Managing Water on Your Farm - Presented by Mark Shepard
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Transcript of Managing Water on Your Farm - Presented by Mark Shepard
WATER! the #1 plant nutrient
Keyline Design and the Restoration Agriculture Water Management System
Restoration Agriculture Development Inc: Radpioneers.com
On facebook:Restoration AgricultureDevelopment
Forest Agriculture Enterprises LLC: Forestag.com
Water For Every FarmP A Yeomans p2
Water For Every FarmP A Yeomans p2
Yeomans p 2
• I. DefinitionUsing ridges and furrows formed by tillage, planting and other farming operations to change the direction of runoff from directly downslope to around the hillslope (perpendicular to the field slope).
• II. PurposesThis practice may be applied as part of a conservation management system to achieve one or more of the following:To reduce sheet and rill erosion. To reduce transport of sediment, other solids,and the contaminants attached to them. To increase water infiltration.
• www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs143_026017.pdf
CONTOUR FARMING(Acre) Code 330 Natural Resources Conservation Service Conservation Practice Standard
Yeomans p 39
(bonde msingi)
(Safu ya milima msingi)
(keypoint)
Source: mas humus
Source: Mas humus
Photo source: Darren Doherty
Photo source: Darren Doherty
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Some factors influencing Keyline/ water management design:
-Slope
-Soil Type
-Soil permeability
-Intended use
-equipmentDepth, type and structure of bedrock
Photo source: Darren Doherty
Photo source: Darren Doherty
Photo source: Darren Doherty
Photo source: Darren Doherty
Photo source: Darren Doherty
Photo source: Darren Doherty
Photo source: Darren Doherty
permaculturenews.org/resources_files/KeylineArticle.pdf
Every property has a “Sweet Spot”…..
…the line where the most of that property’s water can be managed with the least amount of earthworks.
Photo source: Darren Doherty
Photo source: Darren Doherty
TERRACE(Feet) Code 600 Natural Resources Conservation Service Conservation Practice Standard
l. Definition An earth embankment, or a combination ridge and channel, constructed across the field slope.
II. Purpose This practice is applied as part of a resource management system for one or more of the following purposes:.-Reduce soil erosion by reducing slope length. -Reduce sediment content in runoff water. -Retain runoff for moisture conservation. -Improve farmability.III.Conditions Where Practice Applies This practice applies where:-soil erosion by water is a problem, -there is a need to conserve water, -the soils and topography are such that terraces can be constructed and farmed with reasonable effort,-a suitable outlet can be provided, or -excess runoff is a problem.
• Catchment area X maximum rainfall event ever recorded = “safest design” swale + pond volume.
• The capacity of the swale and outlet system must be able to intercept and disperse this catastrophic event volume to avoid system failure.
• Swales in clay soils can be deeper with steeper sides.
• Swales in Sandy soils must be wider with gently sloping sides.
• Safest design volume is influenced by measured water infiltration rate, saturation point and soil type.
Source: Darren Dougherty
Source: Darren Dougherty
Source: Darren Dougherty
http://www.yeomansplow.com.au/yeomans-plows.htm
Water movement beforeKeyline Patterning & Terraces
Water movement After Keyline patterningTerraces & ponds