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Growth and Yield of Lettuce (lactuca Sativa L.) Influenced as Nitrogen Fertilizer and Plant Spacing

M. R. Hasan
Department of Horticulture, Sher-e-Bangla Agricultural University, Bangladesh

A.K.M.M. Tahsin
Department of Horticulture, Sher-e-Bangla Agricultural University, Bangladesh

M. N. Islam
Project officer
SEQAEP, DSHE, Ministry of education, Bangladesh

M. A. Ali
Department of Horticulture, Sher-e-Bangla Agricultural University, Bangladesh

J. Uddain*
Department of Horticulture, Sher-e-Bangla Agricultural University, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted in the Research Field of Sher-e-Bangla Agricultural University, Dhaka from October 2014 to February 2015. The present study was conducted to determine the optimum level of nitrogen fertilizer and proper plant spacing for better growth and yield of lettuce. The experiment consisted of two factors. Factor A: Nitrogen (4 levels) N0: 0 (Control); N1: 50; N2: 100 and N3: 150 kg/ha respectively; and Factor B: Plant spacing (3 levels), S1: 40 cm × 20 cm, S2: 40 cm × 25 cm; S3: 40 cm × 30 cm. The Experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. In case of nitrogen the highest yield (29.99 t/ha) was recorded from N3 and lowest (18.65 t/ha) from N0. In case of spacing the highest yield (25.83 t/ha) was achieved from S2 and lowest (23.0 t/ha) from S1. For interaction effect, the highest yield (31.31 t/ha) was obtained from N3S2 and lowest (16.79 t/ha) from N0S1. The highest BCR value (3.88) was recorded from N3S2 and lowest (2.1) from N0S1. So, 150 kg/ha urea with spacing of 40 cm × 25 cm were best for growth and yield of lettuce.

Keywords: Nitrogen, Spacing, Growth, Yield, Lettuce

Location: Research Field of Sher-e-Bangla Agricultural University, Dhaka

Start Date: 00-10-2014

End Date: 00-02-2015

Program Area: Crop-Soil-Water Management

Commodity: Lettuce, Nitrogen

Objectives:

Plant spacing for lettuce cultivation is an important criterion for attaining maximum vegetative growth and an important aspect of crop production for maximizing the yield. Optimum plant spacing ensures judicious use of natural resources and makes the intercultural operations easier. It helps to increase the number of leaves, branches and healthy foliage. Densely planted crop obstruct the proper growth and development. On the other hand, wider spacing ensures the basic nutritional requirements but decrease the total number of plants as well as total yield. Yield may be increased for any crop up to 25% by using optimum spacing in leafy vegetable (Bansal, et al., 1995). Considering the above factors, the present study was undertaken to find out the suitable combination of nitrogen and plant spacing for ensuring the higher yield of lettuce.

Methodology:

The present experiment was carried out in the farm of Sher-e-Bangla Agricultural University, Sher-eBangla Nagar, Dhaka, Bangladesh. The location of the experimental site is 230 74/N latitude and 900 35/E longitude and at an elevation of 8.2 m from sea level (Anon., 1989). Seeds of lettuce cultivar, ‘Grand Raphids’ were used in the experiment. The experiment was laid out in Randomized Complete Block Design with three replications. The experiment consisted of two factors such as factor A: Nitrogen levels, N0: 0 kg/ha (Control), N1: 50 kg/ha, N2: 100 kg/ha, N3: 150 kg/ha and factor B: Plant spacing, S1: 40 cm × 20 cm, S2: 40 cm × 25 cm and S3: 40 cm × 30 cm. There were 12 treatment combinations such as N0S1, N0S2, N0S3, N1S1, N1S2, N1S3, N2S1, N2S2, N2S3, N3S1, N3S2 and N3S3. There were 36 unit plots and the size of the each unit plot was 3.0 m × 1.6 m. The distance maintained between two blocks and two plots were 1.0 m and 0.5 m, respectively.

The data obtained for different parameters were statistically analyzed to find out the significance difference of nitrogen fertilization and plant spacing on yield and yield contributing characters of lettuce. The mean values of all the characters were calculated and analysis of variance was performed by the ‘F’ (variance ratio) test. The significance of the difference among the treatment combinations means was estimated by the Duncan’s Multiple Range Test (DMRT) at 5% level of probability (Gomez and Gomez, 1984).

Source of Information: IOSR Journal of Agriculture and Veterinary Science (IOSR-JAVS) e-ISSN: 2319-2380, p-ISSN: 2319-2372. Volume 10, Issue 6 Ver. I (June. 2017), PP 62-71

Article Link (Online Journal): DOI: 10.9790/2380-1006016271

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

In case of nitrogen the highest yield (29.99 t/ha) was recorded from N3 and lowest (18.65 t/ha) from N0. In case of spacing the highest yield (25.83 t/ha) was achieved from S2 and lowest (23.0 t/ha) from S1. For interaction effect, the highest yield (31.31 t/ha) was obtained from N3S2 and lowest (16.79 t/ha) from N0S1. The highest BCR value (3.88) was recorded from N3S2 and lowest (2.1) from N0S1. So, 150 kg/ha urea with spacing of 40 cm × 25 cm were best for growth and yield of lettuce.

Knowledge Management: Journal