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Studies on Growth, Yield and Storage of Sweet Potato as Influenced by Variety and Time of Harvest

Murshida Akhter Jahan
MS Student
Dept. of Horticulture, Bangladesh Agricultural University (BAU), Mymensingh

Abstract/ Executive Summary:

The present experiment was attempt to study the effect of harvest time on growth, yield and storability of Sweet potato varieties namely, Daulatpuri, BAR 1-4 and BARI-5. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications and four different harvest times. The sweet potato vines were collected from the Tuber Crops Research Centre (TCRC), BARI, Gazipur. The vines were planted on 23 November, and the harvested after 110, 130, 150 and 170 DAP. After harvesting the storage performance of the tuberous roots after 56 days under ordinary room conditions was observed. The maximum length of tuber was recorded in Daulatpuri (l4.44cm). The maximum (4.36cm) and minimum (3.35cm) diameter of tuber were found in the varieties BARI-4 and Daulatpuri, respectively. The shape of BARI- 4 tubers were found most regular, whereas the most irregular in Daulatpuri. The variety BARI- 4 gave the highest yield of tubers (29.73 t/ha), whereas Daulatpuri gave the lowest yield (20.12 t/ha). In both early (110 DAP) and late (170 DAP) harvest, variety BARJ-4 gave highest yield. Weight loss and sprouting behavior of the sweet potato varieties harvested at different dates varied remarkable during the storage period. The maximum weight loss (52.37%) occurred in Daulatpuri and minimum (37.00%) in occured in BARI-4. The weight loss was highest when the tubers were harvested at 110 DAP. Under Bangladesh context BARl-4 can be gave higher yield both in early and late harvest.

Keywords: Growth, Yield, Storage, Sweet potato

Location: Horticulture Farm, Bangladesh Agricultural University (BAU), Mymensingh

Start Date: 00-11-2000

End Date: 00-05-2001

Program Area: Crop-Soil-Water Management

Commodity: Sweet potato

Objectives:

To select the suitable sweet potato variety for cultivation in Bangladesh;
To study the effect of harvest time on the growth and yield of sweet potato;
To study the morphological features, yield contributing characters and performance of sweet potato varieties harvested at different dates; and
To study the storage ability of sweet potatoes harvested at different dates.

Methodology:

The experiment was conducted at the Horticulture Farm, Bangladesh Agricultural University (BAU), Mymensingh during the period from November, 2000 to May, 2001. Vine cuttings of three improved sweet potato varieties, namely, Daulatpuri, BARl-4 and BARl-5 were used as planting materials. The vines were collected from the Tuber Crops Research Center (TCRC), Bangladesh Agricultural Research Institute (BAR1), Gazipur. Thirty-centimeter long cuttings with 3 - 4 nodes were used for planting. The experiment was set in the randomized complete block design (RCB) with 12 treatment and three replications. Data were collected on different yield contributing characters and yield. The plants of the outer two rows and the extreme ends of the middle rows were excluded from the random selection of plants to avoid the boder effect. Ten plants were randomly selected from each plot to record data. The data obtained for different yield components and yield were statistically analyzed to find out the significance of the difference among the treatments. The analysis was performance by F-test and the significance of the difference between pairs of treatment means was evaluated by the least significant difference (LSD) test, at 5% and 1% level of probability.

Source of Information: Masters Thesis, Dept. of Horticulture, Bangladesh Agricultural University (BAU), Mymensingh

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The results of the present investigation indicated that, harvesting at 150 DAP gave quality yield and better storage performance of the tuberous roots. In case of variety, BARI-4 gave the highest yield and a good storage performance. Both early (110 DAP) and late (170 DAP) harvesting, the variety BARI-4 gave higher yield. The results of the present investigation indicated that, BARI-4 is the suitable sweet potato variety for cultivation in Bangladesh.

Knowledge Management: Thesis