Modification of transient state analytical model under different saline groundwater depths, irrigation water salinities and deficit irrigation for quinoa

Abstract

<span>Salinization of soil is primarily caused by capillary rise from saline shallow groundwater or<br /><span>application of saline irrigation water. In this investigation, the transient state analytical model<br /><span>was modified to predict water uptake from saline shallow groundwater, actual crop<br /><span>evapotranspiration, soil water content, dry matter, seed yield and soil salinity under different<br /><span>saline groundwater depths, irrigation water salinities and deficit irrigation for quinoa.<br /><span>Considering the effect of salinity on soil saturated hydraulic conductivity and maximum root<br /><span>depth in presence of shallow saline groundwater, the model resulted in good agreement between<br /><span>the measured and predicted saline groundwater uptake, soil salinity increase at different<br /><span>groundwater depths (300-800 mm) and water salinity (10-40 dS m<span>-1<span>). Therefore, the modified<br /><span>model is applicable for quinoa yield and soil salinity prediction and it could be a valuable tool<br /><span>for soil salinity management in presence of shallow saline groundwater. Furthermore, prediction<br /><span>of quinoa yield by the modified model can be used for better irrigation water salinity<br /><span>management under different saline groundwater depths, irrigation water salinities and deficit<br /><span>irrigation.</span></span></span></span></span></span></span></span></span></span></span></span></span><br /><br class="Apple-interchange-newline" /></span></span></span>