Effect of subsurface drip irrigation on onion yield

• Published in: Irrigation science Vol. 27; no. 2; pp. 97 - 108
• Main Authors: Patel, Neelam, Rajput, T. B. S
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Berlin/Heidelberg : Springer-Verlag 01.01.2009; Springer-Verlag; Springer Nature B.V
• Subjects: Agriculture; Agronomy; Aquatic Pollution; Biomedical and Life Sciences; Climate Change; Crop science; Environment; Irrigation; Life Sciences; Loam soils; Onions; Original Paper; Sustainable Development; Waste Water Technology; Water Industry/Water Technologies; Water Management; Water Pollution Control; Crop Evapotranspiration; Deficit Irrigation; Drip Irrigation System; Soil Water Content; Drip Irrigation
• ISSN: 0342-7188; 1432-1319
• DOI: 10.1007/s00271-008-0125-0

Subsurface drip system is the latest method of irrigation. The design of subsurface drip system involves consideration of structure and texture of soil, and crop's root development pattern. A 3-year experiment was conducted on onion (Allium Cepa L., cv. Creole Red) in a sandy loam soil from October to May in 2002-2003, 2003-2004 and 2004-2005 to study the effect of depth of placement of drip lateral and different levels of irrigation on yield. Tests for uniformity of water application through the system were carried out in December of each year. Three different irrigation levels of 60, 80 and 100% of the crop evapotranspiration and six placement depths of the drip laterals (surface (0), 5, 10, 15, 20 and 30 cm) were maintained in the study. Onion yield was significantly affected by the placement depth of the drip lateral. Maximum yield (25.7 t ha⁻¹) was obtained by applying the 60.7 cm of irrigation water and by placing the drip lateral at 10 cm soil depth. Maximum irrigation water use efficiency (IWUE) (0.55 t ha⁻¹ cm⁻¹) was obtained by placing the drip lateral at 10 cm depth. The greater vertical movement of water in the sandy-loam soil took place because of the predominant role of gravity rather than that of the capillary forces. Therefore, placement of drip lateral at shallow depths is recommended in onion crop to get higher yield.