Cauliflower (Brassica oleracea var. botrytis L.) and cabbage (Brassica oleracea var. capitata L.) are important winter vegetable crops cultivated in Bangladesh. Planting date is crucial for successful production, but the farmers of the haor areas generally cultivate cauliflower and cabbage not maintaining proper planting dates. The study aimed to search the suitable varieties and planting dates of cauliflower and cabbage. Two individual experiments were conducted in Naogaon village at Dekar haor in Sunamganj district from October 2018 to February 2019. Three planting dates- 5 November, 15 November and 25 November were selected for both the experiments. In experiment one, two hybrid cauliflower varieties- Shira Giko, White Mountain and one OP variety Queen were selected. Atlas 70 and Queen F1 were included in experiment two. The experiments followed two factors randomized complete block design (RCBD) with three farmers’ replications. Data were collected on curd diameter, curd yield, gross and marketable yield for cauliflower. The cabbage head diameter, head yield, gross and marketable
yield data were also recorded. Economic performance was calculated for the cost of production, ross return, net return and BCR for both the crops. The result showed that the curd diameter (37.56 cm), curd yield (16.36 t ha-1), marketable yield (25.83 t ha-1), gross yield (50.48 t ha-1), and BCR (4.55) were highest on 15th November in the case of cauliflower. Again, head diameter (56.6 cm), head yield (49.17 t ha-1), marketable yield (61.31 t ha-1), gross yield (75.91 t ha-1), and BCR (6.28) were highest on 5th November for cabbage. Cauliflower variety, Shira Giko and cabbage variety, Atlas 70, were the high-yielding varieties compared to others. Mid- November and early November planting were suitable for cauliflower and cabbage cultivation, respectively in the haor areas.

Keywords: Cauliflower, Cabbage, Haor, Planting dates, varieties

The experiment was conducted to screen some maize varieties available in Bangladesh on the basis of their reproductive characteristics. Mean data were used to statistical analyze like analysis of variance, mean, range were calculated by using MSTATC software program. Significant variations among 50 maize genotypes in terms of all the yield contributing characters were found in this study. The lowest (24) days to 50% tasselling was found from the genotype 25KSS and VA-786, while the minimum (54) days to 50% silking was observed in the genotype PAC-984. The longest (21cm) cob was observed in the genotype VA-786, and the highest (17.07cm) cob diameter was recorded in the genotype GP-838.The highest (16.61) row per cob was recorded in the genotype NZ-001, and the highest (40.40) number of grains per row was recorded in the genotype PAC-399. The highest100grain weight (383.33g), was recorded in the genotype 25KSS, while the lowest (153.3g) was observed in the genotype of Uttaran-2. Statistically, significant variation was recorded for days to maturity in different maize genotypes. The highest (116) days to maturity were found in the genotype Elite, while the lowest days to maturity (107.3) were found in the genotype BHM-3. Grain yield (t ha^-1) varied significantly in maize genotypes under the study. The average grain yield was recorded at around 6.14(t ha^-1), and it ranged from 2.30 to 8.17. The highest grain yield (8.17 t ha^-1) was recorded in genotype BHM-9, which was followed by PAC-984 (7.90t ha^-1) and Pacific-98 (7.90t ha^-1). Therefore, this experiment suggests that these three hybrids– namely,   BHM-9, PAC-984, and Pacific-98 have a high potential to produce more yield and are suitable for commercial cultivation in Bangladesh.

Keywords: Maize, Varieties, Screening, Variation

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