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Effect of Nutrient Management on Growth and Yield of Cauliflower Hybrids in Haor Area

M Salwa
Research associate, Department of Soil Science, Sylhet Agricultural University, Sylhet -3100

MA Kashem
Professor
Department of Soil Science, Sylhet Agricultural University, Sylhet -3100

Abstract/ Executive Summary:

The experiment was conducted in the Dekarhaor of Noagaon village under South Sunamganj Upazila of Sunamganj district during November 2017 to February 2018 to observe the effect of nutrients management on growth and yield of cauliflower hybrids. Two Hybrids namely Shira Giku (V₁) and Rupali (V₂), and four combinations of nutrients, viz. (i) recommended rate of N-P-K-S-Zn-B @ 180-80-180-28-4.5-2.1 kg ha^-1(F₁), (ii) F₁ + 25% N-P-K- S-Zn-B of F₁ (F₂), (iii) F₁ – 25% N-P-K-S-Zn-B of F₁ (F₃), and (iv) cow dung @ 10 t ha^-1 (F₄) was conducted in a factorial randomized complete block design (RCBD) and replicated thrice. Plant height (cm), numbers of leaves plant^-1, leaf length (cm) and leaf breadth (cm), and spreading diameter (cm) were collected at 15 days intervals, while the yield data were recorded at harvest. The parameters were significantly varied due to hybrids and fertilizers packages. Higher gross yield (42.52tha^-1) was found in Shira Giku and lower (42.12 t ha^-1) from Rupali. Higher curd yield of 25.17 t ha^-1 was obtained in Shira Giku than Rupali (9.61 t ha^-1). The highest gross yield of 44.45 t ha^-1 was obtained when the crop was treated with cowdung @ 10 t ha^-1 followed by recommended fertilizer rate (F₁). The curd yield of 18.19 t ha^-1 was obtained with 25% less than recommended fertilizer rate of application (F₃). The highest gross yield of 52.93 t ha^-1 was obtained in V₁F₁ combination and the lowest of 30.10 t ha^-1in V₂ F₁. Results revealed that the Hybrid Shira Giku with recommended dose of fertilizer (180-80-180-28-4.5-2.1 kg ha^-1N-P-K-S-Zn-B) performed the best in comparison to other treatment combinations.

Keywords: Hybrid, Fertilizer, Growth, Yield, Cauliflower, Haor

Location: South Sunamganj Upazila in Sunamganj district

Start Date: 00-11-2017

End Date: 00-02-2018

Program Area: Crop-Soil-Water Management

Commodity: Cauliflower, Fertilizer

Objectives:

To select a suitable hybrid of cauliflower and appropriate nutrient management package for increasing productivity of the crop in the haor areas of Sunamganj.

Methodology:

The experiment was conducted in the Dekar haor areas of South Sunamganj Upazila in Sunamganj district, during November 2017 to February 2018. Two hybrids viz. Shira Giku (V1) and Rupali (V₂), and four combinations of nutrients viz. (i) recommended dose of fertilizer (FRG, 2012) (F₁) (391:388:391:156:12.8:18.6 kg ha^-1 as urea, TSP, MoP, Gypsum, ZnSO₄, borax), (ii) F₁ + 25% of F₁ (F₂), (iii) F₁ - 25 % of F₁ (F₃), and (iv) cowdung @ 10 t ha^-1 (F4) was conducted in haor area. The experiment was laid out in a Factorial Randomized Complete Block Design (RCBD) with three dispersed replications. The soil of the area was silt-loam in texture having pH 4.9 - 5.2. Experimental fields were medium high land with well drained condition. The unit plot size was 5 m 4 m with 50 cm 50 cm plant spacing. The seedlings were transplanted in the nursery bed from seed bed at a height of 3 cm for proper growth and development. Afterwards thirty-day old seedlings were transplanted in the main field on 11^th November 2017. The whole amount of TSP, Zn and B was applied as basal during the final land preparation. Urea and MoP were applied in three equal splits at 15, 30 and 45 DAT in ring method under moist soil condition and mixed thoroughly with the soil. Irrigation were done after fertilizer application and when necessary. Three weeding were done to control weeds at 20, 40 and 50 days after planting (DAP). Insects were controlled successfully by hand picking, removal of damaged leaves and spraying Malathion 57 EC @ 2ml L-¹ water. Yield related data on curd diameter (cm), gross yield (t ha-¹) and curd yield (t ha^-1) were recorded during harvesting. Cauliflower was harvested when attained marketable maturity. Harvesting was done at 2-3 days interval up to second week of January 2018. Data were converted into t ha-¹. The data were analyzed using R software and means separation were adjudged by using DMRT (Gomez and Gomez, 1984).

Source of Information: Bangladesh Agron. J. 2019, 22(1): 95-104

Article Link (Online Journal): DOI: https://doi.org/10.3329/baj.v22i1.44941

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Results revealed that the cauliflower var. hybrid Shira Giku performed better with recommended doses of fertilizer (180-80-180-28-4.5-2.1 kg ha^-1N-P-K-S-Zn-B) during late season. Research with more number of short duration late hybrids/ varieties is needed to conduct in haor area for higher production of cauliflower.

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