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Published in Agron J 91:922-927 (1999)
© 1999 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Water Budget and Yield of Dryland Cotton Intercropped with Terminated Winter Wheat

R.Louis Baumhardta and Robert J. Lascanob

a USDA-ARS, Conservation and Production Res. Lab., P.O. Drawer 10, Bushland, TX 79012-0010 USA
b Texas Agric. Exp. Stn., Route 3, Box 219, Lubbock, TX 79401-9757 USA



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  		Fig. 1 Rain and runoff on DOY 143, 1992. Rain for the event totaled 55 mm with a 30 minute period when the sustained rain intensity was 60 mm h-1. Runoff for the conventional tillage continuous cotton (CCC) was 37 mm, compared with 5 mm for the terminated wheat–cotton (TWC) residue plots

 


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  		Fig. 2 Cumulative annual precipitation and infiltration, calculated as precipitation minus runoff, for the conservation tillage terminated wheat–cotton (TWC) and conventional tillage continuous cotton (CCC) cropping systems. Error bars show the standard deviation of the mean precipitation minus runoff

 


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  		Fig. 3 Annual water use by conventional tillage continuous cotton (CCC) and conservation tillage terminated wheat–cotton (TWC) cropping systems, with error bars showing the combined standard deviation of runoff and soil water use. Shading within the histograms shows water use partitioned into growing (fill) and fallow (open) periods. For TWC, the fallow period represents water use for wheat growth

 




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Copyright © 1999 by the American Society of Agronomy.