| Autor: |
Zartman, R. E, Miller, T. D., Goodin, J. R., Gichuru, M. |
| Zdroj: |
Journal of Environmental Quality; April 1980, Vol. 9 Issue: 2 p187-190, 4p |
| Abstrakt: |
Field studies were conducted during a 4‐year period to determine the influence of water quality on forage production. Three levels of blow down water (used to cool the electrical generating facility) (EC = 12 mmhos/cm, SAR = 11) and city water (EC = 1.5 mmhos/cm, SAR = 4.3) were used to irrigate alfalfa (Medicago sativaL.) and fourwinged saltbush [Atriplex canescens(Pursh.) Nutt.]. Forage stands were initiated in 1975 on a Friona fine sandy loam which is a fine‐loamy, mixed, thermic, Petrocalcic Paleustoll. Alfalfa yields responded positively to irrigation. The highest yield occurred in the high‐irrigation city water treatment followed by the high‐irrigation blow down water treatment. The medium‐irrigation levels produced intermediate yields, with the dryland production decreasing during the span of the experiment. Atriplexyields were not significantly affected by irrigation. There was no difference in forage production with respect to irrigation with either city or blow down water. The results of this experiment indicate that both alfalfa and Atriplexcan utilize blow down water as an irrigation water source. From a forage management perspective, however, there is a difference between the crops. Alfalfa responds to water additions with increased forage production, whereas Atriplexdoes not under these conditions. |
| Databáze: |
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