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Dry Matter and Storage Quality of Different Potato Varieties at Varied Haulm Pulling Dates

M. A. Hoque
Department of Horticulture, BSMRAU, Salna, Gazipur-1706

M. S. Sultana
Department of Horticulture, BSMRAU, Salna, Gazipur-1706

M. N. U. Ahmed
Tuber Crops Research Sub Centre, BARI, Munshiganj

M. R. lslam
Department of Botany, B. M. College, Barisal

U. Habiba
Department of Botany, Shahid Smriti College, Muktagacha, Mymensingh

Abstract/ Executive Summary:

An investigation was conducted al the Tuber Crops Research Sub Centre, Munshiganj of BARI during 2008-2009 and 2009-2010 potato growing season with four varieties viz. Asterix, Granola, Felsina and Lady Rosella to see the dry matter and storage quality of tubers at varied haulm pulling dates (75. 80 and 85 OAP). Haulm pulling had no significant effect on yield of tubers but it had a significant effect on dry matter. Dry matter was recorded highest (21.2%) when haulm was pulled out at 80 DAP and it was the lowest (19.91%) when no haulm pulling was practiced. All the studied varieties performed better under natural storage when haulm pulling was done on 80 or 85 DAP. Among the varieties, Felsina performed the worst when stored under natural condition and 44.081k cumulative weight loss was recorded at 150 DAS. Total rottage loss was also higher in Felsina at 150 DAS (17.68%). All other three varieties performed better in this respect when the haulm pulling was done at 80 or 85 DAP. The variety Felsina was not suitable for storage under natural condition; while Asterix, Granola and Lady Rosella was found better upto 120 days after storage under natural condition.

Keywords: Potato, Haulm pulling, Dry matter, Natural storage.

Location: Tuber Crops Research Sub Centre (TCRSC), BARI, Gazipur

Start Date: 26-11-2009

End Date: 25-11-2010

Program Area: Crop-Soil-Water Management

Commodity: Potato

Objectives:

To observe the effect of haulm pulling at different dates on dry matter and storage quality of different potato varieties; and
To find out the suitable haulm pulling date for high dry matter and increased storability under natural condition.

Methodology:

The experiment has been conducted with 4 variety (Asterix, Granola, Felsina and Lady Rosetta) with 4 haulm pulling dates viz. haulm pulling at 75 days after planting (DAP), 80 DAP, 85 OAP and no haulrn puling. The experiment was set on 26th November in 2009 and 25th November in 2010 at the research field of the Tuber Crops Research Sub Centre (TCRSC), Munshiganj following RCBD (Factorial) with 3 replications. Tubers were harvested on 28th February in 2010 and 271h February 2011, respectively in all treatments (i.e., at 90 DAP). Unit plot size was 3.0m X 3.0m and the spacing was 60 cm X 25 cm. At the time of land preparation cowdung @ 10 t/ha was applied. Fertilizers were applied @ 350kg urea, 220kg TSP, 260 kg MP, 120 kg Gypsum, 14 kg ZnS0₄ and 6 kg Boric Acid per hectare. Half of Urea and full dose of other fertilizers were applied immediately before planting the seed in furrows and mixed properly with the soil. The rest amount of urea was top dressed at 35 days after planting of tubers (A non., 2010).

Source of Information: Ann. Bangladesh Agric. (2010) 14( 1&2 ): 33-41

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Haulm pulling has no significant effect on tuber yield in potato but it has a significant effect on dry matter and storage quality under natural condition. Haulm should be pulled out within 80-85 days after planting of potato for increased dry matter and for better storage under natural condition. The potato variety Felsina should not be stored under natural condition and Asterix, Granola and Lady Rosetta can be stored upto 120 days under natural condition.

Knowledge Management: Journal