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Growth and Yield Performance of Some Selected Rice Lines Under Different Salinity Regimes

Dr. Md. Tariqul Islam
Principal Scientific Officer and Head
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

M. A. Salam
Ex-Director (Research)
Bangladesh Institute of Nuclear Agriculture, Mymensingh

Abstract/ Executive Summary:

A field experiment with six rice lines (BINA-3, BINA-13, BINA-19, BINA-28, BINA-163 and Iratom-24) was carried out at Satkhira, in Boro season, 1992. The treatments were: 100% shallow tube well water, 75% shallow + 25% river saline water, 50% shallow + 50% river water and; 100% river water. BINA-19 and Iratom-24 were better than the others in respect of biomass production at 57 days after transplanting. At maturity, BINA-163 produced the highest biomass followed by BINA-19, Iratom-24 and BINA-13 under salinity stress. Gradual decrease of biomass with increased salinity level was observed in most of the lines. Under salinity stress, BINA-19 showed the best yield performance followed by BINA-13 and Iratom-24. In a pot experiment at BINA, Pokkali, BINA-19, BINA-13 and Iratom-24 were grown in nutrient solutions of different salinity levels (control, 0.9 and 1.2 NaCl). The biomass of BINA-19 was not affected with increased salinity. The biomass of Pokkali and Iratom-24 decreased with the increase in salinity.

Keywords: Rice, Salinity, Growth and Yield

Location: Satkhira dirtrict

Start Date: 01-12-1991

End Date: 15-04-1992

Program Area: Variety and Species

Commodity: Rice

Objectives:

The objective of the study was to evaluate rice lines under salinity.

Methodology:

A field experiment at Satkhira, was carried out with BINA-3, BINA-13, BINA-19, BINA-28 and BINA-163 and Iratom-24 under varied salinity regimes during Boro season, 1992. The treatments were: 100% shallow tube well water (So), 75% shallow +25% river saline water (S₁), 50% shallow + 50% river water (S₂), and 100% river water (S₃). The design of the experiment was split plot with 4 replications. Salinity treatments were in the main plot and the lines were in the sub-plot. The unit plot size was 1m x 0.5m. Urea, TSP and MP at the rate of 80 kg N, 20 kg P₂O₅ and 20 kg K₂O per hectare were applied. The treatments were applied at tillering stage and continued to crop maturity. Data on TDM and yield were recorded. An experiment in plastic pots using nutrient solution with some mutant lines/varieties (Pokkali, BINA-19, BINA-13 and Iratom-24) were carried out in Boro season, 1992. The salinity treatments were control, 0.9 and 1.2% NaCl. The concentration of the nutrients was 3 mM KNO₃; 2 mM Ca(NO₃); 1 mM MgSO₄,7HA; 0.1 mM FeEDTA; 0.5 mM (NH4)₂HPO₄, 7.71 µM H₃B0₃; 3.17, µM MnCl₂; 0.55 µM ZnSO₄, 7H₂O; 0.31µM CuSO₄; 0.13µM Co(N0₃)₂; 0.97 µM Na₂MoO₄ (Munns, 1985). Each pot contained 4.5 liter nutrient solution in which 2 plants were grown. The plants were supported by the granules kept in the porous pots placed on the solution of plastic pots. It was a 2 factor experiment in CRD with 4 replications. The solution was changed once a week and the volume of solution was maintained by adding water 2-3 times in a week. According to the treatments, the measured amount of NaCl was applied to the solution at the tillering stage and was continued to crop maturity.

Source of Information: Bangladesh J. Training and Devt. Vol. 9, No. 2, July 1996: 53-56

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

BINA-19 and Iratom-24 were better than the others in respect of biomass production at 57 days after transplanting. At maturity, BINA-163 produced the highest biomass followed by BINA-19, Iratom-24 and BINA-13 under salinity stress. Gradual decrease of biomass with increased salinity level was observed in most of the lines. Under salinity stress, BINA-19 showed the best yield performance followed by BINA-13 and Iratom-24. In a pot experiment at BINA, Pokkali, BINA-19, BINA-13 and Iratom-24 were grown in nutrient solutions of different salinity levels (control, 0.9 and 1.2 NaCl). The biomass of BINA-19 was not affected with increased salinity. The biomass of Pokkali and Iratom-24 decreased with the increase in salinity.

Knowledge Management: Journal