Conservation tillage in UK arable cropping systems: Tivington [United Kingdom]
- Creation:
- Update:
- Compiler: Ceris A. Jones
- Editor: –
- Reviewer: Deborah Niggli
non-inversion tillage (eng); minimum tillage (eng), conservation agriculture (eng)
technologies_983 - United Kingdom
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Expand all Collapse all1. General information
1.2 Contact details of resource persons and institutions involved in the assessment and documentation of the Technology
SLM specialist:
Oborn Jo
jeoborn@somerset.gov.uk
Farming wildlife advisory group
FWAG, E,T&E Dept., County Hall, Taunton TA1 4DY, UK
United Kingdom
Name of project which facilitated the documentation/ evaluation of the Technology (if relevant)
Soil and water protection (EU-SOWAP)Name of the institution(s) which facilitated the documentation/ evaluation of the Technology (if relevant)
Farmin & wildlife advisory group (FWAG) - United Kingdom1.3 Conditions regarding the use of data documented through WOCAT
When were the data compiled (in the field)?
21/02/2005
The compiler and key resource person(s) accept the conditions regarding the use of data documented through WOCAT:
Yes
1.4 Declaration on sustainability of the described Technology
Is the Technology described here problematic with regard to land degradation, so that it cannot be declared a sustainable land management technology?
No
1.5 Reference to Questionnaire(s) on SLM Approaches
Participatory on-farm resarch and demonstration in UK arable … [United Kingdom]
To find and demonstrate ways of better managing the land.
- Compiler: Ceris A. Jones
2. Description of the SLM Technology
2.1 Short description of the Technology
Definition of the Technology:
Surface cultivation of up to the top 10cm of soil but not complete inversion
2.2 Detailed description of the Technology
Description:
Machinery with discs or tines replace the plough for minimal cultivations of the soil. Equally crops may be established by no-tillage/ zero-tillage.
Purpose of the Technology: (i) soil protection (ii) improved crop establishment particularly through the speeding up of of operations.
Establishment / maintenance activities and inputs: appropriate machinery, soil condition and following crop all determine establishment. Maintenance: on an annual basis.
Natural / human environment: SOWAP (ww.sowap.org) project working with farmer to protect environment and maintain economic viability
2.3 Photos of the Technology
2.5 Country/ region/ locations where the Technology has been applied and which are covered by this assessment
Country:
United Kingdom
Region/ State/ Province:
Somerset
Further specification of location:
Minehead
Map
×2.7 Introduction of the Technology
Specify how the Technology was introduced:
- through projects/ external interventions
Comments (type of project, etc.):
From the USA where in the 1930's the 'dust-bowls' necessitated the development of soil conservation in intensive agriculture.
3. Classification of the SLM Technology
3.1 Main purpose(s) of the Technology
- improve production
- reduce, prevent, restore land degradation
3.2 Current land use type(s) where the Technology is applied
Cropland
- Annual cropping
Main crops (cash and food crops):
Major cash crop: Wheat, oilseed rape
Comments:
Major land use problems (compiler’s opinion): Soil erosion and compaction caused by inappropriate land use and intensive grazing respectively
Major land use problems (land users’ perception): Soil erosion and capping of the soil
Type of cropping system and major crops comments: winter wheat - winter oilseed rape - winter wheat - beans - winter wheat
3.3 Further information about land use
Water supply for the land on which the Technology is applied:
- rainfed
Number of growing seasons per year:
- 1
Specify:
Longest growing period in days: 300, Longest growing period from month to month: Sep - Jul
3.4 SLM group to which the Technology belongs
- minimal soil disturbance
3.5 Spread of the Technology
Comments:
Total area covered by the SLM Technology is 0.007 m2.
Farm is a total of 126ha of which 28ha are grazed, 9ha are under environmental stewardship and 7ha are set aside. The total SWC technology area represents a project demonstration plot.
3.6 SLM measures comprising the Technology
agronomic measures
- A1: Vegetation/ soil cover
- A3: Soil surface treatment
Comments:
Type of agronomic measures: early planting, mulching, mineral (inorganic) fertilizers, minimum tillage, breaking compacted subsoil
3.7 Main types of land degradation addressed by the Technology
soil erosion by water
- Wt: loss of topsoil/ surface erosion
- Wo: offsite degradation effects
physical soil deterioration
- Pk: slaking and crusting
Comments:
Main causes of degradation: other human induced causes (specify) (agricultural causes: focus on yields), labour availability (too much labour: attempting to maintain rural employment)
Secondary causes of degradation: education, access to knowledge and support services (lack of knowledge), insufficient time for farmers to consider the issu
3.8 Prevention, reduction, or restoration of land degradation
Specify the goal of the Technology with regard to land degradation:
- reduce land degradation
4. Technical specifications, implementation activities, inputs, and costs
4.2 Technical specifications/ explanations of technical drawing
Technical knowledge required for field staff / advisors: moderate
Technical knowledge required for land users: moderate
Main technical functions: improvement of soil structure
Secondary technical functions: control of raindrop splash, control of dispersed runoff: retain / trap, improvement of ground cover, increase in organic matter, increase in soil fertility
Early planting
Material/ species: crop
Quantity/ density: depends on
Remarks: residue chopped + spread over width of combine
Mulching
Material/ species: crop residue
Quantity/ density: up to 5t/h
Mineral (inorganic) fertilizers
Material/ species: N,P,K, trace elements
Remarks: broadcast
Breaking compacted subsoil
Remarks: when required
4.3 General information regarding the calculation of inputs and costs
other/ national currency (specify):
£
Indicate exchange rate from USD to local currency (if relevant): 1 USD =:
0.56
4.6 Maintenance/ recurrent activities
Activity | Type of measure | Timing/ frequency | |
---|---|---|---|
1. | Year1: light cultivation with discs | Agronomic | 3rd-4th week in August / per crop |
2. | Year1: spray with non-selective herbicide (glyphosate) | Agronomic | late August/ early September / per crop |
3. | Year1: drill | Agronomic | late August/ early September, 3-4 days after spraying / per crop |
4. | Year1: roll (optional) | Agronomic | after drilling / per crop |
Comments:
Additional info: - Year2: drill: mid September / per crop - Year2: roll: mid September / per crop - Year3: shallow sub-soil: November / per crop - Year3: drill: November / per crop
4.7 Costs and inputs needed for maintenance/ recurrent activities (per year)
Specify input | Unit | Quantity | Costs per Unit | Total costs per input | % of costs borne by land users | |
---|---|---|---|---|---|---|
Equipment | Equipment (year1) machine hour | ha | 1.0 | 148.0 | 148.0 | 100.0 |
Equipment | Equipment (year2) machine hour | ha | 1.0 | 166.0 | 166.0 | 100.0 |
Equipment | Equipment (year3) machine hour | ha | 1.0 | 113.0 | 113.0 | 100.0 |
Total costs for maintenance of the Technology | 427.0 |
Comments:
Machinery/ tools: Vaderstad Carrier, Vaderstad drill and roller
Only crop establishment costs are included as all other costs - seed, fertilisers, pesticides - are equivalent with those for conventionally mouldboard ploughing. The costs highlghted include labour. Equivalent crop establishment costs by ploughing are 225 (year1), 231 (year2), 190 (year3)
4.8 Most important factors affecting the costs
Describe the most determinate factors affecting the costs:
slope (steeper slopes require more horsepower), state of the soil, climate, crop
5. Natural and human environment
5.1 Climate
Annual rainfall
- < 250 mm
- 251-500 mm
- 501-750 mm
- 751-1,000 mm
- 1,001-1,500 mm
- 1,501-2,000 mm
- 2,001-3,000 mm
- 3,001-4,000 mm
- > 4,000 mm
Specify average annual rainfall (if known), in mm:
800.00
Agro-climatic zone
- sub-humid
5.2 Topography
Slopes on average:
- flat (0-2%)
- gentle (3-5%)
- moderate (6-10%)
- rolling (11-15%)
- hilly (16-30%)
- steep (31-60%)
- very steep (>60%)
Landforms:
- plateau/plains
- ridges
- mountain slopes
- hill slopes
- footslopes
- valley floors
Altitudinal zone:
- 0-100 m a.s.l.
- 101-500 m a.s.l.
- 501-1,000 m a.s.l.
- 1,001-1,500 m a.s.l.
- 1,501-2,000 m a.s.l.
- 2,001-2,500 m a.s.l.
- 2,501-3,000 m a.s.l.
- 3,001-4,000 m a.s.l.
- > 4,000 m a.s.l.
5.3 Soils
Soil depth on average:
- very shallow (0-20 cm)
- shallow (21-50 cm)
- moderately deep (51-80 cm)
- deep (81-120 cm)
- very deep (> 120 cm)
Soil texture (topsoil):
- medium (loamy, silty)
Topsoil organic matter:
- medium (1-3%)
If available, attach full soil description or specify the available information, e.g. soil type, soil PH/ acidity, Cation Exchange Capacity, nitrogen, salinity etc.
Soil fertility is medium
5.6 Characteristics of land users applying the Technology
Market orientation of production system:
- commercial/ market
Off-farm income:
- > 50% of all income
Relative level of wealth:
- rich
Level of mechanization:
- mechanized/ motorized
Indicate other relevant characteristics of the land users:
Population density: 10-50 persons/km2
Annual population growth: < 0.5%
5% of the land users are very rich and own 20% of the land.
10% of the land users are rich and own 20% of the land.
85% of the land users are average wealthy and own 60% of the land.
Off-farm income specification: Contracting work forms greater part of income
5.7 Average area of land owned or leased by land users applying the Technology
- < 0.5 ha
- 0.5-1 ha
- 1-2 ha
- 2-5 ha
- 5-15 ha
- 15-50 ha
- 50-100 ha
- 100-500 ha
- 500-1,000 ha
- 1,000-10,000 ha
- > 10,000 ha
Comments:
126ha
5.8 Land ownership, land use rights, and water use rights
- Other
Land use rights:
- leased
6. Impacts and concluding statements
6.1 On-site impacts the Technology has shown
Socio-economic impacts
Production
crop production
Comments/ specify:
perhaps most significant in early years
land management
Income and costs
expenses on agricultural inputs
Comments/ specify:
Possible increasing herbicide costs
farm income
workload
Comments/ specify:
Timing of operations critical
Other socio-economic impacts
Preparation for new legislation
Comments/ specify:
CAP reform, Soil Action Plan for England, EU Water Framework directive
Timeliness
Comments/ specify:
operation twice as quick as ploughing
Machinery costs
Socio-cultural impacts
conflict mitigation
Acceptance by society
Comments/ specify:
Age differences: Tends to be taken up by younger farmers
Ecological impacts
Soil
soil moisture
soil cover
soil compaction
Biodiversity: vegetation, animals
animal diversity
Comments/ specify:
More earthworms compared to land that has been ploughed
pest/ disease control
Quantity before SLM:
0.01
Quantity after SLM:
0
Other ecological impacts
Soil fertility
6.2 Off-site impacts the Technology has shown
downstream siltation
6.4 Cost-benefit analysis
How do the benefits compare with the establishment costs (from land users’ perspective)?
Short-term returns:
slightly positive
Long-term returns:
positive
How do the benefits compare with the maintenance/ recurrent costs (from land users' perspective)?
Short-term returns:
neutral/ balanced
Long-term returns:
neutral/ balanced
6.5 Adoption of the Technology
Comments:
100% of land user families have adopted the Technology without any external material support
1 land user families have adopted the Technology without any external material support
There is a moderate trend towards spontaneous adoption of the Technology
Comments on adoption trend: Driven by economics
6.7 Strengths/ advantages/ opportunities of the Technology
Strengths/ advantages/ opportunities in the land user’s view |
---|
ncreased work rate making operations quicker |
Better trafficability |
Less at risk of weather |
Earlier drilling. It is a systems approach - minimum tillage combined with early drilling and low seed rates |
Strengths/ advantages/ opportunities in the compiler’s or other key resource person’s view |
---|
Increased work rate and cost effectiveness |
Improved soil organic matter |
Imrpoved water quality |
Improved soil biodiversity |
6.8 Weaknesses/ disadvantages/ risks of the Technology and ways of overcoming them
Weaknesses/ disadvantages/ risks in the land user’s view | How can they be overcome? |
---|---|
Dependent on dry weather | Co-operation with other farmers or larger acreage |
Machinery more complex and expensive | A combination of crop rotation, pesticides and stale seedbeds |
Increasing grass weed populations | Does not necessarily mean spending money eg utilising old equipment on farm like subsoilers. However, need the right attitude |
Need to be experimental | Accept advice for varying sources, talk to different people |
Advice can be fragmented/ confusing |
Weaknesses/ disadvantages/ risks in the compiler’s or other key resource person’s view | How can they be overcome? |
---|---|
Technological knowledge of farmer | Training and education, dissemination |
Initial high capital investment | Extended finance |
Possible increasing weed populations | More diverse management options - cultural and chemical |
Need to expand acreage to cover capital costs | More diverse crop rotation but perhaps this is insufficient to retain economic viability |
7. References and links
7.1 Methods/ sources of information
- field visits, field surveys
- interviews with land users
7.2 References to available publications
Title, author, year, ISBN:
FWAG (Farming and Wildlife Advisory group)
Available from where? Costs?
www.fwag.org.uk
7.3 Links to relevant information which is available online
Title/ description:
SMI
URL:
www.smi.org.uk
Title/ description:
L and D farming
URL:
www.landdfarming.co.uk
Title/ description:
Vaderstad machinery
URL:
www.vaderstad.com
Title/ description:
SOWAP project
URL:
www.sowap.org
Links and modules
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Participatory on-farm resarch and demonstration in UK arable … [United Kingdom]
To find and demonstrate ways of better managing the land.
- Compiler: Ceris A. Jones
Modules
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