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Effects of Nitrogen and Plant Spacing on the Growth and Yield of Potato

M.F. Zamil
Food and Agriculture Organization of United Nations, Bangladesh

M.G. Rabban
Department of Horticulture Bangladesh Agricultural University Mymensingh-2202 Bangladesh

M.T. Khatun
Agriculture Training Institute, Sherpur, Bangladesh

M. Rahman
Department of Agricultural Extension Education, Bangladesh Agrict:Jitural University, Mymensingh, Bangladesh

Abstract/ Executive Summary:

An experiment was carried out at the Horticulture Farm, Bangladesh Agricultural University, Mymensingh during 1998-99 growing season to study the effect of nitrogen and plant spacing on the growth and yield of potato (var. Diamant). Different nitrogen levels viz. 0, 127.0, 190.5 and 254.0 kg N/ha significantly influenced plant height, foliage coverage, number of main stem per hill, days required for 80% maturity of the crop, fresh weight of haulm (g/hill). number of tubers per hill, weight of tubers per hill, total yield of tubers per hectare and yield of seed and non-seed tubers per hectare. Application of 254.0 kg N/ha gave the highest yield of tubers (24.33 t/ha) and seed tubers (19.14 t/ha). Significant variation was observed due to the effect of the three plant spacings viz. 60 x 15, 60 x 20 and 60 x 25 cm² in respect of the above-mentioned parameters except days required for 80% maturity of the crop and yield of non-seed tubers per hectare. The highest yield of tubers (19.19 t/ha) and seed tubers (15.63 t/ha) was obtained at the closest spacing (60 cm x 15 cm). The combined effect of different levels of nitrogen and plant spacing revealed that 254.0 kg N/ha applied at the closest spacing gave the highest yield of tubers(27.26 t/ha) and seed tubers (21.68 t/ha).

Keywords: Potato, Diamant, Nitrogen, Spacing, Growth, Yield

Location: Horticulture Farm, Bangladesh Agricultural University, Mymensingh

Start Date: 00-00-1998

End Date: 00-00-1999

Program Area: Crop-Soil-Water Management

Commodity: Potato

Objectives:

To study the effect of nitrogen and plant spacing on the growth and yield of potato var. Diamant under Bangladesh Agricultural University farm conditions.

Methodology:

The present study was conducted at the Horticultural Farm, Bangladesh Agricultural University, Mymensingh, during the period from November, 1998 to February, 1999.The experiment was comprised of 4 levels of nitrogen viz. 0, 127.0, 190.5 and 254.0 kg N/ha and 3 levels of plant spacing viz. 60 cm x 15 cm, 60 cm x 20 cm and 60 cm x 25 cm. The two-factor experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. No manure was applied in the experimental plot. Triple Super Phosphate (TSP), Muriate of Potash (MoP) and gypsum at the rate of 185 kg/ha, 250 kg/ha and 75 kg/ha, respectively, were applied as a basal dose . Half of the dose of urea where applicable and rest of all other fertilizers were applied in furrows made 10 cm away from both sides of the seed rows at the time of planting. The remaining half of the dose of urea where applicable was applied as top dressing at 40 days after planting (DAP). Intercultural operations including irrigation and earthing up were done as and when necessary.The crop was harvested 97 days after planting (DAP) on February 27, 1999. Plot yield was converted into yield per hectare. Data on tuber yield and yield contributing characters of potato were recorded 30, 45, 60 and 75 DAP and at harvesting time.

Source of Information: Bangladesh J. Agril. Sci. 33(1): 9-14, January, 2006

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Application of 254.0 kg N/ha gave the highest yield of tubers (24.33 t/ha) and seed tubers (19.14 t/ha).The highest yield of tubers (19.19 t/ha) and seed tubers (15.63 t/ha) was obtained at the closest spacing (60 cm x 15 cm).The combined effect of different levels of nitrogen and plant spacing revealed that 254.0 kg N/ha applied at the closest spacing gave the highest yield of tubers (27.26 t/ha) and seed tubers (21.68 t/ha).

Knowledge Management: Journal