Regulated deficit irrigation scheduling for maize cultivation in North-western areas of Bangladesh
Paper Details
Regulated deficit irrigation scheduling for maize cultivation in North-western areas of Bangladesh
Abstract
Drought is one of the major issues for agricultural production in north western part of Bangladesh. A field experiment was conducted at Agronomy Field Laboratory, Department of Agronomy and Agricultural Extension, University of Rajshahi, during the period from November 2015 to March 2016 to examine the effect of deficit irrigation regimes on growth, yield contributing characters and yield of Maize. Irrigation amounts were calculated based onpan evaporation (Epan). Five irrigation treatments viz. T1 (irrigation equivalent to 0.5 Epan), T2 (0.75 Epan), T3 (1.0 Epan) and T4 (1.25 Epan) was compared with standard irrigation or farmers practice as control (T0). The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. Considering crop growth, yield components and yield of maize it was found that and most of the cases highest performance was noted for control treatment which reduced gradually with the reduction of irrigation amount. The highest (5.62 t ha-1) grain yield was observed in T0 which was statistically identical to the treatment T4 (5.42 t ha-1) while it reduced significantly by 9.85%, 9.14%, and 12.5%for irrigation treatment T3,T2 and T1 respectively. Considering water use efficiency (WUE), the value was lowest with control. Based on our result, it can be suggested that irrigation amount equivalent to 1.25 Epan can produce nearly same amount of maize yield with 14.42 % less water and increase WUE by 9.09%. Irrigation amount equivalent to 1.25 Epan would be the best practice for maize cultivation in drought affected North-western areas of Bangladesh.
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Momtaz Begum Shima, Jinat Jahan Ranu, Monira Khatun, Mesbaus Salahin, Nilufar Yasmin, Abu Mohammad Shahidul Alam, Mohammad Robiul Islam (2018), Regulated deficit irrigation scheduling for maize cultivation in North-western areas of Bangladesh; IJB, V12, N2, February, P52-62
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