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Effect of Transplanting Dates on Yield and Yield Components of Nerica Rice Mutants at Drought Prone Areas of Bangladesh

M. I. Ali
Agronomy Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh-2202, Bangladesh.

M. A. Islam
Agricultural Engineering Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh-2202, Bangladesh.

M. M. Islam
Agronomy Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh-2202, Bangladesh.

M. S. Islam
Agronomy Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh-2202, Bangladesh.

M. A. Rouf
Bangladesh Institute of Nuclear Agriculture, Mymensingh-2202, Bangladesh.

N. H. Mehedi
Bangladesh Institute of Nuclear Agriculture, Mymensingh-2202, Bangladesh.

Abstract/ Executive Summary:

To investigate the effect of various transplanting dates on yield and yield attributing characteristics of Nerica rice mutants at drought-prone areas, Ishurdi and Chapai Nawabgonj during aman season. Two advanced Nerica mutant lines (N₄/350/P-4(5), N₁₀/350/P-5-4) were evaluated compared with one check variety (Binadhan-17) with three dates of transplanting (D1=July 20, D2=July 30, and D3=August 10). The experiments were laid out on randomized complete block design (RCBD) with three replications. Twenty-five days old seedlings were transplanted with optimum 20 x 20 cm row to row and plant to plant distance. The unit plot size was 3 m×4 m. The recommended doses of fertilizer were applied. The effect of dates of transplanting on the grain yield of D3 was the highest (5.10 t ha^-1) whereas D2 produced the lowest grain yield (4.24 t ha^-1). Among the mutant lines/varieties, Binadhan-17 produced the highest grain yield (4.94 t ha^-1) followed by N₄/350/P-4(5) (4.57 t ha^-1). The interaction effect of date and variety showed that Binadhan-17 produced the maximum yield (5.56 t ha^-1) at D3 followed by N₄/350/P-4(5) mutant (4.92 t ha^-1). The interaction effect of date and location, D3 transplanting date produced the maximum yield (5.23 t ha^-1) at Ishurdi which was followed by transplanting (4.96 t ha^-1) at Chapai Nawabgonj. The interaction effect of variety and location Binadhan-17 produced maximum yield (5.06 t ha^-1) in Ishurdi followed by Binadhan-17 in Chapai Nawabgonj (4.82 t ha^-1). The interaction effect of date, variety and location transplanting date D3, Binadhan-17 produced maximum yield (5.70 t ha^-1) in Ishurdi followed by transplanting date D3, Binadhan-17 in Chapai Nawabgonj (5.43 t ha^-1). The data recorded on crop duration from transplanting to maturity revealed that the advanced mutant line N₄/350/P-4(5) required the least average of 108 days and the Binadhan-17 required a maximum average of 119 days. Therefore, 10th August was found to be the best date of transplanting and Binadhan 17 showed the best performance at Ishwardi in Bangladesh.

Keywords: NERICA; Mutant; Transplanting time; Drought, Yield, Rice

Location: Department of Agronomy, Bangladesh Institute of Nuclear Agriculture (BINA)

Start Date: 00-00-2017

End Date: 00-00-2017

Program Area: Crop-Soil-Water Management

Commodity: T. Aman

Objectives:

To observe how to yield performances of Nerica mutants rice were affected by different dates of transplanting and investigate the effect of transplanting time on yield and yield contributing characters within the context of climate change in Bangladesh.

Methodology:

The experiment was carried out at the Experimental Field of the Department of Agronomy, Bangladesh Institute of Nuclear Agriculture (BINA) Sub-station Ishurdi (Latitude: 24.1234077, Longitude: 89.076996) and Chapai Nawabgonj (Latitude: 24.6045946, Longitude: 88.2933188) during aman season of 2017. Two advanced Nerica mutant lines (N₄/350/P-4(5), N₁₀/350/P-5-4) were evaluated compared with one check variety (Binadhan-17) with three dates of transplanting (D1=July 20, D2=July 30, and D3=August 10). The experiment was laid out in a factorial Randomized Complete Block Design with three replications. The unit plot size was 3m x 4m. Row and hill spacing were (20×15) cm. The plots of Aman rice were fertilized with N, P, K, Zn, and Boron respectively according to the recommendation of the Bangladesh Agriculture Research Council (BARC, 2012). The whole amount at triple superphosphate, muriatic of potash, gypsum, boron, and zinc sulphate (separately) were applied to the soil at the time of final land preparation. Urea was applied in three equal splits. Thirty days old seedlings were transplanted in the experimental plots. The maturity of crops was determined when some 70% of the seeds became attain the color of their characters. The weight of grains was adjusted to 14% moisture content. Grain and straw yield was converted to t ha^-1. From the 10 randomly harvested hills, the following data were recorded, plant height, number of total tillers hill^-1, number of effective tillers hill^-1, number of non-effective tillers hill^-1, number of grain panicle^-1, number of unfilled grains panicle^- ¹, 1000 grain weight, grain yield (t ha^-1), straw yield (t ha^-1) which were subjected to analysis of variance (ANOVA) and the treatment means were compared using the least significant difference (LSD) test.

Source of Information: Asian Journal of Agricultural and Horticultural Research - 3(4): 1-6, 2019

Article Link (Online Journal): DOI: 10.9734/AJAHR/2019/v3i430006

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The overall results of the experiments led to the conclusion that there was a significant effect of transplanting dates on the yield and yield contributing characters of the NERICA rice mutants with Binadhan 17 studied. The findings from the experiments can be concluded that,

The highest grain yield (4.94 t/ha) was produced which was followed by NERICA mutant N4/350/P-4(5) (4.57 t/ha) when transplanted on August 10 whereas July 30 transplanting produced the lowest grain yields (4.24 t ha^-1).
Among the mutant lines/varieties, Binadhan-17 produced the highest grain yield (4.94 t ha^-1) followed by N4/350/P- 4(5) (4.57 t ha^-1).
The interaction between different transplanting dates and varieties was significant. The maximum grain yield of Binadhan-17 was obtained when the crop was transplanted on August 10 at all the sites in Ishwardi (5.70 t/ha) and Chapai Nawabgonj farm (4.93). Therefore, it can be concluded, based on the results from this study, that Binadhan 17 should be transplanted on August 10 to obtain a higher grain yield. However, further studies considering different agro-ecological zones (AEZ) and fertilizer doses in conjunction with transplanting dates of NERICA rice mutants and Binadhan-17 are necessary.

Knowledge Management: Journal