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Growth and Yield of Sweet Potato at Different Stages of Harvest

P.C. Golder
BARC, Farmgate, Dhaka-1215

M.A. Hossain
Senior Scientific Officer
Tuber Crops Research Centre, BARI, Joydebpur, Gazipur.

Abstract/ Executive Summary:

The study was carried out at the TCRC, BARI, Gazipur during 2001-2002. There was an increasing trend in the harvest index form stage 60 DAP to DAP (Table 9). The mean harvest index of the varieties over stages ranged 14.44 to 33.22 and the stages over the varieties ranged form 12.19 to 31.47. There was a significant interaction effects between the varieties and stages of harvest. Results revealed that the varieties BARI SP-4 and BARI SP-5 were earlier in duration and the photosynthetic produced at the earlier stages were better utilized by the sink parameters enters like number and weight of tubers, In these varieties, harvesting of tubers may be suggested at 120 DAP stage.

Keywords: Growth, Sweet potato,Yield, Stages of harvest.

Location: Joydebpur, Gazipur.

Start Date: 00-00-2001

End Date: 00-00-2002

Program Area: Crop-Soil-Water Management

Commodity: Sweet potato

Objectives:

To study the performance of five sweet potato varieties at different stages of harvest

Methodology:

The study was carried out at the TCRC, BARI, Gazipur during 2001-2002. A split plot design was adopted with three replications. There were five main plot treatments consisting of five varieties viz. Tripti, Kamalasundari, Daulatpuri, BARI SP-4 and BARI SP-5. Each main plot had six subplots of 3.0× 2.4 m of size accommodating 40 Plants in each sub-Plot. The crop was fertilized as per recommendation. During the crop growth Plant samples were collected at random in six different stages at 15 days intervals, commencing form 60 days after planting (DAP) and continued up to 135 days. Length of main vine and weight of foliage per vine was registered at each state of harvest. Yield components viz. number of tubers per Plant, individual tuber weight and weight of tubers per plant were recorded at each stage of harvest. The harvest index was worked out on fresh weight basis.

Source of Information: TCRC, BARI, Annual Report-2001-02

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 18,000/=

Total Budget (Tk.) : 18,000/=

Achievement/Findings:

The varieties BARI SP-4 and BARI SP-5 were earlier in duration and the photosynthetic produced at the earlier stages were better utilized by the sink parameters enters like number and weight of tubers, In these varieties, harvesting of tubers may be suggested at 120 DAP stage.

Knowledge Management: Report/Proceedings