Abuarab, M. E.  <br/><br/>
Effect of air injection under subsurface drip irrigation on yield and water use efficiency of corn in sand clay loam soil  [electronic resource]. 
 تأثير حقن الهواء تحت نظام الري بالتنقيط التحت السطحي على إنتاجية وكفاءة استخدام المياه للذرة الشامية في التربة الرملية الطينية الطميية. 

 - p.85-102. 
<br/><br/>Includes references. 
<br/><br/> Subsurface drip irrigation (SDI) can substantially reduce the amount of irrigation water required for corn production. However, corn yield improvements applied will offset the initial cost of drip installation. The air-injection system is at least potentially applicable to (SDI) system. Consequently, the air affecting soil volume is probably limited to a chimney column directed above the emitter outlet. A field study was conducted in 20 I 0 and 20 II, to evaluate the effect of air-injection in SDI on the performance of corn. Experimental treatments were drip irrigation (DI), SD/, and SDI with air-injection. The results showed that the leaf area per plant was I.477 and 1.0045 times greater with the aerated treatment than in DI and SD[ respectively. Tuber bulking was faster, and terminated earlier under air-injected drip system, than in SDI and DL Root distribution, stem diameter, plant height and number of grains per plant were noticed to be higher under air injection than DI and SDL The Air-injection had the highest water use efficiency (WUE) and irrigation water use efficiency (/WUE) on both growing seasons, it was 1.442 and 1.096 kg m-3 in 2010 and 1.463 and 1.112 kg m-3 in 2011 for WUE and /WUE respectively. Comparing with the DI and SD/, the Air injection treatment achieved a significant higher productivity through the two seasons. Increasing of Air-injection treatment yield is 37.78% and 12.27% at 2010 and 38.46% and 12.5% at 2011 compared to the DI and SDI treatments respectively. Data from this study indicate that corn yield can be improved under SDI if the drip water is aerated. Keywords: Drip irrigation, subsurface drip irrigation, aeration, corn, water use efficiency. 
<br/><br/><br/>Summary in Arabic. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Corn--Machinary.<br/>Corn--Production.<br/>Corn--Yields.<br/>Microirrigation.<br/>Water efficiency.