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

Response of Nitrogen and Plant Spacing of Transplanted Aman Rice

K. M . SALAHUDDIN
Assistant Editor
BARI, Gazipur

S. H. CHOWHDURY
Professor
Dept. of Agronomy, BAU, Mymensingh

S. MUNIRA
Lecturer
SAU, Dhaka

M. M . ISLAM
Lecturer
BSMRAU, Gazipur

S. PARVIN
Scientific Officer (T&C)
BARI, Gazipur, Bangladesh.

Abstract/ Executive Summary:

An experiment was conducted during July-December 2001 at the Agronomy field laboratory, Bangladesh Agricultural University, Mymensingh to study the effect of nitrogen levels and plant spacing on the yield and yield contributing characters of transplant Aman rice (var. BRRI Dhan 3 L). Five levels of nitrogen (0, 50, 100, 15O, 200 kg N/ha) and three spacing (25 cm x 20 cm, 25 cm x 15 cm, 25 cm x 10 cm) were included as treatment variables. A gradual increase in panicle length (24.50 cm), grains/panicle 110) and grain yield (4.91 t/ha) were observed with the increase in nitrogen levels upto 150 kg/ha and declined thereafter. Thousand-grain weight was not significantly influenced by application of different levels of nitrogen. The maximum grain yield (4.22 t/ha) was observed at the spacing 25 cm x 10 cm closely followed by 25 cm x 15 cm (4.21 t/ha). Wider spacing (25 cm x 10 cm) produced the tallest plant (1 08.38 cm), but significantly highest tilers/hill (8.06) and grains/panicle was recorded from (25 cm x 20 cm). Plant spacing had also no significant effect on 1000-grain weight. The interaction effects of nitrogen and plant spacing was significant in panicle length, grains/panicle, and grain yield. The higher grain yield (5.00 t/ha) was recorded from the treatment combination of 150 kg N/ha with 25 cm x 15 cm spacing, but statistically identical to same N dose with other two spacing. Response of grain yield to added N was quadratic. The optimum doses were found to be 132 kg N/ha for 25 cm x 20 cm, 119 kg N/ha for 25 cm, and 177 kg N/ha for 25 cm x 10 cm spacing, yielding 4.38, 4.63 and 4.75 t/ha, respectively.

Keywords: Nitrogen, Plant spacing, Aman rice.

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-07-2001

End Date: 00-12-2001

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To investigate the yield response of T. Aman rice in relation to nitrogen levels and plant spacing

Methodology:

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during the period from July to December 2001. The treatments comprised of five levels of nitrogen (0, 50, 100, 150 and, 200 kg N/ha) and three plant spacings (25 cm x 20 cm, 25 cm x 15 cm, and 25 cm x 10 cm). The experiment was laid out in a factorial randomized complete block design with three replications. The size of unit plot was 4.0 m x 2.5 m. Rice seeds (var. BRRI dhan21) were raised in well prepared seed bed. Before raising seeds in the nursery, seeds were water soaked for 24 hours and these were kept in jute bags in dark conditions. After sprouting, the seeds were sown in wet seed bed on 19 July 2001. Thirty-five day old seedlings were uprooted carefully from the nursery and transplanted (2-3 seedlings/hill) on the well puddled experimental plots on 6 August 2001. Fertilizers were applied @ I 00, 70, 60, and I 0 kg/ha of P, K, S, and Zn through triple super phosphate (TSP), muriate of potash (MoP), gypsum, and zinc sulphate (ZnS0₄). The whole amount of TSP, MoP, gypsum, and ZnS0₄ were applied at the time of final land preparation. The whole amount of urea was top-drssed in 3 equal installments at 15, 30, and 50 days after transplants. Irrigation along with other intercultural operations were done as and when required. The crop of individual plots were separately harvested at full maturity on 20 November 2001. Data on plant height, number of total and effective tillers/hill, panicle length, number of grains/panicle, and weight of I 000-grain were collected from five sample plants of each plot. The grain weight for each plot were recorded after proper drying in sun. The collected data were statistically analyzed and mean differences was compared by Duncan's New Multiple Range Test (DMRT).

Source of Information: Bangladesh J. Agril. Res. 34(2): 279-285, June 2009 ISSN 0258-7122

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The result of the study realized that 150 kg t/ha with spacing 25 cm x 15 cm gave higher grain yield (5.0 t/ha) but from regression analysis also showed similar result of same spacing with 119 kg/ha. So, optimum grain yield could be obtained from spacing 25 cm x 15 cm with N level varied from 119 to 150 kg/ha depending upon soil fertility.

Knowledge Management: Journal