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<br />.. ' <br /> <br />JH!i-2~,-19'38 10:':...1 <br /> <br />FPtl.: US[;A-1.if F',~ F. 'E~,~ICI, I> <br /> <br />TO <br /> <br />~":" _ ;25.:..r;..:::"~ <br /> <br />P.lJ2 <br /> <br />PROGRESS REPORT ON "ADlLlTY OF THREE FORAGE SPECIES <br />TO TOLERATE HIGH SALINE CONDITIONS J.:-i COLORo\DO" <br /> <br />0,5. Banuelos, Plant/Soil Scientist <br />2021 S. Peach Avenue, Fresno, California 93727 <br />PR, Beusclinck, Research Geneticist <br />207 Wa:ers Hall, Univer5ity of Missouri , Columbia, Mjssouri 65211 <br /> <br />Obj ective: <br /> <br />The objective of this greenhouse study is to compare biomass production and chloride <br />accumulation of different forage species, e.g., birdsfoot trefoil and tall fescue under typical saline <br />condition~ found at specific sites in Colorado, <br /> <br />Progress: <br /> <br />CSU Extension sent G. Banuelos two representative soils; "good" and "saline", Electrical <br />conductivity (Ee) was < I d51m for tile "good" and ~5 dS/m for the "saline". Water samples <br />were Also sent. These included "good water" (Pueblo River; EC~O. 8 dSfm). "rr.edium quality <br />water" (Pueblo well; EC~J.6 dS/m), and "saline water" (Arkansas River; EC~4.2 dS/m), Seeds <br />ofta1l fescue, narrow ieafbirdsfoot trefoil, and broadleafbirdsfoot trefoil were planted 11/1/97 in <br />each type ofsoi! and irrigated with each typ~ of water, respectiv'ely Narrow leaf germinated the <br />slowesl among the three speGi~s irrespeetiye oftreal.ment Thirty days after planting, tall fescue <br />WB.\ clipped for the first time in all treatments, Tall fescue appears lo thrive in the soils, <br />irrespective oftreatmem, Approximately 25 days later, tall fescue was again clipped, The third <br />and fourth clipping of tall fescue occurred in 2.0 day intervals respectively thereafter. Tall fescue <br />continues to thrive, Type of soil ane quality ofweler appear to have no effect (ba~ed Ofl biomass) <br />on growth of la!l fescue as of J 122/98. <br /> <br />Both species of birds foot trefoil have not been clipped as of 1/22. BroadleafbirdsfoOJ:, which is <br />growing betler and thicker lhan narrowleafbirdsfoot, will be clipped on 1/25198, Both species <br />have stunted growth in "saline soil" and "saline water" compared to all treatments, Interestingly, <br />both species of birds foot trefoil look better in "sa!ine" soil and "good water" than those growing <br />in "good" soil and "good water", We are expecting increased growth from all species in the <br />coming days as temperatures and day length increase. At the same time, we expect to observe <br />more obvious differences among the treatments for ~]:e three species, as salinity levels gradually <br />increase in the soil. As of today (J/22/98) tali fescue i3the most vigorous plant species under <br />these test conditions, <br /> <br />~OTHl P. 02 <br />