Irrigating cotton

1
Irrigating cotton
2
Cable tow irrigation reel
3
Irrigation pump
4
Overhead irrigation mobile system Irrigating
bare soil using centre pivot
5
Overhead irrigation pivot point
6
Set sprinkler Sprinkler irrigation in Northern
California
7
Rows of set sprinklers in cotton crop
8
Main line
lateral line
Overhead irrigation, set sprinkler Portable
pipes (pipes do not move whilst irrigating).
Moveable pipe irrigation lines in California, USA
9
Moveable pipe irrigation lines, watering bare soil
10
Underground pipeline about to be laidLocation
Oakville, California, USA
11
Moon buggy mobile irrigation pumpsLocation
Northern California
12
Surface Irrigation methods
13
Irrigation bund in cotton crop in California
14
http//www.worldbank.org/html/cgiar/photo/rice.htm
l for slides of rice paddys
15
(No Transcript)
16
(No Transcript)
17
Use of siphon tubes to deliver water to furrows
(or borders). Note the different water levels of
the main ditch, and tubes in the background
18
Irrigation Siphon in head ditch
19
Dry irrigation head ditch
20
Furrow irrigation. Note the water coverage of the
entire furrow, and the broken earthen bund
(foreground) that permits water to enter.
21
Release of water from gated pipe, for furrow
irrigation of maize
22
Drainage from end of furrow. Note the wetting
front along the dry soil of the furrow low water
flow from furrow into drain and the use of mulch
to minimise evaporative losses.
23
Example of microirrigation. Arrow indicates
emittor. Note wetted soil only around plant.