Subsurface drip irrigation success depends on surpassing the backpressure obstacle, a phenomenon which occurs when water application intensity exceeds infiltration rate of soil, reduces emitter flow rate. Thus, this study aimed to determine variation, in relation surface flow, four emitters buried at two depths loam soil (Yolo Loam soil), and generated by subsurface condition. The cavity radius...

Subsurface drip irrigation is defined as application of water below the soil surface through emitters, with discharge rates generally in the same range as surface drip irrigation. It has many advantages over surface drip. To see the response of subsurface drip irrigation on okra yield, a study was conducted at Indian Agricultural Research Institute, New Delhi, India during 2003 and 2004. Okra (...

In the Brazilian semi-arid, sustainable growth rates and higher standards of living in society may be attained by use irrigation aiming at obtaining best economical function without disregarding several factors, such as labor, soil, water supply. The objective this work is presenting an alternative design procedure for low-head bubble systems so to make technology more accessible users. An elec...

Abstract Drip irrigation systems are widely used worldwide to satisfy the water demand of agricultural crops. It is known that drip technology has a number other advantages, such as intensive irrigation, automation, and economical benefits. The methods which available in hydraulics calculation design. One most important issues system correct estimation discharge coming out drippers. As from hyd...

Gary A. Clark Research Irrigation Engineer Quick Facts Subsurface drip irrigation (SDI) is a low-pressure irrigation system that uses polyethylene driplines that are permanently buried below the soil surface. Water drips to the surrounding soil through built-in emitters (specialized small openings). SDI places water directly into the root zone of the crop. It may improve yield due to high appli...

This study aims to investigate the influence of treated wastewater (TWW) on hydraulic performance drip irrigation emitters. A field experiment was conducted in order test two types online emitters, a low pressure (LP) and standard (SP), at different working pressures (0.25 bar, 0.50 1.00 bar) using TWW. The emitters were initially evaluated laboratory for discharge exponent (X), coefficient (Kd...