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1
|
- L.S Owen, V.G. Allen, C.J. Green, C.P. Brown
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2
|
- Highly dependent upon irrigation
- Major source of irrigation water:
the Ogallala aquifer
- Rate of pumping greatly exceeds rate of recharge
- Future sources of irrigation water:
secondary wastewaters or waters from saline aquifers
|
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3
|
- High saline waters decrease yield/growth
- Plants can produce osmotic regulating compounds to adjust to salt
stress
- This energy is not available for normal plant growth
- This results in an overall reduction in plant growth
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4
|
- Known to influence the growth and development of plants
- May moderate the negative effects of salinity
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5
|
- To determine effects of nitrogen and phosphorus additions on growth and
nutritive value of forage sorghum grown under saline conditions in a
greenhouse
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6
|
- Two experiments (experiments 1 and 2)
- Experimental design: CRD with
four replications/treatment
- Sorghum bicolor: two varieties
- DeKalb FS-5 and Brown Midrib 100
- Treatments:
- Salinity levels (1.7, 3.4, 5.1 dS m-1)
- Nitrogen levels (100 and 200 kg ha-1)
- Phosphorus levels (50 and 100 kg ha-1)
- Other nutrients supplied as non-limiting
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7
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8
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|
|
9
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|
|
10
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|
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11
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12
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|
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13
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|
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14
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15
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|
|
16
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|
|
17
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|
|
18
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|
|
19
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|
|
20
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|
|
21
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|
|
22
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|
|
23
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|
|
24
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|
|
25
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|
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26
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27
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Notes
