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Effect of Age of Seedlings on the Yield of Transplant Aman Cultlvars

M. A. Islam
Department of Agronomy, Bangladesh Agricultural University, Mymensingh, Bangladesb. Received on 20-5-8O.

J. V. Ahmed
Department of Agronomy, Bangladesh Agricultural University, Mymensingh, Bangladesb. Received on 20-5-8O.

Abstract/ Executive Summary:

The four cultivars of rice under study- Nigersail, Latisail IR5 and IR20 were significantly different in their performance. The two exotic cultivars of rice-IR5 and IR20 independently gave significantly higher yield of grains than either of the. other two local cutivars; and of the two exotic cultivars, IR8 was higher yielder (5188 kgjha). though statistically identical with IR20 ( 5022 kgj ha ). Of ages of seedlings under study-20, 30 and 40 days, 30.day old seedlings gave significantly highest yield ( 4912 kgjha) of grains.

Keywords: Effect, Age of seedlings, Yield,Transplanted aman

Location: Bangladesh Agricultural University Farm, Mymensingh.

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To evaluate the effect of different -ages of seedlings on the yield and yield contributing characters of four transplant aman cultivars under Bangladesh conditions.

Methodology:

The present experiment was conducted at the Bangladesh Agricultural University Farm, Mymensingh, from .July to December 1974 on sandy loam soil of a medium high land belonging to the Brahmaputra Alluvial Soil 'Tract. The treatments under investigation were : A. cultivars- i) Nigersail ii) Latisail iii) IR5 iv) IR20 B. Ages of seedlings- i) 20 day old ii) 30 day old Hi) 40 day old The experiment was laid out in split -plot design in which cultivars were :andomly distributed in the main plots and the ages in the unit plots. The experiment was replicated four times.The area of each unit plot was Ih thof a hectare.A basal dose of 85 kg of nitrogen,67 kg of phosphorus and 42 kg of potassium were applied per hectare inthe form of urea, triple superphosphateand muriate of potash. Of these, 50%
N, 100% P and 100% K Were applied in the unit plots one day before transplanting. The remaining 50% of N was applied as top dressing in twoinstalments, one at maximum tillering stage and the other at the time of panicle initiation.

Source of Information: Bangladesh J. Agril. Sci. 8 (2) : 175-179 : 1981 ISSN 0379-4296

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The two exotic cultivars of rice-IR5 and IR20 independently gave significantly higher yield of grains than either of the. other two local cutivars; and of the two exotic cultivars, IR5 was higher yielder (5188 kgjha). though statistically identical with IR20 ( 5022 kg/ ha ). Of ages of seedlings under study-20, 30 and 40 days, 30.day old seedlings gave significantly highest yield ( 4912 kg/ha) of grains.

Knowledge Management: Journal