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Water Conservation Through Furrow Diking

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Furrow diked had 3 irrigations = 2.5 inches. Centimeters. Results - 2005 ... No adversity to furrow diking. 2006 Southeast Drought. Inches of Water Use ... – PowerPoint PPT presentation

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Title: Water Conservation Through Furrow Diking


1
Water Conservation Through Furrow Diking
2
Water Sources
  • Rainfall
  • Not dependable
  • Timing, amount, guarantee
  • Irrigation
  • Costly
  • Limited (Source/Budget)

3
Potential / Water Use Efficiency
  • Peanut (62), Cotton (61), and Corn (86) are
    Non-irrigated in US
  • Improve irrigation efficiency of surface applied
    water

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5
Runoff and ponding are problems with
conventional furrows.
Erosion is a problem with sloped areas and heavy
precipitation.
6
Furrow Diking
  • Tillage management tool
  • May be part of cultivation or done as early as
    planting
  • Creates a series of basins and dams
  • Provides more soil surface to absorb water
  • Captures water for better distribution

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9
Furrow Dikes
  • Previously used in Arid Regions
  • Prevent loss to evaporation
  • Promote infiltration by surrounding irrigation
    water with soil
  • Applicable in Southeast
  • With or without irrigation
  • Economic and environmental benefit

10
Basins are created and soil is loosened leaving a
rough surface.
11
Research Objectives
  • Evaluate furrow dikes in irrigated and
    non-irrigated systems
  • Do they significantly contribute to water
    availability?
  • Will this have economical impact?

12
  • Compare Irrigated and Dryland with and without
    Furrow Dikes
  • Irrigated separately by diking
  • Irrigator Pro software
  • Peanut, Cotton, Corn
  • Soil water potential
  • 20, 40, 60 cm depths in crop row

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14
Soil Surface
8 in
16 in
24 in
Watermark Sensors Soil Water Potential
15
Soil Water Potential 8 Corn 2005
Blue arrows show dates where all plots were
irrigated. Red arrows show irrigation in
non-diked plots.
16
Soil Water Potential 16 Corn 2005
Blue arrows show dates where all plots were
irrigated. Red arrows show irrigation in
non-diked plots.
17
Soil Water Potential 24 Corn 2005
Blue arrows show dates where all plots were
irrigated. Red arrows show irrigation in
non-diked plots.
18
Rainfall Accumulation Terrell County, GA 2005
H. Dennis
Centimeters
35 Rain events 22.8 inches during corn
season Non-diked had 5 irrigations 4.5
inches Furrow diked had 3 irrigations 2.5 inches
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21
Results - 2005
  • Documented rapid soil moisture response
  • Saved 2 irrigation in corn
  • Peanut and cotton 1 irrigation
  • Treatments had similar yield
  • No adversity to furrow diking

22
2006 Southeast Drought
23
Inches of Water Use (events) - 2006
24
Soil Water Potential 8 Cotton 2006
25
Soil Water Potential 8 Cotton 2006
Blue arrows show irrigation of diked plots. Red
arrows show irrigation of non-diked plots.
26
  • Irrigator Pro software
  • Peanut, Cotton, Corn
  • Irrigation levels
  • 100, 66, 33, and dryland
  • Diking used in each irrigation level

27
2006 Crop Yield
28
2006 Corn Yield
29
2006 Corn
30
2006 Cotton Yield
31
2006 Peanut Yield
32
Results 2006
  • Greater response after rain events/irrigation
    resulting in longer maintenance of soil moisture
  • Saved 1 irrigation in cotton
  • Cotton, Corn, and Peanut yield positively
    influenced by furrow diking
  • Shows economical and environmental promise for
    the future 2005 and 2006

33
Southeast Watershed Rsch Lab
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35
Simulated Rainfall at 2/ Hour
Plant available water is estimated assuming that
total ET is 0.25/day.
36
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