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Evaluation of Cauliflower Genotypes in Hilly Area Under Varied Sowing Dates

B Debnath*
Department of Horticulture, Sylhet Agricultural University, Sylhet-3100, Bangladesh

J Mia
Department of Horticulture, Sylhet Agricultural University, Sylhet-3100, Bangladesh

D Debnath
Department of Finance, Bangladesh University of Business and Technology, Dhaka, Bangladesh

M S Islam
Department of Horticulture, Sylhet Agricultural University, Sylhet-3100, Bangladesh

Abstract/ Executive Summary:

The present study was conducted with four cauliflower genotypes viz., CL-170, CL-171, CL-172 and BARI Fulcopi-1 and three sowing dates viz., 25 August, 5 September and 25 October. The experiment was conducted during the winter season of 2013-14 at the field laboratory of Horticulture Department of Sylhet Agricultural University (SAU) to evaluate growth and yield of cauliflower genotypes and to identify the suitable planting time in Sylhet conditions. Results showed that sowing dates and genotypes had significant influenced on growth and yield of cauliflower. The lowest days to first curd harvest was from the plant grown in 5 October sowing (86.25 days) while it was the highest from the plants in 25 August sowing (91.58 days). The highest whole plant weight was recorded from the plants of 25 August sowing (0.78 kg) while the highest individual curd weight (0.48 kg) and only curd weight (0.31 kg) was recorded in 15 September sowing. The plants in 15 September sowing produced the highest curd yield (16.32 t ha^-1) followed by 15 August sowing (15.64 t ha^-1). Days to first curd initiation and days to first harvest were significantly different among the genotypes. CL-171 was the earliest to first harvest (88.69 days) while the genotype CL-170 required 91.22 days to first harvest. The genotype BARI Fulcopi-1 had the highest whole plant weight (0.97 kg), marketable curd weight (0.55 kg) and only curd weight (0.32 kg). Among the four genotypes, BARI Fulcopi-1 produced the highest marketable curd yield (18.7t ha^-1) followed by CL-171 (16.37 t ha-1). Whole plant weight, marketable curd weight and only curd weight were significantly influenced by the interaction of genotypes and sowing dates. The highest marketable curd was harvested from the genotype BARI Fulcopi-1 (20.74 t ha^-1) when grown in 15 September sowing which was followed by the same genotype from 25 August sowing (18.7 t ha^-1).

Keywords: Cauliflower, Genotype, Sowing date, Hilly area

Location: Horticulture Department at Sylhet Agricultural University (SAU), Sylhet

Start Date: 00-08-2012

End Date: 00-03-2013

Program Area: Variety and Species

Commodity: Cauliflower

Objectives:

The present study was undertaken to select suitable cauliflower genotype at different sowing dates under hill valley conditions.

Methodology:

The experiment was conducted at the experimental field of Horticulture Department at Sylhet Agricultural University (SAU), Sylhet during August 2012 to March 2013. The experimental site located under the Agro-ecological Zone-20: Eastern Surma-Kusiyara Flood Plain (UNDP and FAO, 1988). The land was situated just beside some hillocks of the university campus. The area was within the monsoon climatic zone, with annual average highest temperature is 23⁰C (August -October) and average lowest temperature is 7⁰C (during January) (BBS, 2012). Nearly 80% of the annual average rainfall of 3,334 mm occurs between May to September and scanty during rest of the year. The reaction of soils ranges from strongly acidic to neutral (4.7-6.9), (UNDP and FAO, 1988). Previous crop was tomato in the experimental field. The materials of the experiment included four Cauliflower genotypes viz. CL-170, CL-171, CL-172 and BARI Fulcopi-1. The seeds of the genotypes were collected from the Department of Horticulture, Sylhet Agricultural University, Sylhet. The experiment was laid out in a Randomized Complete Block Design with three replications. In field experimentation, the unit plot size was 2.4 m × 1.0 m having double row bed-1and 12 plants row^-1 and 24 plants plot^-1. Plants were spaced at 60 cm × 40 cm between plant to plant and row to row, respectively. The unit plot and blocks were separated by 50 cm. The following doses of fertilizers (Rashid, 1999) were applied in the experimental field as cowdung: 15-20 t ha^-1, Urea: 300 kg ha^-1, TSP: 200 kg ha^-1 and MoP: 150 kg ha^-1. Seeds of four cauliflower genotypes were sown at three different sowing dates on 25 August, 15 September and 5 October of 2013 in raised seed beds to produce normal and healthy seedlings. Healthy and uniform sized 25 days old seedlings of each sowing dates were transplanted in the experimental field. Light irrigation was provided just after transplanting.Data on different parameters were recorded from sowing to harvest. The parameters viz. plant height (cm), number of leaves plant^-1, length of the largest leaf (cm), breadth of the largest leaf (cm), days to curd initiation, days to harvest, whole plant weight (kg), marketable curd weight (kg), only curd weight (kg), curd height (cm), curd breadth (cm) and marketable curd yield (t ha^-1) were recorded. Collected data on different parameters were subjected to statistical analysis using MSTAT software for analysis of variance and mean separation.

Source of Information: J. Sylhet Agril. Univ. 2(2):165-169, 2015 ISSN: 2308-1597

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The overall results obtained from the study facilitated to put forward that all the genotypes were able to produce curd during winter season at Sylhet region. Among the genotypes, BARI Fulcopi-1 and CL-172 can be recommended for cultivation in Sylhet region and among the sowing times, 15 September was found most suitable for cauliflower cultivation in Sylhet region. However, the experiment may be repeated for confirmation of the revealed results in specific location.

Knowledge Management: Journal