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Effect of Planting Time and Curd Scooping on Seed Production of Cauliflower Var. ‘bari Ful Kapi-1’

M. Moniruzzaman
Agricultural Research Station, Raikhali, Chandraghona, Rangamati

Z. A. Firoz
Regional Agricultural Research, Station, Hathazari, Chittagong

A. S. M. H. Rashid
Agricultural Research Station, Raikhali, Chandraghona, Rangamati

G. M. A. Halim
Vegetable Division, HRC, BARI, Jodebpur, Gazipur

Abstract/ Executive Summary:

The experiment was conducted at the Agricultural Research Station, Raikhali, Rangamati Hill District during the Rabi seasons of 2004-05 and 2005-06 to study the effect of planting time and curd scooping on the seed production of cauliflower var. BARI Fulkapi-1. Four planting dates at fortnight interval (15 October, 1 November, 15 November and 1 December) and curd scooping at edible maturity stage and a control (no curd scooping) were used. The experiment was laid out in the randomized complete-block design with four replications. Yield, yield attributes and other characteristics were significantly influenced by both the factors studied. The floral initiation (134-126 days), as well as the siliqua maturity (186-175 days), arrived earlier as the planting got delayed starting from 15 October to 1 December. The early (15 October) planting gave significantly maximum plant height, pods plant-1, 1000-seed weight and seed yield plant-1, which were statistically identical with the 1 November planting. The highest seed yield (321.17 kg ha-1 ) was obtained from 15 October planting closely followed by 1 November planting (319.08 kg ha-1). Curd scooping significantly influenced early flowering and siliqua maturity than that of no scooping. Curd scooping also significantly outyielded no curd scooping for seed yield and other attributes viz pods plant-1, length of pod, seeds pod-1, 1000-seed and seed germination. 15 October planting coupled with curd scooping gave the highest seed yield (22.36 g plant-1 and 596.46 kg ha-1 ) which was at par with 1 November planting with curd scooping.

Keywords: J. Sci. technol. (Dinajpur) Vol. 5: 67-73 (2007) ISSN 1994-0386

Location: Agricultural Research Station, Raikhali, Rangamati Hill District

Start Date: 00-00-2004

End Date: 00-00-2006

Program Area: Crop-Soil-Water Management

Commodity: Cauliflower

Objectives:

In the absence of the technical know how about the seed production technology, the production of quality seed in cauliflower is not up to the mark in Bangladesh. Therefore, the present investigations were initiated to study the effect of planting time and curd scooping on the seed production of cauliflower var. BARI Fulkapi-1

Methodology:

The experiment was carried out in the acidic soil at Agricultural Research Station, Raikhali, Rangamati Hill District during the Rabi seasons of 2004-05 and 2005-06 on a well drained soil under irrigated conditions. The experimental field was sandy clay loam with pH 5.7 and organic matter 0.58%, total available N 0.076%, available K 0.19 meq/100 g soil, available P 17 µg/g, available S 12µg/g and available B 0.2 µg/g. The treatments were four planting times viz., 15 October, 1 November, 15 November and 1 December and two curd scoopings: one at the edible maturity stage and one control (no curd scooping). The trial was laid out in the randomized complete block design having four replications. Thirty days old seedlings of the cauliflower cv. BARI Fulkapi-1 were transplanted in each experimental plot (3.0 x 2.4 m) as per schedule with a spacing of 60 x 50 cm. Manures and fertilizers were applied @ compost 10 t ha-1 of, N, P2O5, K2O, S and B @ 150, 80, 70, 40 and 2 kg ha-1 respectively. N, P2O5, K2O, S and B were applied in the form of urea, TSP, MP, gypsum and boric acid, respectively. Full amount of compost, TSP and boric acid, one-third urea and MP were applied during transplanting and the remaining urea and MP were applied in two equal splits at the curd initiation and the bolting stage. Irrigation and weeding were done as and when needed. In case of scooping treatment curds were centrally scooped at 5 cm radius with a sharp knife. After scooping, Dithane M-45 @ 2 g L-1 H20 was sprayed thrice at an interval of seven days as a preventive measure against fungal infection. During the flowering and the seed formation stages, optimal soil moisture contents were maintained through irrigation and bamboo stick supports were given to prevent lodging. Mature pods (siliquas) were harvested periodically and threshed after proper drying. Observations were recorded on days to 25% flowering from seedling transplanting, days to 50% siliqua maturity from seedling transplanting, plant height, number of branches plant-1 , length of pod, number of seeds pod-1 , 1000-seed weight and seed yield plant-1 from 10 randomly selected plants from each plot. The recorded seed yield plot-1 was converted to per hectare yield. Collected data were subjected to statistical analyses and means were compared using the LSD test at 5% level of probability. The mean temperatures prevailed in October, November, March, April and May of the experimentation period are also noted for interpretation of the results.

Source of Information: J. Sci. technol. (Dinajpur) Vol. 5: 67-73 (2007) ISSN 1994-0386

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Achievement/Findings:

Thus the findings of the present study led to the suggestion that transplantation could be done from 15 October to 1 November for higher cauliflower seed yield and curd scooping is better for seed production of the cauliflower var. BARI Ful Kapi-1. However, further study is needed to standardize the nature of scooping.

Knowledge Management: Journal