what are the root zone depth of different salt tolerant crops?

[zeeshancivilian]

Hello
I m a student of civil engg. and i am doing a project that how can i irrigate salt tolerant crops withe saline water?
so if any one find any help ful tip please mail me

thanks
zeeshan

 

[agriengineer]

Search for the agronomic/physiological characteristics of specific crops.

In irrigation, rainfall, seepage, percolation, runoff, infiltration, crop water requirement, evapotranspiration, soil water-holding capacity, evaporation are considered to determine the volume of water. Delivery efficiency comes next. I suppose you already considered these.

 

[666]

First of all which is or are the crops salt tolerance in terms of yields decreasing at differents range of ECe (Electrical conductivity of the soil saturation extract)and ECw (Electrical conductivity of the irrigation water). If you do not know try to use references numbers through the paper #24 from FAO.,titled "Crop water requirements".

Secondly what type of soil are you using, Which is its actual infiltration rate, and permeability ,How Deep it is?How is the actual soil salinity of the soil used for this project?

Finally try to get from UC Davis at the water science Dep. more information.

 

[tomrinaz]

We monitored cotton under highly saline soils and water using a neutron probe in 1981-1983 in Goodyear, Arizona. The only way to grow the crop AT ALL was to keep the soil moisture content high, and thereby minimize, to the extent possibel, the ionic concentration of the soil solution. Soil moisture content in the lower part of the profile, I seem to recall part of the 2nd foot, and all of the 3rd foot, was so high all the time that roots would not develop there. The reason? Little air. So the salinity of the soil, a product of the soil texture (sandy loam I susspect) and the saline water, forced us to recommend high soil moisture maintenance, which lead to flooded conditions in to lower parts of the profile, which lead to absence of deep roots.