ISSN:
1573-5036
Keywords:
Calcareous soil
;
Dry matter
;
Grain yield
;
Leaching fraction
;
Root-zone salinity
;
Salinity tolerance
;
Sea water
;
Soil salinity
;
Triticum aestivum L.
;
Wheat
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary Sea water dilutions having ECi=2, 12, 18 and 24 mmhos/cm, at 20°C were used for weekly irrigations of the wheat line RI 3748 (Triticum aestivum L.) on an initially non-saline calcareous loamy sand soil. The added quantities were 1.1, 1.3 and 1.5 times the weekly evapotranspiration. The vegetative growth (G), grain yield (Y), g/1000 grains and ECe were significantly affected by ECi and not by L. ECiXL affected g/1000 grains and the early G only. Soil salinity ECe (0–60 cm) increased with time. The ration between time-averaged $$EC_e (\overline {EC} _e )$$ and ECi indicated that the higher the ECi the longer the time to reach steady-state condition. These ratios were 1.54, 0.73, 0.63 and 0.56 at ECi=2,12, 18, and 24, respectively. Regression of Y on $$\overline {EC} _e $$ or ECi is a parabola. It indicates that about 27% decrement in Y occurs at ECe=12.35 or ECi=8.3 whereas the given value for wheat in standard tables of crop tolerance to salinity is 50% decrement in Y.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02181358
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