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Effect of Potassium Fertilizer on the Growth of Boro Rice Varieties in Haor Areas

M G Rabbani*
Department of Soil Science, Faculty of Agriculture, Sylhet Agricultural University, Sylhet-3100, Bangladesh

M A Kashem
Department of Soil Science, Faculty of Agriculture, Sylhet Agricultural University, Sylhet-3100, Bangladesh

M A Aziz
Department of Soil Science, Faculty of Agriculture, Sylhet Agricultural University, Sylhet-3100, Bangladesh

M S Hossain
Department of Soil Science, Faculty of Agriculture, Sylhet Agricultural University, Sylhet-3100, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted at the Tajpur village of the Lakshmansree Union, Sunamganj Sadar Upazila and Rahimapur village of the Beheli union, Jamalgonj Upazila, Sunamganj district during November 2016 to May 2017 to see the effect of variety and MoP fertilizer on the growth of boro rice varieties in haor areas. Two varieties (BRRI dhan29 and BRRI dhan58) and six MoP fertilizer rates including 147, 137, 127 [BARC Fertilizer Recommendation Guide], 117, 107 and 82 kg ha^-¹ [Farmers’ practice dose (FP)]. Urea-TSP-CaS04-ZnS04 application followed as BARC Recommendation dose of 300-112-75-11 kg ha^-¹ Farmers’ practice (FP) where 165 and 82 kg ha^-¹ Urea and TSP were used. The experiment was laid out in a randomized complete block design (RCBD) with three replications. Plant height of BRRI dhan58 (95.33 cm)was significantly higher than BRRI dhan29 (91.52 cm). Plant height also affected due to application of MoP fertilizer treatments at all stages of growth. Interaction effect of variety and MoP fertilizer showed significant variation at 45, 60 and 75 days after transplanting (DAT). At 75 days after transplanting (DAT), the higher number of tillers hill^-¹ (21.83) was produced by BRRI dhan29. But it was higher in BRRI dhan58 (14.20) at harvest. Higher number of effective tillers hill^-1 (12.48) was produced by BRRI dhan58. The correlation values indicated that growth and yield parameters were positively significant except few non-yielding characters.

Keywords: Fertilizer, Haor, Varieties, Boro season, Growth parameter.

Location: Dekarhaor and Halir haorin Sunamganj district

Start Date: 00-11-2016

End Date: 00-05-2017

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer, Rice

Objectives:

This experiment was undertaken to observe the effect of different MoP fertilizer dose on the growth of boro rice varieties in haor areas.

Methodology:

The experiment was conducted at Dekarhaor and Halir haorin Sunamganj district during November 2016 to May 2017. The experimental sites were situated at the Tajpur village of the Lakshmansree Union, Sunamganj Sadar Upazila and Rahimapur village of the Beheli union, Jamalgonj Upazila, Sunamganj. The site falls in the Sylhet Basin Agro-ecological zone (AEZ-21). The experiment included two factors, two varieties (BRRI dhan29 and BRRI dhan58) and six MoP fertilizer practices including F1= MoP 147 kg ha^-1, F2= MoP 137 kg ha^-1, F3= MoP 127 kg ha^-1[BARC FertilizerRecommendation dose], F4= MoP 117 kg ha^-1, F5= MoP 107 kg ha^-1, F6 = MoP 82 kg ha^-¹ [Farmer’s practice dose (FP)]. In case of F1-F5 Urea-TSP-CaS04-ZnS04 followed BARC Recommendation dose of 300-112-75-11 kg ha^-¹ through Urea-TSP-CaS04-ZnS04), F6 followed Farmers’ practice (FP) as 165 and 82 kg ha^-¹ Urea and TSP were also used for this experiment. The experiment was laid out in a randomized complete block design (RCBD) with three farmers replications.The initial soil nutrients status were pH 4.8, organic matter status 2.8%, total N0.15%, available P 4.10 ppm,exchangeable K 0.18 meq100g-1andavailable S 26 ppm. The size of plot was 4 m × 5 m. Thirty five days old seedlings were transplanted maintain spacing20 cm×15 cm.The experimental field was ploughed and prepared on 1-5 January2017 with the help of a power tiller. Immediately after final land preparation, the experimental layout was made on 5-6 January 2017 according to experimental treatments. The total amount of triple superphosphate, muriate of potash, gypsum and zinc sulphate was applied during final land preparation except urea. MoP was applied as per treatments. Urea (N) was applied in equal 3 splits i.e., one-third at 15 days after transplanting, again one-third at active tillering stage (30 DAT) and rest of one-third before panicle initiation stage (45 DAT). Rice was transplanted on 5-6 January 2017. Standing water was maintained 4-5 cm in the field throughout the growing period. BRRI dhan58 was harvested on 29 April 2017 and BRRI dhan29 was harvested on 8 May 2017. Data were collected on growth characters. The initial and post-harvest soil sample was collected from 0-15 cm soil depth and analyzed. The recorded data were compiled and tabulated for statistical analysis. Analysis of variance and LSD were done with the help of computer package, MSTAT-C.

Source of Information: J. Sylhet Agril. Univ. 4(2):261-266, 2017 ISSN: 2308-1597

Article Link (Online Journal): www.jsau.com.bd

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The experiment showed that the variety BRRI dhan58 produced higher plant height and number of total tillers hill^-¹ than BRRI dhan29 which reflected in the yield.BARCFertilizer Recommendation Guide based fertilizers gave the best performance among other treatments. On the basis of results it may be concluded that BRRI dhan58 may be suggested with application of 127 kg ha^-¹ MoP fertilizer with other fertilizers as per BARC recommendation of the haor areas.

Knowledge Management: Journal