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Impact of Row Arrangements, Age of Tiller Seedlings and Number of Tiller Seedlings Hill/1 on the Growth Performance of Transplanted Aman Rice (cv. Br23)

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

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

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

Abstract/ Executive Summary:

The concentration of nickel was evaluated in wastewater, soil and vegetable (carrot, lettuce, onion, spinach, cabbage, tomato and okra) samples that were collected on seasonal basis from January, 2013 to September 2014 along Kubanni stream channels in Zaria. The results showed nickel concentrations in wastewater were in the range of 7.69 – 38.46 mg/L for the year 2013 and 7.68 – 27.04 mg/L in 2014; 1.92 – 21.37 mg/Kg for the year 2013 and 8.24 – 24.32 mg/Kg in 2014 for the soil while the vegetables had concentrations in the range of 6.97 – 18.79 mg/Kg for the year 2013 and 3.78 – 18.27 mg/Kg in 2014. Statistical analysis revealed no significant difference in nickel levels across the locations and seasons for wastewater, soil and vegetables analyzed. Pearson correlation showed substantial (r = 0.631) relationship between nickel levels in wastewater for the year 2013 and 2014, negative (r = -0.284) relationship was obtained for the soil between these two years whereas substantial (r = 0.634) relationship was obtained for vegetables cultivated in 2013 and that of 2014, respectively. Thus, nickel concentrations obtained in this study was higher than maximum contaminant levels set by Standard Organizations such as WHO and FAO for wastewater whereas the soil and vegetables were less to limits set by these bodies.

Keywords: Days after transplanting, Growth performance, Tiller seedling, Aman rice

Location: Agronomy Field Laboratory, Bangladesh Agricultural University Mymensingh, Bangladesh.

Start Date: 00-01-2013

End Date: 00-09-2014

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To see the effect of row arrangements, age of tiller seedlings and number of tiller seedlings planted hill^-1on the growth of transplanted Aman rice.

Methodology:

The experiment was carried out at the The soil belongs to the Old Brahmaputa Floodplain (AEZ 9) having soil of sandy loam texture with pH 5.9-6.5. A modern high yielding variety of transplanted Aman rice BR23 (Dishari) was used as the test crop in the experiment. The experiment consisted of three levels of row arrangement viz. single row (row spacing 25cm), double row (row spacing 25-10-25cm), triple row (row spacing 25-10-10-25cm), two types of tiller seedlings viz. 25 days and 35 days old, and three levels of tiller seed- lings hill^-1viz. 2, 4 and 6. There were 18 treatment combinations. The experiment was laid out in a three factor Randomized Complete Block Design with three replications. The area of each unit plot was 4.0m × 2.5m. Tillers were separated from 25 and 35 days after transplanting (DAT) from previously transplanted rice field and then transplanted in the main field according to experimental treatments. The experimental plots were fertilized with Urea, Triple Super phosphate (TSP), Muriate of Potash (MoP), Gypsum and Zinc sulphate at the rate of 200, 160, 140, 60 and 10kg ha^-1, respectively. The entire amount of TSP, MoP, Gypsum and Zinc sulphate were applied at final land preparation. Urea was top dressed in three equal installments at 10 days after transplanting, tillering stage and panicle initiation (PI) stage. The crop was properly weeded and irrigated when- ever necessary. 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 was measured from the base of the plant up to the tip of the longest leaf. Plant height, tiller number, total number of leaves, dry weight of stem and dry weight of leaves were recorded four times at 25, 40, 55 and 70 days after transplanting (DAT). For measurement of number of leaves hill^-1, stem dry weight, leaf dry weight and total dry matter, destructive sampling of four randomly selected hills was used. Plant samples were carefully up- rooted each time and separated into leaf and stem. Number of leaves hill^-1 were then counted and dried in the oven at 85± 5°C for 72 hours to a constant weight. Dry weight of leaves and stems were recorded separately with an electrical balance. Dry weight of leaves and stems were altogether regarded as total dry matter. Recorded data were analyzed statistically using Analysis of Variance (ANOVA) technique and the differences among treatment means were adjudged by Duncan’s Multiple Range Test (DMRT) (Gomez and Gomez, 1984).

Source of Information: Archives of Agriculture and Environmental Science 2(3): 152-161 (2017)

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the above results it can be concluded that transplanted Aman rice (cv. BR23) can be grown in single rows for tallest plant, highest tiller production, leaf production and leaf dry matter production hill^-1. In case of total dry matter production cv. BR23 can be grown in triple rows by transplanting 35-day old seedlings with 6 tiller seedlings hill^-1.

Knowledge Management: Journal