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Growth and Yield Performance of Tidal Local Aman Rice as Influenced by Usg Application at Non Tidal Condition

S. M. S. Abedin
Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706.

M. A. Mannan
Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706.

M. A. A. Mamun
Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706.

G. K. M. M. Rahman
Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706.

A. J. Mridha
Bangladesh Rice Research Institute, Gazipur-1701.

Abstract/ Executive Summary:

An experiment was carried out at research field of Bangladesh Rice Research Institute, Gazipur to evaluate the performance of tidal local aman rice as influenced by urea super granule (USG) at non-tidal condition. Four tidal local aman varieties such as Sadamota, Razashail, Kutiagoni and Kalagura were used as planting materials. Nitrogen was applied as USG (1.8g) at 10 days after transplanting (DAT), 25 DAT, before panicle initiation (BPI) stage (date of PI stage of these 4 varieties were identified from previous experience) and no nitrogen (control). The experiment was laid out in a split-plot design where varieties in main plot and USG in sub-plot with three replications. Varietals response was significant on plant height, effective tillers hill^-1, grains panicle^-1 and grain yield. All the yield and yield components were influenced significantly by the time of USG application. Higher dry matter was produced by all the varieties when USG was applied at early growth stage (10 to 25 DAT) but crop lodges at milking stage due to more vegetative growth resulting increases sterility, decreases grain fertility and yield. On the other hand, when USG was applied at BPI stage grain fertility and yield were increased. The highest grain yield (3.51 t ha^-1) was recorded from Kalagura when USG applied before panicle initiation stage. So, application of USG at BPI stage in local aman rice in non-tidal condition increased yield resulting higher gross and net return in all varieties.

Keywords: Grain yield, Local aman, Tidal area, Urea super granule

Location: Agronomy field of Bangladesh Rice Research Institute, Gazipur

Start Date: 00-00-2014

End Date: 00-00-2014

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

1. To evaluate the performance of local aman rice varieties in respect of yield and nitrogen use efficiency and

2. To find out suitable time of nitrogen application in local aman rice in agro-climate condition of Gazipur.

Methodology:

The experiment was carried out at Agronomy field of Bangladesh Rice Research Institute, Gazipur during the Aman season, 2014. The soil of BRRI farm was clay loam of shallow brown terrace under Madhupur tract (AEZ 28), with pH 6.2 and low in organic matter (1.2%).The experimental field was ploughed with the help of power tiller followed by laddering to get a well puddled condition. A blanket dose of 16, 35, 10 and 1.8 kg ha^-1 of P, K, S and Zn were applied as triple super phosphate, muriate of potash, gypsum and zinc sulphate, respectively at final land preparation. The treatments were, Factor A: Local aman varieties, i. Sadamota, ii. Razashail, iii. Kutiagoni and iv. Kalagura; Factor B: Time of USG (1.8g) application at i. 10 DAT, ii. 25 DAT, iii. Before Panicle Initiation (BPI) stage and iv. No nitrogen (control).The experiment was laid out in split-plot design assisning varieties in main plot and USG in sub-plot with three replications.Thirty-days-old seedlings were transplanted maintaining 30 cm 30 cm spacing on 7^th August, 2014. Intercultural operation like gap filling was done on 15^th August, 2014. Two hand weeding was done on 22^nd August and 10^th September, 2014. Irrigation water was applied as and when necessary. Data on tillering dynamics, SPAD value, dry matter production, yield and yield components were recorded following standard procedure. Grain yield was adjusted to 14% moisture content. Agronomic efficiency, partial factor productivity and grain yield efficiency index were calculated. Data gathered on different parameters were statistically analyzed and the mean different among the treatments were compared by least significance difference (LSD) test at 5% level of significance.

Source of Information: Bangladesh Agron. J. 2015, 18(1): 71-80

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the findings of this experiment it may be concluded that the var. Kalagura was found most efficient varieties in respect of yield and nitrogen use efficiency. Application of N through USG before panicle initial stage increased grain fertility and yield. So, application of USG before panicle initiation stage might be recommended for increased yield and higher net return in cultivating local aman rice varieties.

Knowledge Management: Journal