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Yield and Yield Contributing Attributes of Potato as Influenced by Vermicompost and Seed Tuber Size

M Mostofa
Institute of Seed Technology, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

TS Roy
Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

R Chakraborty
Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

Abstract/ Executive Summary:

Low yield is a crucial bottleneck for potato production in Bangladesh. The application of vermicompost may enhance the yield of potato. The experiment has consisted of two factors, i.e., Factor A: - Vermicompost level (Vm_1-4): Vm₁: 0 t ha^-1, Vm₂: 3 t ha^-1, Vm₃: 6 t ha^-1 and Vm₄: 9 t ha^-1; Factor B:- Tuber size (T_1-5): T₁: 5-10 g, T₂: 10-20 g, T₃: 20-30 g, T₄: 30-40 g and T₅: > 40 g. The experiment was conducted in a split-plot design with three replications. Vermicompost had a significant effect on most of the yield contributing parameters investigated under the present study. Results revealed that yield parameters increased with increasing vermicompost level irrespective of tuber size. Among the twenty (20) treatment combinations, vermicompost at the rate of 9 t ha^-1 with tuber size > 40 g produced the maximum yield (31.33 t ha^-1) that was 53.53 % higher than that of control with 3273.01 $ of monetary advantage. Therefore, the present study suggests that potato growers may use vermicompost for increasing the yield of potato in Bangladesh.

Keywords: Potato, Tuber size, Vermicompost, Yield.

Location: Sher-e-Bangla Agricultural University, Dhaka-1207

Start Date: 00-11-2014

End Date: 00-04-2016

Program Area: Crop-Soil-Water Management

Commodity: Potato, Vermicompost and vermiculture

Objectives:

To find out yield and yield contributing attributes of potato as influenced by different levels of vermicompost and seed tuber size derived from first clonal generation of true potato seed.

Methodology:

The experiment was conducted at the research field of Sher-e-Bangla Agricultural University, Dhaka-1207 during the period from November 2014 to April 2015 and November 2015 to April 2016 in the Rabi season. The experimental area was located at 23°77' N latitude and 90°38' E longitude and at an altitude of 8.6 m from the sea level and the area was under the Agro-ecological Zone (AEZ-28) and belonged to the Madhupur Tract (Brammer et al., 1988). The experiment consisted of two factors viz., Factor A: vermicompost level (Vm₁: 0 t ha^- ¹; Vm₂: 3 t ha^-1; Vm₃: 6 t ha^-1; Vm₄: 9 t ha^-1) and Factor B: tuber size (S₁: 5-10 g; S₂: 10-20 g; S₃: 20-30 g; S₄: 30-40 g; S₅: >40 g). The tuber of BARI TPS-1 was used for the present study. The experiment was laid out in a split-plot design with 3 replications. After land preparation the experimental soil was fertilized with a recommended dose of Urea 250 kg ha^-1, Muriate of Potash (MOP) 250 kg ha^-1, Triple Super Phosphate (TSP) 150 kg ha^-1, Gypsum 120 kg ha^-1, Zinc Sulfate 10 kg ha^-1, and Boric Acid 10 kg ha^-1. The total amount of MOP, TSP, Gypsum, Zinc Sulfate, Boric Acid and 50% of the Urea were applied at basal dose during final land preparation. The remaining 50% Urea was side-dressed in two equal splits at 35 and 50 days after planting (DAP) during the first and second earthing up (Mondal et al., 2011). The total amount of vermicompost was applied at seven days before planting as per treatment. The vermicompost was assigned to the main plot and tuber size to the subplot. Distance between row to row was 50 cm and plant to plant was 25 cm. The distance from the plot to the plot was 75 cm. The size of the unit plot was 2 m × 1.5 m. Seed potatoes were planted last week of November and harvested the first week of March. Data on different yield parameters viz., no. of tuber hill^-1, the weight of tuber hill^-1, tuber weight, (t ha^-1), yield (t ha^-1) and marketable yield (t ha^-1), potato yield (t ha^-1), and -seed potato yield (t ha^-1) were determined. Tuber yield increase (%) and monetary advantage were calculated under study by calculating percent (%) tuber yield increase over control. Statistics 10 (2013 version) computer package was used for analysis following ANOVA and means were compared by Least Significant Difference (LSD) at 5% level of probability (Gomez and Gomez, 1984).

Source of Information: SAARC J. Agric., 19(1): 71-79 (2021)

Article Link (Online Journal): DOI: https://doi.org/10.3329/sja.v19i1.54779

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Low yield is a crucial bottleneck for potato production in Bangladesh. The application of vermicompost may enhance the yield of potato. The experiment has consisted of two factors, i.e., Factor A: - Vermicompost level (Vm_1-4): Vm₁: 0 t ha^-1, Vm₂: 3 t ha^-1, Vm₃: 6 t ha^-1 and Vm₄: 9 t ha^-1; Factor B:- Tuber size (T_1-5): T₁: 5-10 g, T₂: 10-20 g, T₃: 20-30 g, T₄: 30-40 g and T₅: > 40 g. The experiment was conducted in a split-plot design with three replications. Vermicompost had a significant effect on most of the yield contributing parameters investigated under the present study. Results revealed that yield parameters increased with increasing vermicompost level irrespective of tuber size. Among the twenty (20) treatment combinations, vermicompost at the rate of 9 t ha^-1 with tuber size > 40 g produced the maximum yield (31.33 t ha^-1) that was 53.53 % higher than that of control with 3273.01 $ of monetary advantage. Therefore, the present study suggests that potato growers may use vermicompost for increasing the yield of potatoes in Bangladesh. but Vm₄T₄ and Vm₃T₅ showed statistically similar yields. Potato growers of Bangladesh can use vermicompost 6 t ha^-1 and tuber size >40 g to get maximum economical potato yield.

Knowledge Management: Journal