Estimating spatially variable deep drainage across a central-eastern wheatbelt catchment, Western Australia

2003 ◽  
Vol 54 (8) ◽  
pp. 789 ◽  
Author(s):  
G. Pracilio ◽  
S. Asseng ◽  
S. E. Cook ◽  
G. Hodgson ◽  
M. T. F. Wong ◽  
...  
Keyword(s):  
Production Systems ◽  
Simulation Modelling ◽  
Spatial Modelling ◽  
Loamy Sand ◽  
Soil Types ◽  
Deep Drainage ◽  
Crop Simulation ◽  
Perennial Vegetation ◽  
Water Recharge ◽  
Agricultural Production Systems

The management of excess water (recharge or deep drainage) is one of many important issues required to address dryland salinity. To provide information on site-specific risk of deep drainage at a landholder scale, spatially variable deep drainage beneath an annual crop was estimated for a catchment of approximately 25 000 ha. The method coupled the results from one-dimensional crop simulation modelling (Agricultural Production Systems Simulator) with probabilistic soil mapping (Expector). Annual deep drainage over the catchment averaged 18 mm, representing 5% of rainfall. The annual deep drainage for the most probable soil types averaged 25 mm for acid loamy sand, 19 mm for yellow duplex, 14 mm for loamy sand, and 12 mm for red duplex. Groundwater modelling (Flowtube) highlighted that the groundwater table below the flat valley is not likely to be lowered with the introduction of perennial vegetation upslope. However, scenario spatial modelling indicated that replacing vegetation in areas of the most drainage-prone soil types, acid loamy sand (22% of catchment) and acid loamy sand plus yellow duplex (together at 48% of catchment area), was predicted to reduce annual average deep drainage by 38 and 60%, respectively. Mapping deep drainage by this method is of value to land managers who want to reduce deep drainage by locating priority areas for the establishment of perennial vegetation.

Modelling shows that the high rates of deep drainage in parts of the Goondoola Basin in semi-arid Queensland can be reduced with changes to the farming systems

Soil Research ◽  
2010 ◽  
Vol 48 (1) ◽  
pp. 58 ◽  
Author(s):  
J. B. Robinson ◽  
D. M. Silburn ◽  
D. Rattray ◽  
D. M. Freebairn ◽  
A. Biggs ◽  
...  
Keyword(s):  
Water Balance ◽  
Good Condition ◽  
Shallow Groundwater ◽  
Farming Systems ◽  
Field Measurements ◽  
Simulation Modelling ◽  
Soil Types ◽  
Native Vegetation ◽  
Deep Drainage ◽  
Deep Roots

Clearing native vegetation and introducing crops and pastures may increase deep drainage and result in dryland salinity. In south-west Queensland, native vegetation of the Goondoola Basin has been substantially cleared for cropping and pastoral activities, resulting in shallow groundwater and localised salinity. Simulation modelling was used to estimate the water balance of a range of vegetation and soil types. Six soils were studied, with plant-available water capacity (PAWC) of 71 mm (a Kandosol) to 198 mm (a Vertosol) for 1200 mm depth. Vegetation types were annual wheat, opportunity cropping, and perennial pastures in poor and good condition, and high quality perennial pasture with deep roots growing on deep (2400 mm) variants of the 6 soil types. Opportunity cropping did not reduce deep drainage. Substantial differences were found in long-term average deep drainage (mm/year) between wheat crops and pastures for all soil types. The differences in deep drainage between wheat cropping and pasture in good condition were greatest for the 2 Kandosols, which had the lowest PAWC (34 and 21 mm/year less deep drainage, reductions of 53% and 62%, respectively), and a Vertosol with intermediate PAWC (23 mm/year less deep drainage). A Chromosol and a Dermosol with intermediate PAWC had smaller reductions in deep drainage (14 and 11 mm/year, respectively). In the case of a Vertosol with high PAWC (198 mm), deep drainage was negligible with all pastures. Due to increased infiltration and reduced soil evaporation, more deep drainage was simulated with pasture in good condition than pastures in poor condition, especially for 2 Kandosols. Pasture with deep roots (2400 mm) growing on deep variants (2400 mm) of the 6 soils had lower rates of deep drainage than the other pastures. Simulated deep drainage and other components of the water balance were in good agreement with field measurements and expectations. These results indicate that large reductions in deep drainage can be achieved in the Goondoola Basin by replacing cropping with pastoral activities. Kandosol soils used for wheat cropping should be the primary target for land use change.

Prospects for the development of agrarian production systems in in the Right Bank Polesie of Ukraine

2018 ◽  
Vol 2 (95) ◽  
pp. 69-72
Author(s):  
Yu.A. Tarariko ◽  
L.V. Datsko ◽  
M.O. Datsko
Keyword(s):  
Agricultural Production ◽  
Production Systems ◽  
Economic Feasibility ◽  
Capital Investments ◽  
Resource Potential ◽  
Grain Processing ◽  
Processing And Storage ◽  
The Right ◽  
And Storage ◽  
Agricultural Production Systems

The aim of the work is to assess the existing and prospective models for the development of agricultural production in Central Polesie on the basis of economic feasibility and ecological balance. The evaluation of promising agricultural production systems was carried out with the help of simulation modeling of various infrastructure options at the levels of crop and multisectoral specialization of agroecosystems. The agro-resource potential of Central Polesie is better implemented in the rotation with lupine, corn and flax dolguntsem with well-developed infrastructure, including crop, livestock units, grain processing and storage systems, feed, finished products and waste processing in the bioenergetic station. The expected income for the formation of such an infrastructure is almost 8 thousand dollars. / with a payback period of capital investments of 2-3 years.

Designing sustainable agricultural production systems for a changing world: Methods and applications

2014 ◽  
Vol 126 ◽  
pp. 1-2 ◽  
Author(s):  
S. Dogliotti ◽  
D. Rodríguez ◽  
S. López-Ridaura ◽  
P. Tittonell ◽  
W.A.H. Rossing
Keyword(s):  
Agricultural Production ◽  
Production Systems ◽  
Agricultural Production Systems ◽  
Changing World

scholarly journals Rethinking rehabilitation of salt-affected land: new perspectives from Australian experience

2021 ◽  
Author(s):  
John Leake ◽  
Victor Squires ◽  
S Shabala
Keyword(s):  
Ecosystem Services ◽  
Agricultural Production ◽  
Production Systems ◽  
Concerted Effort ◽  
Plant Soil ◽  
Mechanistic Basis ◽  
Australian Experience ◽  
Evolution Of Ideas ◽  
The Cost ◽  
Agricultural Production Systems

Soil salinity is emerging as a major threat to the sustainability of modern agricultural production systems and, historically, land and water degradation due to salinity has defeated civilisations whenever the cost of remediation exceeded the benefits. This work discusses the complexity inherent in working with salinity, and the opportunities where salt damaged land and water is viewed as a resource. It takes a wider look at land and waterscapes, seeing them as systems that link damage and repair across time and space to bridge the divide between the main beneficiaries of ecosystem services and the main actors, farmers, and land managers. We first discuss the mechanistic basis of crop reduction by salinity and evolution of ideas about how to shape the plant-soil-water nexus. We then discuss the needs of farmers and other land users required for adequate planning and land management within the constraints of existing policy. Lastly, an approach that provides a new technical and economic tool for the remediation of land in several land use categories is presented. We conclude that a more concerted effort is required to turn payments for ecosystem services into a true market, accepted as such by the land managers, whose agency is essential so the ‘knowledge of what can be done can be transformed into benefits’. Achieving this will require a transformation in the paradigm of how natural resources are managed.

scholarly journals Chemical and physical attributes of an Ultisol under sustainable agricultural production systems

2019 ◽  
Vol 14 (4) ◽  
pp. 1-8
Author(s):  
W.L.B. Borges ◽  
I.M.D. Souza ◽  
M.V.M. Sarto ◽  
J.C. Calonego ◽  
R.S. Freitas ◽  
...  
Keyword(s):  
Agricultural Production ◽  
Production Systems ◽  
Physical Attributes ◽  
Agricultural Production Systems
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