Effect of Drip Irrigation on Grain Yield and Water Use Efficiency (WUE) of Corn (Zea mayze. L) Under Winged and Non- Winged Tape Under Ahwaz Climatic Condition

Authors

1 PhD Student, Department of Irrigation and Drainage, Faculty of Water Engineering, Shahid Chamran University of Ahvaz, Iran

2 Professor, Department of Irrigation and Drainage, Faculty of Water Engineering, Shahid Chamran University of Ahvaz, Iran

3 PhD student in Agronomy and Plant Breeding, Shahid Chamran University of Ahvaz, Iran

Abstract

In order to reduce evaporation from the soil surface and to increase the water use efficiency in maize, a research was conducted as a factorial experiment based on the randomized complete block design with three replications at the experimental field of Faculty of Water Engineering, Shahid Chamran University of Ahvaz in 2016-2017. The experiments were carried out using three levels of irrigation (application 100, 80 & 60 percent of the crop water requirement) and two types of tubes (with a plastic mulch cover having the width of 40 cm [winged tape] and without cover [tape without wing]). Significant interactions were observed between irrigation and moisture levels in some parameters such as number of leaves, stem fresh and dry weight and 100-seed weight, although no significant interaction were observed among the other parameters. The maximum grain yield was obtained in treatment with 80% water requirement with average weight of 13650 kg ha-1, however, it had no no meaningful difference with 100% water requirement treatment. The maximum water use efficiency was observed in treatment of 60% water requirement, with 2.81 kg/m3. Between irrigation methods, the winged method increased 13% both of the grain yield and water use efficiency compared to those with the non-winged method of irrigation in this study, which can be attributed to the reduced evaporation from the soil surface.

Keywords

References

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Water and Soil Science
Volume 30, Issue 4
January 2021
Pages 29-41

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