Volume 19, Issue 71 (spring 2015)                   jwss 2015, 19(71): 287-297 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Mohamadzade F, Gheysari M, Landi E. Development and Evaluation of Estimation Models of Wetting Pattern of Drippers in a Sandy Soil with High Gravel . jwss 2015; 19 (71) :287-297
URL: http://jstnar.iut.ac.ir/article-1-3020-en.html
Dept. of Water Eng., College of Agric., Isf. Univ. of Technol., Isfahan, Iran. , gheysari@cc.iut.ac.ir
Abstract:   (11807 Views)

The objectives of this study were to investigate the effect of dripper discharge and irrigation time on the wetted width in the sandy loam soil with high percentage of gravel and to evaluate previously developed models of estimation of the wetted width in the previous researches. The treatments included three irrigation times (T) of 4, 8 and 12 h and three dripper discharge rates (q) of 2, 4 and 8 l/h, with three replications. The wetted width of each dripper was measured 24 hours after irrigation application. The maximum and minimum wetted widths were 159.8 and 63.5 cm for T12q8 and T4q2, respectively. A linear model was developed as a function of two variables of irrigation time and dripper discharge rate was developed to predict the wetted width in sandy loam soil with high percentage of gravel. The evaluation of recommended models of wetted width for the studied soil showed that only one of six models was accurate enough to estimate wetted width. It can be concluded that the presence of gravels in the soil has a complex effect on width and depth of wetted zone. Thus, it is necessary to measure the wetted width and wetted depth in the field.

Full-Text [PDF 15 kb]   (2163 Downloads)    
Type of Study: Research | Subject: Ggeneral
Received: 2015/06/13 | Accepted: 2015/06/13 | Published: 2015/06/13

Add your comments about this article : Your username or Email:

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2024 CC BY-NC 4.0 | JWSS - Isfahan University of Technology

Designed & Developed by : Yektaweb