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Growth Parameters of Transplant Aman Rice (cv. BRRI Dhan 52) as Influenced by Age of Tiller Seedlings, Number of Tiller Seedlings Hill-1 and Level of Usg

K. S. Rahman
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

S. K. Paul
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. A. R. Sarkar
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. S. Islam
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, Bangladesh to investigate the effect of age of tiller seedlings, number of tiller seedlings hill ^-1and application of urea super granules (USG) on the growth parameters of transplant aman rice cv. BRRI dhan52. The experiment comprised two ages of tiller seedlings viz. 25 and 35 days old, three levels of tiller seedling hill^-1 viz.1, 3 and 5 seedlings hill^-1 and three USG levels viz. 0, 1.8 and 2.7g USG. The experiment was laid out in a Randomized Complete Block Design with three replications. The highest and lowest plant height was found by transplanting 25-day and 35-day old tiller seedlings at all dates of observations. By transplanting 35-day old tiller seedlings total dry matter hill^-1 was found highest at 15DAT and 45 DAT. Total dry matter hill^-1 was the highest in 5 tiller seedlings hill^-1 and it was in lowest in 1 tiller seedling hill^-1. Plant height was the highest in 5 tiller seedlings hill^-1 which was as good as that of 3 tiller seedlings hill^-1 and the lowest one was found in 1 tiller seedling hill^-1 at 15 DAT. The tallest plant and highest total dry matter hill^-1 were observed in 1.8g USG and the lowest one was observed in control treatment. Transplant Aman rice can be grown by transplanting 25-day old tiller seedling, 5 tiller seedlings hill^-1 and by applying 1.8g USG for the highest plant height, more tiller and total dry matter production hill^-1.

Keywords: Growth, Transplant Aman rice, Tiller seedling, USG

Location: Agronomy field laboratory, Bangladesh Agricultural University,Mymensingh

Start Date: 00-07-2012

End Date: 00-12-2012

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

1. To study the influence of age of tiller seedlings, number of tiller seedlings hill^-1 and urea super granules (USG) on growth of transplant aman rice.

Methodology:

The experiment was conducted at the Agronomy field laboratory, Bangladesh Agricultural University, Mymensingh, during the period from July to December 2012 to study the influence of age of tiller seedlings, number of tiller seedlings hill^-1 and urea super granules (USG) on growth of transplant aman rice. The experimental sites belongs to the Sonatola Soil Series of Old Brahmaputra Floodplain (AEZ 9) having non calcareous dark grey floodplain soil. The land was medium high with sandy loam texture having pH 5.9. BRRI dhan52, a high yielding modern rice variety of transplant Aman rice, developed by the Bangladesh Rice Research Institute, has been used as the test crop. The experiment comprised two ages of tiller seedlings viz. 25 and 35 days old, three levels of tiller seedling hill^-1 viz.1, 3 and 5 seedlings hill^-1 and three USG levels viz. 0, 1.8 and 2.7g USG. The experiment was laid out in a Randomized Complete Block Design with three replications. Each block was divided into 18 unit plots where 18 treatment combinations were allocated at random. The distance between the unit plots and block were 0.5m and 1m respectively. There were 54 unit plots in the experiment. The size of unit plot was 4m × 2.5m. The experimental plots were fertilized with triple super phosphate (TSP), muriate of potash (MoP), gypsum and zinc sulphate @ 100, 70, 60, 10 kg ha^-1. The entire amounts of triple super phosphate (TSP), muriate of potash (MoP), and gypsum and zinc sulphate were applied at final land preparation. Nitrogen was applied according to experimental specification in the form of urea super granules (USG) at 10 days after transplanting 4 hill^-1 in every alternate row. Four hills were randomly selected and marked with the bamboo sticks in each unit plot excluding border rows to record the data on plant height and tiller number. Plant height, tiller number, total dry matter were recorded four times at 15, 30, 45, 55 and 75 days after transplanting (DAT). For total dry matter determination, four hills were randomly selected in each plot excluding border rows. The plant samples were packed in labeled brown paper bags and dried in the oven at 80±5°C for 72 hours until constant weight was reached. Recorded data were analyzed statistically using “Analysis of Variance" Technique and the differences among treatment means were adjudged by Duncan’s Multiple Range Test (DMRT).

Source of Information: J. Environ. Sci. & Natural Resources, 6(2):101-108, 2013; ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Tallest plant and total dry matter production hill^-1 could be obtained in transplant Aman rice planted by transplanting 25-day old tiller seedlings with 5 tiller seedlings hill^-1. Application of 1.8g urea super granules appeared as the promising practice in respect of tallest plant and total dry matter production hill^-1.

Knowledge Management: Journal