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Effect of Age of Seedlings at Staggered Planting and Nutrient Management on the Growth Performance of Aromatic Fine Rice (oryza Sativa L. Cv. BRRI Dhan38)

Anup Roy
Department of Agronomy, Bangladesh Agricultural University, Mymensingh - 2202, Bangladesh

Md. Abdur Rahman Sarkar
Department of Agronomy, Bangladesh Agricultural University, Mymensingh - 2202, Bangladesh

Afrina Rahman
Department of Agronomy, Bangladesh Agricultural University, Mymensingh - 2202, Bangladesh

Swapan Kumar Paul
Department of Agronomy, Bangladesh Agricultural University, Mymensingh - 2202, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during June to December 2014 with a view to finding out the effect of age of seedlings at staggered planting and nutrient management on growth of aromatic fine rice (cv. BRRI dhan38). The experiment comprised three ages of seedlings viz., 30, 45 and 60- day old and six treatment of nutrient managements viz. control (no manures and fertilizers), recommended dose of inorganic fertilizers, 50% of recommended dose of inorganic fertilizers + cowdung @ 5 t ha^-1, 75% of recommended dose of inorganic fertilizers + cowdung @ 5 t ha^-1, 50% of recommended dose of inorganic fertilizers + poultry manure @ 2.5 t ha^-1 and 75% of recommended dose of inorganic fertilizers + poultry manure @ 2.5 t ha^-1. The experiment was laid out in a randomized complete block design with three replications. The effect of age of seedlings and nutrient management and their interaction were significant on crop growth characters of aromatic fine rice. The result revealed that the highest plant height, total tiller hill^-1, total dry matter production hill^-1 and CGR were found when 30-day old seedlings were transplanted. Among the nutrient managements the highest growth parameters was obtain in 75% of recommended dose of inorganic fertilizers + poultry manure @ 2.5 t ha^-1 due to the continuous supply of nutrients by the combination of organic and inorganic fertilizer which led to better growth in plants. In 30-day old seedlings with 75% inorganic fertilizer + poultry manure @ 2.5 t ha^-1 treatment performed best in case of all growth parameters, while the lowest one was observed in 60-day old seedlings with control. Therefore, 30-day old seedlings with 75% inorganic fertilizer + poultry manure @ 2.5 t ha^-1 treatment might be a promising practice in aromatic fine rice cultivation in terms of growth performance.

Keywords: Growth, Nutrient, Rice, Seedling, Staggered planting

Location: Bangladesh Agricultural University, Mymensingh

Start Date: 00-06-2014

End Date: 00-12-2014

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To evaluate the comparative effects of different seedling age at staggered planting and nutrient management on the growth performance of aromatic rice cultivar (cv. BRRI dhan38).

Methodology:

The experiment was conducted at the Agronomy Field Laboratory (24° 75' N latitude and 90° 50' E longitude and at an altitude of 18 meter above the sea level), of Bangladesh Agricultural University, Mymensingh in the Aman (rainy) season during June to December 2014. The experimental site belongs to the Sonatola series of the dark grey floodplain soil type under Old Brahmaputra Floodplain Agro-Ecological Zone (AEZ-9). The field was a medium high land with well drained silty-loam texture having pH value 6.5 and 1.29% organic matter content. Aromatic rice variety BRRI dhan38 was used as plant material. The experiment comprised three ages of seedlings viz. 30, 45 and 60-day old and six treatment of nutrient managements viz. control (no manures and fertilizers), recommended dose of inorganic fertilizers (i.e. 150, 97, 70, 60 and 12 kg ha^-1 of Urea, TSP, MoP, Gypsum and ZnSO₄, respectively), 50% of recommended dose of inorganic fertilizers + cowdung @ 5 t ha^-1, 75% of recommended dose of inorganic fertilizers + cowdung @ 5t ha^-1, 50% of recommended dose of inorganic fertilizers + poultry manure @ 2.5 t ha^-1 and 75% of recommended dose of inorganic fertilizers + poultry manure @ 2.5 t ha^-1. The experiment was laid out in a randomized complete block design with three replications. The size of unit plot was 4.0 m × 2.5 m (10 m²). The distances between blocks and plots were 1.0 m and 75 cm, respectively. Sprouted seeds were sown in the prepared wet nursery bed on 23 June 2014. The main field was prepared by power tiller with three times ploughing and cross ploughing followed by laddering. The land was fertilized as per treatment specifications. At the time of final land preparation, respective unit plots were fertilized with specified amount of cowdung, poultry manure, triple superphosphate (TSP), muriate of potash (MoP), gypsum and zinc sulphate. Urea was applied in three equal splits at 15, 30 and 45 days after transplanting (DAT). Seedlings were transplanted on the well puddled experimental plots following staggering of transplanting on 23 July, 8 August and 23 August 2014, maintaining the spacing of 25 cm × 15 cm using three seedlings hill^-1. Intercultural operations were done for ensuring and maintaining the vigorous growth of the crop. Intensive care was taken throughout the growing season. Growth parameter such as plant height, number of tillers hill^-1, total dry matter (TDM) production hill^-1 etc. were determined at 15, 30, 45 and 60 DAT. Five hills (excluding border hills) were selected randomly from each plot and marked by bamboo stick to collect data on plant height and tiller number. Plant height was measured with the tallest tiller from the selected hills which gave the average plant height. For each destructive sample, five hills were uprooted excluding the border rows and central harvest area. Samples were washed with water, derooted and leaves were separated from the culms. Then the plant samples were dried in an electric oven for 72 hour until they reached at constant weight, and their dry weights were recorded. CGR was calculated following the standard formulae. The collected data were compiled and tabulated in proper from and subjected to statistical analysis. The recorded data were analyzed following analysis of variance technique and mean differences were adjudged by Duncan’s Multiple Range Test.

Source of Information: Archives of Agriculture and Environmental Science 5(2): 130-136 (2020)

Article Link (Online Journal): https://doi.org/10.26832/24566632.2020.050207

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The effect of age of seedlings at staggered planting and nutrient management and their interaction were significant on crop growth of aromatic fine rice. The highest plant height, tiller hill^-1, dry matter and CGR were recorded in 30-day old seedlings. In case of nutrient management, 75% of recommended dose of inorganic fertilizers + poultry manure @ 2.5 t ha^-1 produced the highest growth parameters. In interaction, 30-day old seedlings with 75% of recommended dose of inorganic fertilizers + poultry manure @ 2.5 t ha^-1 produced the highest value in case of all growth characters. Therefore, 30-day old seedlings fertilized with 75% of recommended dose of inorganic fertilizers + poultry manure @ 2.5 t ha^-1 appeared as the promising technique for proper growth of aromatic fine rice (cv. BRRI dhan38).

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