the CT and RT technology.

XIII The Victorian Period

2019 ◽  
Vol 98 (1) ◽  
pp. 702-857
Author(s):  
Ana Alicia Garza ◽  
Lois Burke ◽  
Christian Dickinson ◽  
Helen Williams ◽  
Lucy Barnes ◽  
...  
Keyword(s):  
George Eliot ◽  
Wilkie Collins ◽  
Anthony Trollope ◽  
George Gissing ◽  
The Novel ◽  
Publishing History ◽  
Samuel Butler ◽  
Novel Section ◽  
Victorian Period

Abstract This chapter has six sections: 1. General and Prose; 2. The Novel; 3. Poetry; 4. Periodicals and Publishing History; 5. Drama; 6. Miscellaneous and Cross-Genre. Section 1 is by Ana Alicia Garza; section 2 is by Lois Burke with assistance from Christian Dickinson, who writes on Dickens; section 3 is by Ana Alicia Garza; section 4 is by Helen Williams; section 5 is by Lucy Barnes; section 6 is by William Baker. Thanks for assistance with this chapter must go to Dominic Edwards, Steven Amarnick, Richard Bleiler, Nancy S. Weyant, the bibliographer of Mrs Gaskell, and Patrick Scott. In a departure from previous years, and in order to avoid confusion as to who has contributed what to this chapter, George Borrow, Thomas and Jane Welsh Carlyle, and Richard Jefferies, previously found in the General and Prose section, and the Brontës, Samuel Butler, Wilkie Collins, George Eliot, George Henry Lewes, George Gissing, and Anthony Trollope, previously found in the Novel section, will be found in section 6, Miscellaneous and Cross-Genre, as will materials that came in too late to be included in other sections.

Evidence for soil carbon enhancement through deeper mouldboard ploughing at pasture renovation on a Typic Fragiaqualf

Soil Research ◽  
2018 ◽  
Vol 56 (2) ◽  
pp. 182 ◽  
Author(s):  
R. Calvelo Pereira ◽  
M. J. Hedley ◽  
M. Camps Arbestain ◽  
P. Bishop ◽  
K. E. Enongene ◽  
...  
Keyword(s):  
Grazing Intensity ◽  
Soil Mass ◽  
Short Term ◽  
Soil C ◽  
C Storage ◽  
Permanent Pasture ◽  
C Stocks ◽  
Productive Potential ◽  
Different Depths ◽  
Soil Inversion

Permanent pastures require periodic renewal (cultivation and resowing) to maintain their productive potential, which involves a short-term carbon (C) loss. Normal cultivation (ploughing or discing) often involves only the top 10–15 cm, or less, of pasture soils. A regrassing field trial with ryegrass plus white clover swards was established in 2011 to assess the effect of deeper ploughing (25 cm) on C storage in an imperfectly drained soil (Tokomaru silt loam). The site was core sampled (0–30 cm depth) 2 and 4 years (i.e. in 2013 and 2015 respectively) after cultivation and regrassing (soil inversion treatment) to assess changes in soil C content at different depths. At both times, an adjacent uncultivated ryegrass paddock (undisturbed pasture treatment) under similar grazing intensity was also sampled and C stocks were compared. Profiles of cultivated soils (soil inversion) showed higher (P < 0.01) C stocks than the adjacent permanent pasture at the nominal 15–25 and 25–30 cm depths and significantly lower (P < 0.01) C stocks in the topsoil (nominal 0–5 cm depth) for both years sampled (2013, 2015). These findings imply that the differences (inversion – pasture) were consistent 4 years after cultivation and deep ploughing at pasture renewal had resulted in an overall increase in soil C mass to approximately 30 cm of ~18% (13.9 Mg C ha–1; equivalent soil mass 3701 Mg soil ha–1) compared with not undertaking the regrassing. This gain in soil C may be temporary, but in a period of 4 years it has significantly increased the net residence time of C in soil related to soil inversion.

Plough section control for optimised uniformity in primary tillage

2017 ◽  
Vol 8 (2) ◽  
pp. 444-449 ◽  
Author(s):  
S.K. Nielsen ◽  
L.J. Munkholm ◽  
M.H. Aarestrup ◽  
M.H. Kristensen ◽  
O. Green
Keyword(s):  
Pest Control ◽  
Visual Inspection ◽  
Real Field ◽  
Hydraulic Control ◽  
Interface Area ◽  
Crop Establishment ◽  
Primary Tillage ◽  
Mouldboard Plough ◽  
Control Designs ◽  
Soil Inversion

Primary tillage is in many cases crucial for successful crop establishment and weed and pest control. Inversion tillage using a mouldboard plough may be required when a uniform ploughing operation covering the entire field is preferred. The ploughing operation is especially challenging at the interface area between headlands and the main cropping area. Overlapping at the interface causes a mixing of the topsoil, rather than a soil inversion, and poor burial of residues and weeds, especially of concern in organic farming. The aim of the research was to study novel plough section control designs to optimise the interface area. Concept designs with hydraulic control were studied and the preferred was developed and tested in real field operations. The research concluded that the concept was functional and by visual inspection the interface was optimised. In addition, the section control can improve operations in irregularly shaped fields.

Sign in / Sign up

Export Citation Format

Share Document