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Standardization of Plot Size for Potato Experimentation

Zobaer Akond
SO
ASICT Division,BARI,Gazipur-1701

Nur Mohammad
SO
ASICT Division, BARI,Gazipur-1701

Kazi Saidur Rahaman
SO
ASICT Division, BARI,Gazipur-1701

Dr. M Saiful Islam
SSO
ASICT Division, BARI,Gazipur-1701

Sajeda Akhter
PSO
TCRC Division

Abstract/ Executive Summary:

A field experiment for determination of standard (optimum) plot size for potato experimentation was conducted during Rabi season of 2011-2012. Five different plot sizes (Treatments) viz., 3m × 3m=9m², 3.5m × 3m=10.5m², 4.25m × 3m=12.75m², 5m × 3m=15m² and 5m × 3.6m=18m² were evaluated in the present study. The mean yield of five different plot sizes (Treatments) was not so different from each other. The highest yield (24.84 t/ha) was from plot size 4.25m×3m=12.75m² and the lowest yield (22.00 t/ha) was from plot size 5m×3m=15m².On the other hand, the yield range variability was almost same for all plot sizes except the plot size 3m×3m. In respect of experimental precision and resources (money, labor, land, time etc.) point of view, plot size 3m ×3m appeared as standard for talking measurement on yield and yield contributing characters of potato.

Keywords: Standardization, Plot size, Potato

Location: TCRC division,BARI

Start Date: 00-00-2011

End Date: 00-00-2012

Program Area: Knowledge Management

Non-commodity: Database Management

Objectives:

To analyze which plot size appeared as optimum for taking measurement on yield contributing characters and yield of potato.

Methodology:

This experiment was conducted at the field of TCRC (Tuber Crop Research Centre) of Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur, during Rabi season of 2011-2012. Five different plot sizes viz., 3m×3m (treatment-1), 3.5m×3m (treatment-2), 4.25m×3m (treatment-3), 5m×3m (treatment-4) and 5m×3.6m (treatment-5) were used in the present study. The experiment was set in a Randomized Completely Block (RCBD) design with three replications. The suitable linear statistical model for this RCBD (assuming various effects are additive in nature) with t treatments (Plots) that are taken randomly and r blocks is stated below: yij = µ + αi+ βj+ ?ij (i = 1, 2, 3,............ ,t) ( j = 1, 2,3,……,r) Where, yij = is the response or the yield of experimental unit from ith treatment and jth block µ =is the general mean effect; αi =is the effect due to ith treatment; βj = is the effect due to jth block or replicate and ?ij = is the error effect due to random component assumed to be independently normally distributed with zero mean and variance σ¬e2, i.e., ?ij are i. i. d. N(0, σ¬e2). Tubers of BARI Alu-8 (Cardinal) variety were sown in rows (between row distance was 60 cm and between tuber distance was 25 cm) in each plot on 07 December, 2011. Recommended various cultivation practices such as fertilization, irrigation, weeding and other intercultural operations were accomplished for crop establishment. Fertilizer doses during experiment were N =160 kg/ha, P=44 kg/ha, K=132 kg/ha, S=15 kg/ha, B=2 kg/ha, Zn=5 kg/ha. Potato was harvested on 12 March, 2012. The yield component data were collected from 10 randomly selected plants prior to harvest from each plot. At harvest the yield data were recorded plot wise excluding border area (1 meter) and analyzed with the help of statistical tools.

Source of Information: Annual report 2012, BARI

Article Link (Online Journal):

Funding Source:

1.	Budget: 10,000/-

Total Budget (Tk.) : 10,000/-

Achievement/Findings:

Plot size 3m ×3m appeared as standard for talking measurement on yield and yield contributing characters of potato.

Knowledge Management: