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Productivity of Sunflower in Relation to Planting Geometry and Nitrogen Fertilization

Sufia Begum
SO
Agronomy Division, Gazipur

M. Nurul Islam
SO
Agronomy Division, Gazipur

Abstract/ Executive Summary:

Field experiments were conducted at Joydebpur, Ishurdi and Jamalpur during rabi season of 2002-2003 to increase or improve per plant productivity in relation to N and planting geometry for maximization yield. Three planting geometry (Squar planting i.e. 39 cm x 39 cm, Recteangular planting i.e. 60 cm x 25 cm and Normal planting i.e. 50 cm x 30 cm) and four nitrogen rates (0, 60, 120 and 180 kg/ha) formed the treatment variables. Seeds of sunflower (cv. Kironi) were sown on November 26 at Joydebpur, November 17 at Ishurdi December 6, 2002 at Jumulpur. Results of different locations showed that seed yield differed due to variations of planting geometry. Squar planting at Joydebpur (1522 kg/ha) followed normal planting (1459 kg/ha), normal planting at Ishurdi (1798 kg/ha) and Jamalpur (1488 kg/ha) produced the highest yield. Averaged over locations, significantly the highest seed yield (1854 kg/ha) was obtained from 120 kg N/ha. However, application of 120 kg N/ha was optimum for higher per plant yield at all locations with normal planting geometry.

Keywords: Productivity, Sulflower, Planting geometry, Nitrogen fertilization

Location: Joydebpur, RARS, Ishurdi and RARs, Jamalpur

Start Date: 26-11-2002

End Date: 23-03-2003

Program Area: Crop-Soil-Water Management

Commodity: Sunflower

Objectives:

To increase or improve per plant productivity in relation to N and planting geometry for maximization yield

Methodology:

The experiment was conducted at BARI Central farm, Joydebpur, RARS Ishurdi and Jamalpur during rabi season of 2002-2003.The treatments were three planting geometry, viz. square planting (39 cm x 39 cm, rectangular planting (60 cm x 25 cm) and normal planting (50 cm x 30 cm) and four nitrogen levels Viz. 0, 60, 120 and 180 kg/ha. These treatments were arranged in a split plot design with three replications. Planting geometry were placed in main plot and nitrogen levels at sub-plot. All the planting geometry had equal plant population (66,666 plants/ha). The unit plot size was 4m x 5m. Seeds of sunflower (CV. Kirani) were sown on 26 November(Joydebpur), 17 November (Ishurdi) and 6 December, 2002 (Jamalpur). A uniform dose of 90 kg P₂O₅ 90 kg K₂O 20 kg S and 2 kg B/ha were applied as basal. N was applied as per treatment. Half amount of N was use as starter dose. Remaining N was top-dressed in two equal splits at-25 and 45 DAE. Data on yield and yield contributing characters were recorded and analyzed statistically.

Source of Information: Annual Report, Agronomy Division 2002-2003, BARI

Article Link (Online Journal):

Funding Source:

1. Asian Development Bank

Budget: 10,000/-

Total Budget (Tk.) : 10,000/-

Achievement/Findings:

Averaged over locations, significantly the highest seed yield (1854 kg/ha) was obtained from 120 kg N/ha. However, application of 120 kg N/ha was optimum for higher per plant yield at all locations with normal planting geometry.

Knowledge Management: Report/Proceedings