Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Dry Matter Partitioning, Yield and Grain Protein Content of Fine Aromatic Boro Rice (cv. BRRI Dhan50) in Response to Nitrogen and Potassium Fertilization

Newton Chandra Paul
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

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

Md. Abdus Salam
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Shabuj Chandra Paul
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted to study dry matter partitioning, yield, and grain protein content of fine aromatic Boro rice (cv. BRRI dhan50) in response to nitrogen and potassium fertilization. The experiment consisted of four levels of nitrogen viz., 0, 50, 100, and 150 kg/ha and four levels of potassium viz., 0, 30, 60, and 90 kg/ha. The results revealed that at the growth stage, the highest total dry matter partitioning and accumulation were obtained from 150 kg N/ha along with 90 kg K/ha at the physiological maturity stage. At harvest, the highest number of tillers/hill (8.58), number of grains/panicle (113.9), grain yield (5.15 t/ha), and grain protein content (8.30%) were obtained from 100 kg N/ha along with 90 kg K/ha. Total dry matter partitioning and accumulation were greatly influenced by the application of 150 kg N/ha along with 90 kg K/ha. Application of 100 kg N/ha along with 90 kg K/ha interaction appeared as the promising practice in fine aromatic rice (cv. BRRI dhan50) cultivation in terms of yield and grain protein content.

Keywords: Dry matter partitioning, Grwoth stage, Yield, Grain protein content, Nitrogen level, Potassium level, Aromatic rice

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-12-2017

End Date: 00-05-2018

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer, Rice

Objectives:

To assess the interaction effect of nitrogen and potassium on dry matter partitioning, yield, and grain protein content of fine aromatic Boro rice (cv. BRRI dhan50).

Methodology:

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from December 2017 to May 2018. The experiment consisted of four levels of nitrogen viz., 0, 50, 100 and 150 kg/ha and four levels of potassium viz., 0, 30, 60 and 90 kg/ha. The 35 days old healthy seedlings were transplanted in the well puddled experimental plots (4.0 m × 2.5 m) on 6 January 2017 following RCBD with three replications. The space between two replications was 1.0 m and the plot to plot was 0.75 m. Phosphorus, sulphur and zinc were applied in each plot as a common dose @ 25, 18 and 3.5 kg/ha, respectively. The amount of nitrogen, phosphorus, potassium, sulphur and zinc required for each unit plot was applied in the form of urea, triple superphosphate, muriate of potash, gypsum and zinc sulphate, respectively. Intercultural operations were done for ensuring and maintaining normal growth of the crop when necessary. At each growth stage, five hills (plants) within each treatment were uprooted. Leaves, culms and panicles were separated, dried in paper bags by the oven and weighed by an electronic balance and then average data (g/hill) on dry weights of leaf, culm and panicle were calculated. Total dry matter (TDM) was calculated as the sum of the dry weights of the plant components. Per cent of dry matter, partitioning was calculated at maximum tillering, heading and physiological maturity stages by the following formula: Dry matter partitioning (%) = Individual dry matter/Total dry matter × 100. Prior to harvest five hills (excluding border hills) were selected randomly from each unit plot and uprooted to record data on crop characters and yield components. After sampling, the whole plot was harvested on 2 May 2018 at maturity. The harvested crops of each plot were separately bundled, properly tagged and then brought to the threshing floor. The grains were cleaned, and sun-dried to 14% moisture content. Straws were also dried properly. Finally, grain and straw yields/plots were recorded and converted to t/ha. Harvest index (%) was calculated with the following formula: Harvest index (%) = Grain yield/Biological yield × 100. Protein content (%) was estimated by the Micro-Kjeldahl method (AOAC, 1984) at Professor Muhammad Hossain Central Laboratory, Bangladesh Agricultural University, Mymensingh. Data were analyzed statistically using ANOVA and differences among treatment means were adjudged by DMRT (Gomez and Gomez 1984).

Source of Information: Bangladesh J. Bot. 50(1): 103-111, 2021 (March)

Article Link (Online Journal): DOI: https://doi.org/10.3329/bjb.v50i1.52677

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Results of this study confirmed that 100 kg N/ha × 90 kg K/ha gave a better performance in respect of growth, yield, and grain protein content. Total dry matter partitioning and accumulation were sharply influenced by 150 kg N/ha × 90 kg K/ha interaction. It can be concluded that total dry matter partitioning and accumulation were greatly influenced by 150 kg N/ha × 90 kg K/ha and 100 kg N/ha × 90 kg K/ha interaction appeared as the promising practice in fine aromatic Boro rice (cv. BRRI dhan50) cultivation in terms of yield and grain protein content.

Knowledge Management: Journal