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Effects of Bio-slurry with Chemical Fertilizer on the Performance of Some High Yielding Varieties of Boro Rice (oryza Sativa L.)

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

U.K. Sarker
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202

M.R. Uddin
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202

S. Rehana
Biotechnology and Genetic Engineering Discipline, Khulna University, Khulna

M.M.I. Hoque
ACI Limited, Dhaka, Bangladesh

M.A. Islam
Bangladesh Agricultural Development Corporation, Kishoreganj, Bangladesh

Abstract/ Executive Summary:

Rice yield is greatly influenced by application of manures and fertilizer. Integrated use of organic manure and chemical fertilizer would be quite promising in providing better yield. To evaluate the effect of bio-slurry along with chemical fertilizer, a field experiment was conducted in the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, Bangladesh. The experiment was comprised of four varieties of boro (dry season irrigated) rice viz., (i) BRRI dhan28, (ii) BRRI dhan29 (iii) Binadhan-8 (iv) Binadhan-10 and four fertilizer management viz., (i) control, (ii) recommended dose of inorganic fertilizer, (iii) bio-slurry@ 5 t ha^-1+ inorganic fertilizer, (iv) farmers’ practice (average 15 farmers). The experiment was laid out in a randomized complete block design with three replications. It is evident that variety and fertilizer management had significant effect on effective tillers hill^-1, number of grains panicle^-1 which ultimately influenced grain yield. The highest grain yield was (6.03 t ha^-1) in Binadhan-8 followed by Binadhan-10 and BRRI dhan29. The lowest grain yield was found from BRRI dhan28. In respect of fertilizer management, grain yield was highest (5.90 t ha^-1) in bio-slurry @ 5 t/ha + inorganic fertilizer. The lowest grain yield was found from control. The combined effect of variety and fertilizer application showed that highest grain yield (6.10 t ha^-1) was found from Binadhan-8 with bio-slurry @ 5 t ha^-1+ inorganic fertilizer and the lowest grain yield (4.68 t ha^-1) was found from BRRI dhan28 with farmers’ practice. Thus, the variety Binadhan-8 with application of bio-slurry @ 5 t ha^-1 + inorganic fertilizer was superior for obtaining highest yield.

Keywords: Bio-slurry, Crop yield, Effective tillers, Fertilizer management, Harvest index, High yield varieties

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, Bangladesh

Start Date: 00-11-2015

End Date: 00-06-2016

Program Area: Crop-Soil-Water Management

Non-commodity: Performance

Objectives:

1. To evaluate the effects of variety on the yield and yield contributing characters of boro rice,

2. To determine the suitability of different sources of organic and inorganic fertilizer including bio-slurry on yield contributing characters of boro rice and

3. To find interaction of variety and fertilizer management for boro rice yield.

Methodology:

The experiments were performed at the Agronomy Field Laboratory of Bangladesh Agricultural University, Mymensingh during the period of November 2015 to June 2016 to study the effect of bio-slurry on the performance of boro rice. The experimental site is located at 24^o75^' N latitude and 90°50^' E longitude at an elevation of 18 m above the mean sea level. The experimental area is characterized by non-calcareous dark grey floodplain soil belonging to the Sonatola Soil Series under the Old Brahmaputra Floodplain, Agro-Ecological Zone 9 (FAO and UNDP, 1988). The soil of the experimental field was more or less neutral in reaction with pH value 6.8, low in organic matter and fertility level. The land type was medium high with silty loam in texture. The experimental treatments consists of four cultivars namely V₁ = BRRI dhan28, V₂ = BRRI dhan29, V₃ = Binadhan-8 and V₄ = Binadhan-10 and four fertilizer doses T₁ = Control (no manure and fertilizer), T₂ = Recommended dose of inorganic fertilizer (N-P-K-S-Zn@140-60-80-2-10 kg ha^-1), T₃ = Bio-slurry @ 5t/ha + inorganic fertilizer and T₄ = Farmers’ practice (average 15 farmers). The experiment was laid out in a randomized complete block design (RCBD) with three replications. The unit plot size was 4.0 m × 2.5 m. The distance maintained between the individual unit plots was 0.5m and that between the replications 1.0 m. The experimental land was first opened with a tractor drawn disc plough. The land was then puddled thoroughly by repeated ploughing and cross ploughing with a country plough and subsequently leveled by laddering. Weeds and stubbles were cleared off from individual plot. Fertilizer was applied as per specification based on treatment. Calculation of nutrients on IPNS basis was done and only required amount were applied from fertilizers. Whole amounts of other fertilizers except Urea were applied during the final land preparation. Urea was applied in three equal splits at 15, 40 and 70 days after transplanting (DAT), respectively. Thirty five day old seedlings of rice were transplanted on the well puddled experimental plots on 24 January 2016. The plot were kept weed free up to 60 days after transplanting by hand weeding as and when needed but afterwards no weeding was done. Irrigation was given to maintain a level of standing water up to 2-4 cm till maximum tillering stage and after that, a water level of 7-10 cm was maintained up to grain filling stage and then drained out of the field after milk stage to enhance maturity. The experimental crop of each plot was harvested separately at full maturity on 7 May 2016. The grain and straw weights for each plot were recorded after proper sun drying and then converted into ton per hectare. The grain yield was adjusted at 14% moisture level. Prior to harvesting, five plants were selected randomly from each plot excluding border plants and uprooted carefully for collecting data on yield contributing characters. All the collected data were analyzed following the Analysis of Variance (ANOVA) technique and mean differences were adjudged by Duncan's Multiple Range Test (DMRT) (Gomez and Gomez, 1984) using a computer operated programme named MSTAT.

Source of Information: Archives of Agriculture and Environmental Science 3(2): 109-115 (2018)

Article Link (Online Journal): DOI: 10.26832/24566632.2018.030202

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Results of the experiment showed that variety had significant effect on yield contributing parameters and yield. The highest values of most of the characters were found on Binadhan-8. Results of the experiment also demonstrated that fertilizer management had significant effect on yield contributing parameters and yield. The highest value of all characters were observed with the application of T₃ (Bio-slurry @ 5t/ha + inorganic fertilizer) followed by T₂ (Recommended dose of inorganic fertilizer), T₄ (farmers practice) and all cases the lowest one was observed when the land was fertilized with T₁ (control). Interaction effects of variety and fertilizer management were significant for most of the yield contributing characters and yield. The highest grain yield (6.10 t ha^-1), the highest straw yield (7.10 t ha^-1), were found from the combination of V₃×T₃ (Binadhan-8 with bio-slurry @ 5 t/ha + inorganic fertilizer). The lowest grain yield (4.76 t ha^-1) and straw yield (4.75 t ha^-1) were found from the interaction of V₁×T₁ (BRRI dhan28 with control). Based on the present study it can be suggested that the farmers’ can grow boro rice cv. Binadhan-8 with bio-slurry @ 5 t/ha + inorganic fertilizer in boro season for obtaining maximum grain yield.

Knowledge Management: Journal