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Effects of Variety and Weight of Stecklings on Yield and Quality of Carrot Seed

M.A. Malek
Department of Horticulture, Patuakhali Science and Technology University, Patuakhali

D. Mohammed
Public Relations & Publications Section, BAU, Mymensingh

M. Sikdar
Metal Agro limited, Salna Gazipur

M.S. Rahman
RARS, BARI, Akbarpur, Moulvibazar

Abstract/ Executive Summary:

The study was carried out to investigate the effects of variety and weight of stecklings on quality seed production of carrot. Using three varieties viz. Brasilia Agroflora, Prima Agroflora, New Kuroda and three different weight of stecklings viz. 40, 80, 120g weight stecklings were used. The two-factor experiment was laid out in RCBD with three replications. Different variety and weight of stecklings showed highly significant influence all most all the parameters studied. The highest seed yield (1450.30 kg/ha) was recorded from Brasilia Agroflora and the quality of seed (germination 86.23% and seed vigour index 12.69) was produced from the same variety, on the other hand, the lowest seed yield (1124.38 kg/ha) and germination (76.60%) obtained from New Kuroda. The 80g weight stecklings was recorded the highest seed yield (1434.29 kg/ha) and the quality of seed (germination 85.14% and seed vigour index 12.54) produced from the same weight, while the lowest seed yield (1206.99 kg/ha) and germination (79.03%) were recorded from 40g weight stecklings. In case of combined effect, the highest seed yield (1578.73 kg/ha) was obtained from Brasilia Agroflora with 80g weight stecklings and that of the lowest (1044.57 kg/ha) from New Kuroda with 40g weight stecklings.

Keywords: Carrot, Variety, Stecklings weight, Yield, Quality seed

Location: Horticulture Farm, Bangladesh Agricultural University, Mymensingh

Start Date: 00-09-2011

End Date: 00-06-2012

Program Area: Crop-Soil-Water Management

Commodity: Carrot

Objectives:

1. To establish the suitable variety and optimum weight of stecklings for maximizing the yield and quality of carrot seed.

Methodology:

The experiment was conducted at Horticulture Farm, Bangladesh Agricultural University, Mymensingh during September, 2011 to June, 2012. Three varieties of carrot viz. Brasilia Agroflora, Prima Agroflora and New Kuroda, and three different weight viz. 40, 80 and 120g weight of stecklings were used in this study. The unit plot size was 1 m x 1 m. Seeds were sown uniformly in rows in 15 September’11 and 75 days old stecklings were transplanted in 2 December’11. The selected land was medium high and the texture of soil was clay loam. The two-factor experiment was laid out in RCBD with three replications. The experimental plot was prepared by good tilth and fertilized with recommended doses of manures and fertilizers. The seeds of carrot varieties were collected from USDA-Alliums’ project, Department of Horticulture, BAU, Mymensingh. All intercultural operations were done as and when needed. The matured umbels were harvested in several phases, when the umbel turned into grayish in colour. Seeds were then collected by hand rubbing, cleaned and dried until they reached in safe moisture (7-9%) level. After 30 days of storage, the seeds of each treatment were placed for germination test and measure vigour index in petridishes methods, taking 100 seeds for each treatment with blotting papers in the laboratory. The seed vigour was measured through its speed of germination. The germinated seeds were counted every day until germination was completed. An index of the speed of germination was then calculated by adding the quotients of the daily counts divided by the number of days of germination using the formula as below: Seed vigour index = (No. of seed germinated at first count/No. of days required to first count) + …….. + (No. of seed germinated at last count/No. of days to last count). Thus, the seeds with higher index has faster germination rate and would be considered to be higher in vigour. Data were recorded on vegetative growth and flowering behavior, yield components, yield and quality contributing characteristics of carrot from five randomly selected plants of each plot and were analyzed statistically by Mstatc computer programme. The difference between the treatment means was adjudging by least significant difference (LSD) test.

Source of Information: J. Agrofor. Environ. 6 (1): 47-50, 2012; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Highly significant variations were observed most of all the parameters under study due to combined effects of variety and weight of stecklings. The tallest plant height (175.16 cm) was recorded in treatment combination of Brasilia Agroflora with 80g weight stecklings treatment, while the lowest (100.77 cm) in New Kuroda with 40g weight. The longest days to 50% flowering (65.47 days) were required in the treatment combination of New Kuroda with 120g weight stecklings and the shortest period (54.05 days) from Brasilia Agroflora with 120g weight. The highest time required (15.16 days) from flower to fruit set was found in New Kuroda with 120g weight stecklings and the lowest time (11.56 days) in the variety of Prima Agroflora with 120g weight stecklings. The highest number of primary umbels/plant (11.40) was recorded in Brasilia Agroflora with 80g weight stecklings, while the lowest (7.45) in Brasilia Agroflora with 40g.

Knowledge Management: Journal