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Varietal Performance of Transplant Aman Rice Under Differnt Hill Densities

M.A.T. SOHEL
Scientific Officer
Bangladesh Sugarcane Research lnstiute, lshurdi, Pabna

M.A.B. SIDDIQUE
Lecturer
ATI, Gazipur

M. ASADUZZAMAN
Scientific Officer (Agronomy)
Regional Agricultural Reaearch Station, Jamalpur

M .N. ALAM
Scientific Officer
Bangladesh Sugarcane Research lnstiute, lshurdi, Pabna

M. M. KARIM
Professor
Dept. of Agronomy, BAU, Mymensingh, Bangladesh.

Abstract/ Executive Summary:

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from July to December 2004 to evaluate the effect of hill spacing on the performance of BRRI dhan40 and BRRI dhan41 as Transplant aman crop. The experiment consisted of five hill spacings viz., 5cm. 10 cm, 15 cm, and 25 cm where row to row spacing of 25 cm was kept constant for all treatments. The experiment was laid out in randomized complete block design with four replications. The 25 cm x 5 cm hill spacing produced the tallest plant, highest total number of tillers/hill, bearing tillers/hill lowest number of non-hearing tillers/hill, grain yield and harvest index, while 25 cm x 5 cm hill spacing produced the highest number of sterile spikelets/panicle, straw yield and biological yield. BRRI dhan41 produced higher grain yield (4.7 t/ha) which was the contribution of higher number of grains/panicle and heavier grain weight. Lower yield (4.51 t/ha) was recorded in BRRI dhan40.

Keywords: Varietal performance, T. aman rice, Hill density

Location: Bangladesh Agricultural University, Mymensingh

Start Date: 00-07-2004

End Date: 00-12-2004

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To observe the effect of interaction between hill spacing and variety in order to improve their yield and yield components.

Methodology:

The experiment was conducted at the Agronomy Field Laboratory, BAU Mymensingh during the period from July to December 2004 to study the effect of hill spacing on the yield and yield contributing characters of T. aman rice. The experiment was laid out in a randomized complete block design with four replications. Two varieties viz., BRRI dhan40 and BRRI dhan41 and five hill spacings viz., 5 cm, 10 cm, 15 cm, 20cm, and 25 cm where the row spacing of 25 cm was kept constant for all treatments were included in the study. The unit plot size vas 4.0 m x 2.5 m. At the time of final land preparation, each unit plot was fertilized with urea, triple super phosphate, muriate of potash. gypsum, and zinc sulphate to provide N, P, K, S, and Zn at the rate of 132.5, 51.25, 60, 33.75, and 5 kg/ha. respectively. Urea was top-dressed in three equal splits at 15, 30, and 45 days after transplanting. Thirty-day old seedlings were transplanted at the rate of two seedlings/hill on 2 August 2004. Cultural operations were done as and when necessary . The crop was harvested on 10 December 2004. The plants of outer row and the extreme ends of the middle rows were excluded to avoid border effect. Five hills were randomly selected from each unit plot prior to harvest for recording data on plant height, total tillers/hill, bearing tillers/hill , non-baring tillers/hill, panicle length, grains/panicle, sterile spikelets/panicle, and 1000-grain weight. Grain yield, straw yield, and harvest index were recorded at harvest. The grains were cleaned and finally the weight was adjusted to a moisture content of 14%. The straws were sun dried and the yield of grain and straw/plot were converted to t/ha. Collected data were analyzed statistically following ANOVA technique and the mean differences were adjudged by Duncan's multiple Range lest (Gomez and Gomez, 1984).

Source of Information: Bangladesh J. Agril. Res. 34( I) : 33-39, March 2009

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The 25 cm x 5 cm hill spacing produced the tallest plant, highest total number of tillers/hill, bearing tillers/hill, lowest number of non-hearing tillers/hill, grain yield and harvest index, while 25 cm x 5 cm hill spacing produced the highest number of sterile spikelets/panicle, straw yield and biological yield. BRRI dhan41 produced higher grain yield (4.7 t/ha). Lower yield (4.51 t/ha) was recorded in BRRI dhan40.

Knowledge Management: Journal