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Tillering Behavior of Hybrid Boro Rice (heera 4) as Responded by Nitrogen and Methods of Weeding

Shimul Chandra Sarker
Department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka-1207

Rajesh Chakraborty
Department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka-1207

Md. Arif Hussain
Department of Genetics and plant Breeding, Sher-e-Bangla Agricultural University, Dhaka- 1207

Md. Saiful Islam
slamic Foundation, Agargaon, Dhaka-1207

Md.Quamruzzaman
Department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka-1207

Abstract/ Executive Summary:

Experiment was carried out at the Agronomy Field of Sher-e-Bangla Agricultural University, Dhaka during the period from December, 2012 to May, 2013 to investigate the response of different levels of nitrogen and methods of weeding on the tillering behavior of hybrid boro rice (Heera 4). The treatments consisted of four nitrogen levels viz., N₀ = 0 kg N ha^-1, N₁ = Urea super granules (2.7 g) @ 75 kg N ha^-1, N₂ = 140 kg N ha^-1, N₃ = 180 kg N ha^-1 and five different weed control methods viz., W₀ = No weeding (Control), W₁= One weeding (30 days after transplanting), W₂= Two weeding (30 DAT & 50 DAT), W₃= Sunrice 50WG at recommended dose (100g ha-1), W₄ = Topstar 80WG at the recommended dose (@80g ha^-1). The experiment was laid out in a split plot design with three replications having nitrogen doses in the main plots, weed control in the sub plots. Nitrogen and weed control had significant response on total tiller production of hybrid rice. From the economic point of view, significant highest (19 at 75 DAT) tiller was found from the combination of USG with Sunrice150.

Keywords: Nitrogen Levels, Methods of Weeding and Tillering behavior

Location: Agronomy Field of Sher-e-Bangla Agricultural University, Dhaka

Start Date: 00-12-2012

End Date: 00-05-2013

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To investigate the response of different levels of nitrogen and methods of weeding on the tillering behavior of hybrid boro rice (Heera 4)

Methodology:

Experiment was carried out at the Agronomy field ( 23⁰74/N latitude and 90⁰35/E longitude with an elevation of 8.2 meter from sea level under Madhupur Tract-AEZ 28), Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from December, 2012 to May, 2013. The planting crop was rice variety (hybrid heera-4). The experiment consisted of two factors, namely factor A: Nitrogen (level 4) viz., N₀ = 0 kg N ha^-1, N₁ = Urea super granules (2.7 g) @ 75 kg N ha^-1, N₂ = 140 kg N ha^-1 and N₃ = 180 kg N ha-1 and factor B: weed control method (level 5) viz., W₀ = No weeding (Control), W₁= One weeding (30 Days after transplanting), W₂= Two weeding (30 DAT and 50 DAT), W₃= Sunrice 150 WG at recommended dose (100g ha^-1) and W4 = Topstar 80WG at the recommended dose (80g ha^-1). Thirty days old seedlings were uprooted and transplanted on well puddled plots. The experiment was laid out in a split plot design with three replications. The experimental plots were fertilized with P, K, Zn and S @ 140,134.7, 7.5, 60 kg ha^-1 in the form of triple super phosphate (TSP), muriate of potash (MOP), zinc sulphate and gypsum(CaSO₄.2H₂O), respectively as basal. The USG weighing 2.7 g each were placed at 5-10 cm soil depth at 10 DAT in the center of four hills in alternate rows @ 1 granule in one spot to supply 75 kg N ha^-1. Nitrogen in the form of USG and prilled urea (PU) was given following treatment levels. Split application of nitrogen was done only for PU at 10, 35 and 55 DAT. Gap filling, weeding, application of irrigation water and plant protection measures were taken properly as per when needed. From the present study data on total tillers at different days after transplanting (DAT) were collected. Data were compiled and analyzed statistically by using a computer package program MSTAT-C and the mean differences were compared by Duncan’s Multiple Range Test (DMRT).

Source of Information: AMERICAN RESEARCH THOUGHTS- Volume 1, Issue 5, (2015)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the economic point of view, production of hybrid boro rice (HEERA 4) under present study, it may be concluded that by applying nitrogen and weed control methods, it is possible to enhance the total tillers of rice. Significant highest (19 at 75 DAT) tiller was found from the combination of USG with Sunrice 150.

Knowledge Management: Journal