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Effect of Planting Dates on Growth, Yield and Quality of Seeds of Eleven Accessions of Carrot

Kamrun Nahar Mitu
Department of Horticulture, Bangladesh Agricutural University, Mymensingh-2202

M.A. Rahim
Department of Horticulture, Bangladesh Agricutural University, Mymensingh-2202

Abstract/ Executive Summary:

An experiment was conducted at the USDA Allium-Carrot Project Field Laboratory of Horticulture Farm, Bangladesh Agricultural University, Mymensingh, during November 2013 to November 2014 to investigate the effect of planting dates on yield and quality of seeds of eleven accessions of carrot. The two factor experiment consisted of two steckling planting dates viz., 01 February and 14 February; and eleven carrot accession viz., Accession-1 (Brassilia Agroflora, BA), Accession-2 (Prima Agroflora, PA), Accession-3 (Uberlandica), Accession-4 (Brasilica), Accession-5 (J-1 carrot Japan), Accession-6 (J-2 carrot Japan), Accession-7 (J-3 carrot Japan), Accession-8 (J-4 carrot Japan), Accession-9 (J-5 carrot Japan), Accession-10 (J-6 carrot Japan), Accession-11 (Shinduri OP) was laid out in randomized complete block design with three replications. The results revealed that seed yield and most of the yield contributing characters significantly influenced by the treatment of the experiment under study. Results showed that the February 01 planting gave the higher seed yield (18.50g/plant and 925.16kg/ha) and the lower (17.69g/plant and 884.61kg/ha) yield from February 14 planting. All the parameters under study for the yield and quality of carrot seed is influenced significantly by accession too. The seed yield/plant and per hectare were the highest (34.06g and 1703.13 kg) in the Accession-2 and the lowest seed yields (10.21g/plant and 510.63kg/ha) were found in the Accession-7. Accession and planting dates exerted statistically highly significant interaction and combined effects on the seed yield per hectare. The highest seed yield (1938.00 kg) was obtained from the combination of AC2T1 (Accession-2 and First planting date, 01 February). The lowest seed yield (562.50 kg) was recorded from AC7T2 (Accession-7 and second planting date, 14 February) treatment combination.

Keywords: Accession, Carrot, Planting date, Quality seed, Yield.

Location: USDA Allium-Carrot Project Field Laboratory of Horticulture Farm, Bangladesh Agricultural University, Mymensingh

Start Date: 00-11-2013

End Date: 00-11-2014

Program Area: Seed Technology

Commodity: Carrot

Objectives:

1. To investigate the effect of planting dates on yield and quality of seeds of eleven accessions of carrot with a view to find out the optimum planting dates for quality carrot seed production and suitable accession for maximizing carrot seed production.

Methodology:

The present research work was conducted at the USDA Allium-Carrot Project Field Laboratory of Horticulture Farm, Bangladesh Agricultural University, Mymensingh, during November 2013 to November 2014 to investigate the effect of planting dates on yield and quality of seeds of eleven accessions of carrot. The two factor experiment consisted two planting dates viz., 01 February and 14 February; and eleven carrot accession viz., Accession-1 (Brassilia Agroflora, BA), Accession-2 (Prima Agroflora, PA), Accession-3 (Uberlandica), Accession-4 (Brasilica), Accession-5 (J-1 carrot Japan), Accession-6 (J-2 carrot Japan), Accession-7 (J-3 carrot Japan), Accession-8 (J-4 carrot Japan), Accession-9 (J-5 carrot Japan), Accession-10 (J-6 carrot Japan), Accession-11 (Shinduri OP). The experiment was laid out in randomized complete block design with three replications. Each block was divided into forty four unit plots each measuring 1.0 m × 1.0 m. The block to block and plot to plot distances were 1 m and 50 cm respectively. In each block 44 treatments were placed randomly. Thus there were 132 (44×3) unit plots altogether in the experiment. Manure and fertilizer doses was applied to the selected land to raise the carrot stecklings at the rate of Cow Dung 10 tonnes/ha, Urea 100 Kg/ha, TSP 105 Kg/ha, MoP 175 Kg/ha. The total quantity of cowdung was applied during land preparation. Half of the recommended quantity of urea, total quantity of TSP and half of MoP were applied as top dressing after 30 days and the remaining halves of urea and MoP after 45 days of seed sowing. The seeds were soaked in water for 24 hours and the soaked seeds were sown uniformly in the finally prepared land at 30 cm apart on 07 November, and 22 November, 2013 in rows and covered with loose soil to help the quick germination of seeds. Seed germination occurred within 7 days and excess plants were thinned twice at 15 and 30 days after seed sowing. When the plants were 83 days old, the roots were uprooted, transplanted after pruning (50%). Carefully uprooted plants were pruned as per required extent (1/2 root) of the treatment. Prior to transplanting, the cut stecklings were kept in the solution of Dithane M-45 @ 2 g per litre of water for 5 minutes to prevent fungal infestation at the cut surface. The prepared stecklings of carrot were transplanted on 01 and 14 February, 2014. All intercultural operation were done as and when need. Mature seed umbels were harvested at different dates by picking according to maturity of umbel in different treatments. Harvesting started from 02 May and continued up to 06 June, 2014. Primary and secondary umbels of each plant were harvested separately for each treatment. After harvesting the umbels were dried properly under the sun. Seeds were collected from primary and secondary umbels of each plant under different treatments by hand rubbing. Five sample plants were selected randomly from each unit plot and data were recorded on individual plant basis from the selected plants. The data collected from the experimental plots were statistically analyzed. The mean values of all treatments were calculated and the analysis of variance for most of the characters was accomplished by F variance test. The significance of difference among the treatment means was evaluated by least significant difference (LSD) test at 5% and 1% levels of probability.

Source of Information: J. Agrofor. Environ. 8 (2): 159-162, 2014; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Results showed that the February 01 planting gave the higher seed yield (18.50g/plant and 925.16kg/ha) and the lower (17.69g/plant and 884.61kg/ha) yield from February 14 planting. All the parameters under study for the yield and quality of carrot seed is influenced significantly by accession too.

Knowledge Management: Journal