lecture 5 Flashcards
1
Q
6 irrigation systems
A
sprinlker surface drip sub-irrigation sub-subsurface hydroponics
2
Q
draw a picture of a conceptual model for irrigation system selection ( existing situation , and brought to sitiuation etc)
A
ok
3
Q
sprinkler irrigation characetristics
A
water sprayed into air
system is pressurised
requires pumping
4
Q
sprinlker advantages
A
suitable for most crops flat land not needed pretty efficient pretty uniform low labour
5
Q
sprinkler disadvantages
A
wind spacing spray evap high investment damage foliar
6
Q
three characteristics of surface fed
A
level
gravity
direct application to soil
7
Q
types of surface irrigation
A
bed and furrow furrow border-dyke wild flooding contour levees
8
Q
surface irrigation advantages
A
all crops
low skill
low investment
low energy
9
Q
surface irrigastion disadvantages
A
land leveling
crusting
erosion
filed access
10
Q
surface irrigation considerations
A
high application rate=high efficiency
high application rate=erosion
high efficieny=skilled planning
