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<br />l\) <br />--J <br />---1 <br />-.J <br /> <br />Figure 1. <br /> <br />.y ~:":' \ <br />". ,". <br /> <br />;'.~~;:J <br />" <br /> <br />0.7 <br /> <br />0.6 <br /> <br />, Salt tolerance of crop, EC~ <br />F.c = E I' , <br />lect. COM. 0 'rflg. ..ater <br /> <br />or <br /> <br />F' = Boron tolerance of crop, 8~ <br />c Boron conc. 01 irrig. ..ater <br /> <br />I <br />I <br />\ <br />I <br />I <br /> <br />- <br />C <br />Q) <br />E <br />Q) <br />..... <br />'::l <br />CT <br />Q) <br />0:: <br /> <br />0.5 <br /> <br /> <br />0.4 <br /> <br />I <br />I <br />'1' <br />\ <br />~ <br />I <br />I <br />~ <br />, <br />, <br />~ <br />, <br />};. <br />\ <br />\ <br />h <br />\ <br />\ <br />, <br />b.. <br />, <br />2:>" <br /> <br />CJ'I <br />c <br />1: <br />u <br />o <br />Q) <br />~ <br /> <br />Q3 <br /> <br />0.2 <br /> <br /> <br />Conventional Irrigation <br />LR = 0.3086/(Fc;,),.702 <br /> <br />0.1 <br /> <br />o <br />o 1.0 2.0 3.0 4.0 <br />Permissi ble Average Concentration <br />for Rootzone, F~ <br /> <br />5.0 <br />Factor <br /> <br />Relation between permissible average <br />concentration factor for the root zone (F~) <br />and the leaching requirment (Lr). <br /> <br />s. <br /> <br />Rhoades <br /> <br />,. <br />