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Relaying of Sunflower by Dibbling Method in T. Aman Rice at Variable Plant Population in the Saline Areas of Bangladesh

Md. Atikur Rahman
SO
ARS, Benarpota, Satkhira

F. Ahmed
SSO
Agronomy Division, Gazipur

Abstract/ Executive Summary:

An experiment was conducted at the Agricultural Research Station (ARS), BARI, Benarpota, Satkhira during the rabi season of 2012-13 to find out optimum plant population for higher yield. There were four treatments combinations viz. T1 = One row sunflower (plant to plant 15 cm) alternate with 3-row rice T2 = One row sunflower (plant to plant 25 cm) alternate with 3-row rice, T3 = One row sunflower (plant to plant 15 cm) alternate with 4- row rice and T4 = One row sunflower (plant to plant 25cm) alternate with 4-row rice. Among the treatments T1 gave the highest yield (1.36 t/ha) and the lowest yield was found in T4 (0.85 t/ha) which was inferior to all other treatments. Due to relaying of sunflower there were no negative effect on rice (T1) yield (4.65 t/ha) which was comparable with normal rice yield. The lowest level (3.25 ds/m) of soil salinity was recorded in the planting time and the highest level of salinity (8.75 ds/m) was recorded in the harvesting stage.

Keywords: Relaying cropping, Sunflower, Dibbling method, T.Aman rice, Plant population, Saline areas

Location: ARS, Benarpota, Satkhira

Start Date: 00-00-2012

End Date: 00-00-2013

Program Area: Farming System

Commodity: Sunflower, Rice

Objectives:

To evaluate the feasibility of relaying sunflower in T.aman rice
To find out suitable plant population for higher yield.

Methodology:

The experiment was conducted at the Agricultural Research Station (ARS), BARI, Benarpota, Satkhira during the rabi season of 2012-13. The variety Binadhan-7 rice and BARI Surjomukhi-2 for sunflower were used as test crops. There were four treatment combinations viz. T1 = One row sunflower (plant to plant 15 cm) alternate with 3-row rice T2 = One row sunflower (plant to plant 25 cm) alternate with 3-row rice, T3 = One row sunflower (plant to plant 15 cm) alternate with 4- row rice and T4 = One row sunflower (plant to plant 25cm) alternate with 4-row rice in saline area following RCB design with three replications. Unit plot size was 4.5 m X 5 m. Seeds were sown on 01 January 2013. The experimental plots were fertilized with 105-30-60-30-1.4-0.6 kg/ha of N P K S Zn B, respectively. Half of the N and all other fertilizer were applied after emergence of sunflower. Remaining N was applied in 2 equals split at 20-25 DAS and 40-45 DAS (before flowering). Three irrigations were applied during the crop growth period. All the intercultural operations were done when necessary. Data on yield and yield attributes were collected and analyzed statistically using MSTAT-C program.

Source of Information: Annual Report, Agronomy Division 2012-2013, BARI

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) : 25,000/-

Achievement/Findings:

Among the treatments T1 gave the highest yield (1.36 t/ha) and the lowest yield was found in T4 (0.85 t/ha) which was inferior to all other treatments. Due to relaying of sunflower there were no negative effect on rice (T1) yield (4.65 t/ha) which was comparable with normal rice yield. The lowest level (3.25 ds/m) of soil salinity was recorded in the planting time and the highest level of salinity (8.75 ds/m) was recorded in the harvesting stage. Relay cropping of sunflower with T. aman would be possible and 3 row rice and one row Sunflower (plant to plant distance 15 cm) would be optimum in saline areas to have a good sunflower yield.

Knowledge Management: Report/Proceedings