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Effect of Irrigation and Nitrogen on the Yield of Broccoli

Md. Ekram ul Haque
Principal Scientific Officer
Soil Science Division, BINA, Mymensingh

Dr. A J M S Karim
Professor
Department of soil science, BSMRU (IPSA), Gazipur

Dr. J. Haider
Professor
Department of soil science, BSMRU (IPSA), Gazipur

Dr. T. Hossain
Professor
Department of Crop Botany, BSMRU (IPSA), Gazipur

Abstract/ Executive Summary:

Irrigation (19.30.45% depletion of field capacity moisture (FCM) and nitrogen (60.120 and 180 kg/ha) individually and combindly had significant positive impact on growth and yield of broccoli. The highest levels of irrigation and nitrogen (irrigating at 15% depletion of FCM with 180 kg/ha) gave the highest yield (418.90 t/ha) and the lowest yield (3.29 t/ha) was recorded in the control plots which receives no irrigation of nitrogen. The treatments allowing 15 and 30% depletion of FCM content along with the application of nitrogen (120 and 180 kg/ha) were considered to be obtain satisfactory yield (18.62 and 18.22 t/ha) of broccoli at IPSA farm soil.

Keywords: Irrigation, Nitrogen, Broccoli

Location: IPSA Farm, Gazipur

Start Date: 18-11-1991

End Date: 05-02-1992

Program Area: Crop-Soil-Water Management

Commodity: Water management, Fertilizer

Objectives:

1. To find out the optimum moisture level for broccoli cultivation.

2. To determine the optimum frequency of irrigation in broccoli.

3. To estimate the amount of water for successful production of broccoli and

4. To find out the optimum nitrogen fertilizer dose for maximum broccoli yield in AEZ 28.

Methodology:

Field experiment was conducted at the research farm of Institute of Postgraduate Studies in Agriculture (IPSA) during the winter of 1991-92. The soil was silty loam having pH 604 with low in available nitrogen (0.08%) and medium phosphorus (13.5 ppm). Field capacity moisture (FCM) content, bulk density and particle density were 29.05%, 1.32 and 2.61 gcm^-3respectively. Four irrigation treatments control, 45, 30 and 15% depletion of field capacity moisture (FCM) regimes and 4 levels of nitrogen (0, 60, 120 and 180 kg/ha) in all possible combinations were taken in split-plot design with three replications. Four week seedlings were transplanted at a K₂O (60 kg/ha) was given. Nitrogen as per treatment was applied in 3 equal splits - at transplanting time, at 15 and 30 days after transplanting. All other cultural practices were carried out uniformly.

Source of Information: Bangladesh Hort.,24 (1&2): 53-57,1996

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Based on the research results the following conclusion can be drawn: a) Both irrigation and nitrogen are essential for improving the growth and yield of broccoli in Shallow Red Brown Terrace Soil of IPSA farm, and b) soil moisture depletion of 30% of FC may be allowed together with 180 kg N/ha to obtain the best yield of broccoli in this area. However, further investigations are needed for the confirmation of the study.

Knowledge Management: Journal