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Effect of Fertilizers and Irrigation on Growth and Yield of Kohlrabi

M. R. Bahadur
Upazilla Agriculture Officer
Rajapur, Jhalakati, Department of Agriculture Extension, Ministry of Agriculture, Government of the People’s Republic of Bangladesh

N. H. Patwary
Training Coordinator
Department of Agricultural Extension, Ministry of Agriculture, Government of the People’s Republic of Bangladesh

S. M. Shahidullah
Training Coordinator
Department of Agricultural Extension, Ministry of Agriculture, Government of the People’s Republic of Bangladesh

M. A. Hoque
Upazilla Agriculture Officer
Saturia, Manikgong, Department of Agriculture Extension, Ministry of Agriculture, Government of the People’s Republic of Bangladesh

M. A. Rahman
Professor
Department of Horticulture, Bangladesh Agricultural University Mymensingh-2202

Abstract/ Executive Summary:

An experiment was carried out at the Horticulture Farm, Bangladesh Agricultural University, Mymensingh, during the period from November, 2005 to February, 2006 to investigate the effects of irrigation and fertilizer on growth and yield of Kohlrabi. The experiment consisted of three levels of irrigation at an interval of 7, 14 and 21 days and six fertilizer treatments namely (i) cowdung @ 15 t/ha, (ii) poultry manure @ 9.4 t/ha, (iii) Urea-TSP-MOP @ 326-218-201 kg/ha, (iv) Urea-TSP-MOP-Gypsum @ 326-218-201-55.6 kg/ha, (v) Urea-TSP-MOP-Gypsum-Borax @ 326-218-201-55.6-9.52 kg/ha and (vi) Urea-TSP-MOP-Gypsum-Borax-Zinc Sulphate @ 326-218-201-55.6-9.52-20 kg/ha and was laid down in split plot design with three replications. The plants irrigated at 7-day intervals produced the highest (43.59 t/ha) marketable yield while the lowest (16.80 t/ha) yield was recorded in the treatment of irrigation at 21- day intervals. The highest yield of kohlrabi (35.43 t/ha) was obtained from treatment of Urea-TSP-MOP-Gypsum-Borax-Zinc Sulphate @ 326-218-201-55.6-9.52-20 kg/ha and minimum yield (21.20 t) were found when cowdung @ 15 t/ha was applied. The highest yield per hectare (51.48 t) was obtained from irrigation at 7-day intervals with Urea- TSP-MOP-Gypsum-Borax-Zinc Sulphate @ 326-218-201-55.6- 9.52-20 kg/ha fertilizers.

Keywords: Effects, Irrigation, Fertilizer, Growth, Yield, Kohlrabi

Location: Horticulture Farm, Bangladesh Agricultural University (BAU), Mymensingh

Start Date: 00-11-2005

End Date: 00-02-2006

Program Area: Crop-Soil-Water Management

Commodity: Knolkhol

Objectives:

To evaluate the fertilizers and irrigation as well as the combine effect on growth and yield of kohlrabi.

Methodology:

A field experiment was conducted at the Horticulture Farm, Bangladesh Agricultural University (BAU), Mymensingh during the period from November, 2005 to February, 2006 to study the effect of fertilizers and irrigation on growth and yield of kohlrabi cv. Challenger. Light irrigation was given by a watering cane at every morning and afternoon following transplanting and it was continued for a week for rapid and well establishment. Then irrigation was applied as treatment which was started 10 days after transplanting. There were three treatments i.e., I₁= irrigation at 21-day interval, I₂= irrigation at 14-day interval and I₃= irrigation at 7-day interval. The experiment was also comprised of six fertilizers treatments as F₁ (cowdung @ 15 ton/ha), F₂ (poultry manure @ 9.4 ton/ha), F₃ (Urea-TSP-MOP @ 326-218-201 kg/ha), F4 (Urea-TSP-MOP-Gypsum @ 326-218-20 1-55.6 kg/ha), F5 (Urea-TSP-MOP-Gypsum-Borax @ 326-218-201-55.6-9.52 kg/ha) and F6 (Urea-TSP-MOP-Gypsum-Borax-Zinc Sulphate @ 326-218-201-55.6-9.52-20 kg/ha). The experiment was laid out in split plot design with three replications. The whole experimental area (16.8m x 12.5m) was first divided into three blocks. Then each block was divided into 3 main plots and each main plot was again subdivided into 6 subplots. There were 18 main plots and (3 x 6 x 3) 54 unit plots in total. The size of each unit plot was 1.5 m x l.2 m and 36 plants were accommodated in each plot following a spacing of 25 cm x 20 cm. The total area used for the experiment was 210 square meter. Seedlings were transplanted on 6 December, 2005 and the crop was harvested at 4 February, 2006. Data were taken on eighteen growth and yield parameters. The collected data were analyzed and the differences between the means were evaluated by Duncan's Multiple Range Test (DMRT).

Source of Information: Int. J. Sustain. Crop Prod. 10(2):28-43, 2015

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the experimental findings, it may be concluded that maximum yield/ha (35.84 t/ha) was obtained from Urea-TSP-MOP-Gypsum-Borax-Zinc Sulphate @ 326-218-201-55.6- 9.52-20 kg/ha fertilizers and minimum yield/ha (21.20 t/ha) was found when cowdung @ 15 t/ha was applied. The results of the present study revealed that optimum supply of fertilizers helped to increase yield of kohlrabi. Different irrigation treatments played important role on yield of kohlrabi. The maximum yield/ha (43.59 t/ha) was obtained from the plants irrigation at 7-day intervals. While the lowest yield/ha (16.8 t/ha) was found in the treatment of irrigation at 21-day intervals. The highest yield per hectare (51.48 t/ha) was obtained from irrigation at 7-day intervals with Urea-TSP-MOP-Gypsum-Borax-Zinc Sulphate @ 326-218-201-55.6- 9.52-20 kg/ha fertilizers.

Knowledge Management: Journal