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Assessment of Water Use on the Growth and Yield of White Grained Hybrid Maize (2018–2019)

A. KHATUN
Chief Scientific Officer and Head
IWM Division, BARI, GAzipur 1701

F. AKTER
Scientific Officer
IWM Division, BARI, Gazipur

Abstract/ Executive Summary:

The experiment was conducted at the experimental field of IWM Division, BARI, Gazipur and farmer’s field of Godagari, Rajshahi during 2016 -2017, 2017-2018 and 2018-19 to assess the water use on the growth and yield of BARI hybrid maize-13. Six levels of irrigation were applied for the experiment with four replications. Treatments were T₁= Rainfed, T₂= One irrigation at vegetative (25-30 DAS) stage, T₃= One irrigation at pre-flowering (55-65 DAS) stage, T₄= One irrigation at grain filling (90-100 DAS) stage, T₅= Two irrigation each at pre-flowering (55-65 DAS) and grain filling (90-100 DAS) stages, T₆= Three irrigation each at vegetative (25-30 DAS), pre-flowering and grain filling stages. The results showed that most of the yield contributing character values were found higher in treatment T₅for both the locations where two irrigation at pre-flowering and grain filling stages were applied. The treatment T₆produced the highest yield in 2016-17 at Gazipur (6.80 t/ha) and Rajshahi (5.80 t/h). But during 2017-18 and 2018-19, treatment T₅ achieved the highest yield at both locations. The lowest yield (4.77 t/ha, 6.57 t/ha and 9.32 t/ha) and (4.28 t/ha, 5.60 t/ha and 5.32 t/ha) were found in treatment T₁ at Gazipur and at Rajshahi where no irrigation was applied. Among the one irrigation treatments, treatment T₃did well at both locations. The highest BCR was obtained from treatment T₅in most of the growing seasons. Hence, irrigation at pre-flowering and grain filling stages were found to be effective for BARI hybrid maize-13.

Keywords: Water use, Maize, Irrigation

Location: IWM Division of Bangladesh Agricultural Research Institute, Gazipur and farmer’s field of Godagari, Rajshahi

Start Date: 00-00-2016

End Date: 00-00-2019

Program Area: Crop-Soil-Water Management

Commodity: Irrigation scheduling, Maize

Objectives:

1. To find out the effect of different levels of water use on the growth and yield, and

2. To find out the critical stages to water stress for white-grained hybrid maize line.

Methodology:

The experiment was conducted at the experimental field of IWM Division of Bangladesh Agricultural Research Institute, Gazipur and at farmer’s field of Kadamshahar, Godagari, Barind, Rajshahi during 2016-2017, 2017-18 and 2018-19. The soil was clay loam with field capacity (28.5-29%), and bulk density (1.44-1.48) gm/cc at both locations. Recommended dose of fertilizers were applied @ N₂₅₀P₅₅K₁₁₀S₄₀Zn₅B_1.5kg/ha and CD @ 5 t/ha. Full doses of P, K, S, Zn, B, and cowdung were applied at the time of final land preparation. Nitrogen was applied in equal three splits, 1/3^rd amount of urea -N was applied at the time of final land preparation and the rest of the urea -N was applied in equal two installments as a top dressing. The experiment was laid out in an RCBD design with three replications. The unit plot size was 5.0 m × 3.6 m. The treatments were selected based on irrigation application at different growth stages as stated below: T₁= Rainfed; T₂= One irrigation at vegetative (25-30 DAP) stage; T₃= One irrigation at pre-flowering (55-65 DAP) stage; T₄= One irrigation at grain filling (90-100 DAP) stage; T₅= Two irrigation each at pre-flowering (55-65 DAP) and grain filling (90-100 DAP) stages; T₆= Three irrigation each at vegetative, pre-flowering and grain filling stages; The selected crop was maize and the variety was BARI (white grained) Hybrid maize-13. Seeds were sown on 11 December 2016, 28 November 2017 and 22 November 2018 at Joydebpur at a spacing of 20 cm plant to plant and 60 cm line to line and in farmer’s field of Kadamshahar, Godagari, Barind, Rajshahi seeds were sown on 28 November 2016, 03 December 2017 and 04 November, 2018 at the same spacing. The crop was harvested on 7 May 2017, 6 May 2018 and 02 May 2019 at Joydebpur and 8 May 2017, 16 May 2018 and 09 April 2019 at Rajshahi. A measured amount of water was applied to each plot as per treatment to maintain the soil moisture content in the root zone up to field capacity. Ten plants from each plot were selected randomly for the collection of data on growth, yield components and yield. Undesirable plants were rouged out. At physiological maturity, ears were harvested and then dried. After 4-5 days, sun drying, ears were and again dried for 2-3 days. The grain yield data was collected when the grain moisture was 13%.

Source of Information: Int. J. Agril. Res. Innov. Tech. 10(2): 137-145, December 2020

Article Link (Online Journal): DOI: https://doi.org/10.3329/ijarit.v10i2.51587

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Based on the results, BARI hybrid maize-13 had a good response to different irrigation regimes. It can be concluded that two irrigation at pre-flowering and grain filling stages will be effective for the highest yield of BARI hybrid maize-13 at both locations. And it seems that the pre-flowering stage is more responsive to irrigation followed by the vegetative and grain filling stage.

Knowledge Management: Journal