Ecophysiological Evaluation of Three Maize (Zea mays L.) Cultivars under Irrigation Regimes and Use of Super Absorbent

Subject Areas : Journal of Crop Ecophysiology

Allahyar  Hassanzadeh ¹ (Department of Agronomy, Malekan Branch, Islamic Azad University, Malekan, Iran)
Elnaz  Farajzadeh Memari Tabrizi ² (Department of Agronomy, Malekan Branch, Islamic Azad University, Malekan, Iran)

Received: 2014-12-06 Accepted : 2016-02-16 Published : 2016-03-20

Keywords: Grain yield, Maize, cultivar, Super absorbent, Water Shortage,

Abstract :

To evaluate the effects of using super absorbent and irrigation regimes on seed yield and yield components of maize cultivars a split plot experiment based on randomized complete block design with three replications was performed at the Research Field of Malekan Islamic Azad University. Main factor consisted of three irrigation regimes (irrigation after 70, 110 and 150 mm evaporation from pan) and subfactor of two levels of super absorbent applications (application and without application) and three maize cultivars (704, Iranian maxima and overseas maxima). Based on the results obtained it was revealed that highest seed yield (985 g/m2) belonged to the plants irrigated after 70 mm evaporation from the pan without using super absorbent. Irrigation after evaporation of 150 mm from the pan decreased both seed numbers per plant and 100 seed weight, and seed yield loss amounted to be 46.1% as compared with irrigation after 70 mm evaporation from the pan. Without using super absorbent and irrigation after 150 mm evaporation from the pan decreased seed number per ear by 38.8% and 100 seed weight by 13.8%. However, application of super absorbent and irrigation of plants after 150 mm evaporation from the pan increased by grain yield 38% as compared with out using super absorbent. There were not significant difference between cultivars for seed yield and yield components. It could be concluded that application of super absorbent under water shortage conditions may reduce crop yield losses.

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