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Effect of Number of Seedlings Per Hill and Fertilizer Dose on Yield and Yield Attributes of Advanced Line and Variety of Rice

Z. Akhter
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202

M.S.U. Bhuiya
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202

M.N.H. Miah
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202

Abstract/ Executive Summary:

A field experiment was conducted at the experimental field of Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh, during July to December 2008 following a randomized complete block design with three replications, to evaluate the effect of number of seedlings hill-1 and fertilizer dose on the yield and yield attributes of two released aman varieties and an advance rice line. The experiment consisted of three varieties viz., Binadhan-7 (V₁), advanced rice line YS-1281 (V₂) and BRRI dhan32 (V₃); three levels of seedlings hill^-1 viz., two (S₁), four (S₂) and six (S₃) with two fertilizer doses viz., BARC (F₁) and BRRI recommended fertilizer dose (F₂). It was evident from the results that significant variations were observed in all varieties in respect of all growth parameters, yield and yield attributes. BRRI dhan32 produced the maximum panicle length (23.8 cm), grains panicle^-1(96.1), weight of 1000-grain (24.96 g), grain yield (6.06 t ha^-1) and straw yield (7.32 t ha^-1). Number of seedlings hill^-1 with fertilizer dose significantly influenced all the characters except weight of 1000-grain and harvest index at maturity. Both grain (6.46 t ha^-1) and straw yield (6.57 t ha^-1) was highest with the treatment of four seedlings hill^-1 and BRRI recommended fertilizer dose and the lowest grain (5.30 t ha^-1) and straw yield (5.71 t ha^-1) was obtained from two seedlings hill^-1 with BRRI recommended fertilizer dose and four seedlings hill^-1 with BARC recommended fertilizer dose, respectively. Results revealed that among line/varieties, the highest grain yield (7.40 t ha^-1) was obtained from BRRI dhan32 when transplanted with 4 seedlings hill^-1 along with BRRI recommended fertilizer dose and the lowest grain yield (5.03 t ha^-1) was obtained from Binadhan-7 when transplanted with 2 seedlings hill^-1 and BRRI recommended fertilizer dose.

Keywords: Rice, Variety, Seedlings per hill, Fertilizer

Location: The experimental field of Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh

Start Date: 00-07-2008

End Date: 00-12-2008

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

1. To assess the yield performances of two released varieties and an advanced rice line by combining two management practices viz., number of seedlings hill^-1 and fertilizer dose and to recommend the suitable combination as well as variety for maximizing yield.

Methodology:

The experiment was conducted at the experimental field of BINA, Mymensingh during the period from July to December 2008 to study the effect of number of seedlings hill-1 and fertilizer dose on the yield and yield attributes of two released aman variety and an advanced rice line. The land was medium high with silty loam in texture and more or less neutral in reaction. The organic matter and potassium contents of the soil are low. Two factors were included in the experiment, the first one was variety viz., Binadhan-7 (V₁), Advanced rice line YS-1281 (V₂), BRRI dhan32 (V₃) and the other one was the number of seedlings hill^-1 combined with fertilizer dose viz., 2 (S₁), 4 (S₂) and 6 (S₃) seedlings hill^-1 with BARC (F₁: 195, 75, 100, 70 and 8.4 Kg N, P, K, S and Zn ha^-1, respectively) and BRRI recommended fertilizer dose ( F₂: 166, 62.5, 83, 56 and 7 Kg N, P, K, S and Zn ha^-1, respectively). The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The treatments were allocated randomly. The unit plot was 3.6 m² (2m x 1.8m). The seeds of the varieties were collected from BINA, Mymensingh. The seeds were sown in the wet seed bed on 2 August 2008. The unit plot were fertilized according to above mentioned fertilizer doses in the form of urea, triple super phosphate, muriate of potash, gypsum and zinc sulphate, respectively. Thirty-day old seedlings according to seedling treatments were transplanted on 1 September 2008 following the planting spacing of 20 cm x 15 cm. The data were recorded on two broad parameters viz., growth characters and yield components. Three hills from each plot from central 1m²area were randomly selected and tagged for taking data on growth parameters. The data were taken on plant height, number of total and effective tillers hill-1, leaf weight, stem weight, panicle weight and leaf area at 60, 75 and 90 DAT to investigate the growth performance of the varieties. An area of 1 m x 1 m was selected at maturity in the middle of the plot and five hills were uprooted from that area at harvest for recording data on different crop and yield characters. The crop was harvested on 1 December 2008. Data on yield attributing characters including plant height, number of total and effective tillers hill-1 were recorded from five hills in each plot. Twenty panicles were randomly selected from the above five hills for taking data on panicle length, grains panicle^-1, sterile spikelets panicle^-1. Grain and straw yields and 1000-grain weight were taken from the harvest of twenty hills at maturity from the middle 1 m² area also. The grains were cleaned and its dry weights as well as dried straw weight were taken by weighting in a balance. The grain weight was adjusted at 14% moisture content. From these data of grain and straw per plot yield were calculated and finally converted as t ha^-1. Finally the data were tabulated in proper form and were analyzed statistically with the help of computer package MSTAT-C program. The mean differences among the treatments were adjudged by Duncan’s New Multiple Range Test.

Source of Information: J. Agrofor. Environ. 4 (1): 35-38, 2010; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It was evident from the results that significant variations were observed in all varieties in respect of all growth parameters, yield and yield attributes. BRRI dhan32 produced the maximum panicle length (23.8 cm), grains panicle^-1 (96.1), weight of 1000-grain (24.96 g), grain yield (6.06 t ha^-1) and straw yield (7.32 t ha^-1). Number of seedlings hill^-1with fertilizer dose significantly influenced all the characters except weight of 1000-grain and harvest index at maturity. Both grain (6.46 t ha^-1) and straw yield (6.57 t ha^-1) was highest with the treatment of four seedlings hill^-1 and BRRI recommended fertilizer dose and the lowest grain (5.30 t ha^-1) and straw yield (5.71 t ha^-1) was obtained from two seedlings hill^-1 with BRRI recommended fertilizer dose and four seedlings hill^-1 with BARC recommended fertilizer dose, respectively. Results revealed that among line/varieties, the highest grain yield (7.40 t ha^-1) was obtained from BRRI dhan32 when transplanted with 4 seedlings hill^-1 along with BRRI recommended fertilizer dose and the lowest grain yield (5.03 t ha^-1) was obtained from Binadhan-7 when transplanted with 2 seedlings hill^-1 and BRRI recommended fertilizer dose.

Knowledge Management: Journal