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Effect of Different Rates of Sulphur on the Yield and Yield Attributes of Rice in Old Brahmaputra Floodplain Soil

M. N. Rahman
Scientific Officer
Soil Science Division, BARI, Joydebpur, Gazipur

M. B. Islam
Chief Scientific Officer
OFRD Division, BARI, Joydebpur, Gazipur

S. M. Sayem
Lecturer
Dept. of Soil Science, Hajee Danesh Science and Technology University, Dinajpur

M.A. Rahman
Scientific Officer
Soil Science Division, BARI, Joydebpur, Gazipur

M. M. Masud
Scientific Officer
Soil Science Division, BARI, Joydebpur, Gazipur

Abstract/ Executive Summary:

A field experiment was conducted on a non-calcareous dark gray floodplain soil (Sonatola series) of BAU farm, Mymensingh during Boro season of 2004 using rice (cv. BRRI dhan29) as a test crop. The soil was silt loam having pH 6.8, organic matter 1.62%, available Sulphur (S) 9 ppm and available Phosphorus (P) 7.62 ppm. There where five treatments viz. T₀ (control), T₁ (10kg S/ha), T₂ (20kg S/ha), T₃ (40kg S/ha) and T₄ (60kg S/ha). A randomized complete block design was followed with four replications. All plots received an equal dose of N, P, K and Zn. The application of S had a significant positive effect on tillers/hill, plant height, panicle length and grains/panicle. The highest grain (5.81t /ha), and straw (7.38 t/ha) yields were recorded in the T2 (20kg S/ha). The T₀ (control) had the lowest grain yield of 4.38 t/ha as well as the lowest straw yield of 5.43 t/ha. Regression analysis showed that the optimum dose of S was 32.89 kg/ha and the economic dose of S was 31.59 kg/ha for maximizing the yield. Overall results indicate that application of S fertilizer at a recommended rate (20kg S/ha) might be necessary for obtaining higher grain yield as well as straw yield of Boro rice (cv. BRRI dhan29) in BAU farm and also in the areas having similar edaphic factors.

Keywords: Sulphur effect, Yield attributes, Floodplain soil

Location: Soil Science Field Laboratory of Bangladesh Agricultural University (BAU) Mymensingh

Start Date: 00-11-2003

End Date: 00-05-2004

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer

Objectives:

To study the effect of different levels of S on the yield and yield attributes of rice in old Brahmaputra floodplain soil

Methodology:

The experiment was carried out during Boro season 2003-2004 at the Soil Science Field Laboratory of Bangladesh Agricultural University (BAU) Mymensingh. The experimental soil was Sonatala silt loam, a member of hyperthermic aeric haplaquept. The physical and chemical characterization of the initial soil were done. The experiment was laid out in a Randomized Complete Block Design (RCBD). The unit plot size was 4 m × 3 m. Five treatments 0, 10, 20, 40 and 60 Kg S /ha were used in the experiment. Treatments were randomly distributed within the blocks. The variety of the rice crop was BRRI dhan29. Fertilizer such as urea, TSP, MP, gypsum and ZnO were used as sources for N, P, K, S and Zn, respectively. One-third dose of urea and the full dose of all other fertilizers were applied as basal to the individual plots during final land preparation. The fertilizers were incorporated into soil by hand. As the amount of ZnO for a unit plot was small, the fertilizer was mixed with ground dry soil before application. The second split of urea was applied 35 days after transplanting i.e. at maximum tillering stage and the third split 60 days after transplanting i.e. at panicle initiation stage. Intercultural operations were done for ensuing and maintaining the normal growth of the crop. The crop was harvested at full maturity on May 23, 2004. The harvested crop of each plot was bundled separately and brought to the threshing floor. Grain and straw yields were recorded plot wise and expressed as t/ha on 14% moisture basis. Plant data were recorded for yield and yield components of rice. The yield components were of plant height, number of effective tillers per hill, panicle length, filled grains in panicle and thousand-grain weight.

Source of Information: J. Soil. Nature. 1(1): 22-26, (2007)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Application of S fertilizer at a recommended rate (20kg S/ha) might be necessary for obtaining higher grain yield as well as straw yield of Boro rice (cv. BRRI dhan29) in BAU farm and also in the areas having similar edaphic factors.

Knowledge Management: Journal