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Effect of Depth of Planting on the Yield of Rice Culivars

A.U. Sarker
Department of Agronomy, Bangladesh Agricultural University, Mymensinqh

S. M. R. Karim
Department of Agronomy, Bangladesh Agricultural University, Mymensinqh

A. A. Mamun
Department of Agronomy, Bangladesh Agricultural University, Mymensinqh

Abstract/ Executive Summary:

Effect of depth of transplanting in two rice culivars, BAU 63 and BR3, was studied in bore season. Depth of transplanting below 6 cm produced significantly lower grain yield. Shallow transplanting facilitated early maturity of the crop. Cultivars differed significantly in crop duration, BAU 63 matured earlier than BR3. The cultivar and depth of transplanting interaction had significant influence on the plant height and crop duration. BAU 63 produced the tallest plants at 8 cm depth arid it required shortest duration to mature at 4 cm depth.

Keywords: Depth of Planting, Rice Cultivars

Location: Bangladesh Agricultural University Farm, Mymensingh

Start Date: 00-00-1980

End Date: 00-00-1981

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To determine the effect of depth of transplanting on the grain yield and the yield components as affected by the cultivars in Bangladesh.

Methodology:

The experiment was conducted at the Bangladesh Agricultural University Farm, Mymensingh during boro season of 1980-81. The experimental site was medium high land consisting of loamy soil with pH value 6.5- 6.8. The investigation involved - five depths of transplanting-2, 4, 6, 8 and 10 cm; and two cultivars of rice-BAU 63 and BR3. BR3 is a photo-insensitive variety developed by Bangladesh Rice Research Institute (BRRI) and BAU 63 is a new boro rice which is released by Bangladesh Agricultural University (BAU) Mymensingh. Seedlings were raised in nursery bed in wet method. Transplantation was done when the seedlings were 30 days old in well puddled land. Bamboo stick graded at different lengths inserted into the puddled soil along with the seedlings to maintain the depth of transplanting. The plant spacing was 20 cm x 15 cm. Two seedlings were placed in a hill. The land was fertilized with urea triple superphosphate and muriate of potash at the rates of 230,138 and 92 kg/ha. respectively. Whole amount of phosphate and potash. and 50% urea were applied during final land preparation and 50% urea was applied as top dressing in two splits-one at maximum tillering stage. another at panicle initiation stage. Two to three inches of standing water was maintained upto pre-ripening stage. Two weeding were done during the entire growth period. The crop was prevented from the attack of insect-pest by applying diazinon at the rate of 15.6 g./plot at an interval of 20 days. The experiment was laid out in split plot design with cultivars in main plots and depths of transplanting in sub-plots and were replicated three times.

Source of Information: Bangladesh J. Agril. Sci. 13(2): 57-61: 1986

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

From this study it is revealed that the seedlings of BR3 and BAU 63 can be transplanted in boro season at a maximum depth of 6 cm without any yield loss, that the shallow transplanting of rice seedlings facilitates early maturity of the crop, and that in boro season BAU 63 matures earlier than BR3 at BAU condition.

Knowledge Management: Journal