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Urea Super Granule: a Good Source of Nitrogen on Growth Yield and Profitability of Cabbage in Sylhet

M. M. R. Sarker
On-Farm Research Division, Bangladesh Agricultural Research Institute, Gazipur

M. R. Shaheb
On-Farm Research Division, Bangladesh Agricultural Research Institute, Sylhet

M. I. Nazrul
On-Farm Research Division, Bangladesh Agricultural Research Institute, Sylhet

Abstract/ Executive Summary:

An experiment was conducted in Sylhet under AEZ-20 (Eastern Surma-Kushiyara Floodplain) during 2007-08 and 2008-09 to find out the effect of Urea Super Granule (USG) on cabbage. There were five treatments viz. T₁: recommended nitrogen (N) dose as prilled urea (PU), T₂: recommended N dose as USG, T₃: 10% less than recommended dose of N as USG, T₄: 20% less than recommended dose of N as USG, and T₅: farmers practice (average of 20 farmers N dose used as PU) used in the experiment. Results revealed that yield of cabbage increased significantly due to application of USG over PU. The highest head yield of cabbage 92.04 and 91.36 t ha^-1 were obtained from the USG (recommended dose) in 2007-08 and 2008-09, respectively which was statistically similar with USG 10% less than recommended dose (84.78 t ha^-1) instead of traditional PU. The treatments T₃ and T₄were found more effective over PU, and N loss was also minimum than that of prilled urea where 10-20% N fertilizer could be saved by using USG instead of traditional PU. Regarding economic analysis, the higher returns were also obtained from the treatment T₂which was more profitable in terms of higher gross returns as well as Benefit Cost Ratio (BCR).

Keywords: BCR, Cabbage, Head yield, Prilled urea, USG

Location: Sylhet under AEZ-20 (Eastern Surma-Kushiyara Floodplain)

Start Date: 00-11-2007

End Date: 00-04-2008

Program Area: Crop-Soil-Water Management

Commodity: Cabbage

Objectives:

1. To verify the effect of USG on the growth and yield of cabbage and to compare the effectiveness of USG over existing practice (PU) along with to observe the farmers perception on USG application on cabbage.

Methodology:

The experiment was carried out at Sylhet under AEZ- 20 during the two consecutive years of 2007-08 and 2008-09 to evaluate the effect of USG application on the growth and yield of cabbage. The experiment included 5 treatments viz. T₁: recommended N dose as PU, T₂: recommended N dose as USG, T₃: 10% less than recommended dose of N as USG, T₄: 20% less than recommended dose of N as USG, and T₅: farmers practices (average of 20 farmers N dose used as PU). To know the nutrient status of the experimental soil, a composite soil sample (0-15 cm depth) was collected and analyzed it at Soil Resources and Development Institute (SRDI) laboratory, Sylhet. The experiment was laid out in a Randomized Complete Block Design (RCBD) with six replications. According to soil analysis data, the doses of different plant nutrients were calculated by using fertilizer recommendation guide 2005. The unit plot size was 6 m x 5 m and plant spacing was 75 cm x 60 cm. Twenty five days old seedlings of cabbage (var. Atlas-70) were transplanted on 22-25 November for both the years 2007-08 and 2008-09. All fertilizers and ?rd of MoP were applied during the final land preparation except PU and USG and mixed thoroughly with soil. USG was applied 15 Days After Transplanting (DAT) as ring method, 10 cm apart from plant stalk, and 8cm depth covering with soil]. PU was applied as ring method in three equal splits one each at 10, 20 and 30 DAT, respectively. The rest 2/3rd of MoP were applied in two times viz: 20 DAT and at the heading stage following ring method for all the treatments. But in farmers practice, all fertilizers were applied during the final land preparation. Intercultural operations viz. weeding, irrigation and spraying insecticides were done as and when required in order to support normal cabbage growth and development. The crop was harvested after full maturity. The data on head yield and different yield components of cabbage were recorded from 5 randomly selected plants in each plot and then plot wise yield was measured. The collected data were analyzed statistically following the ANOVA technique with the help of MSTAT-C software. The mean differences among the treatment means were adjudged by Least Square Difference (LSD). Cost and return analysis of different treatments were done for Benefit Cost Ratio (BCR). Gross return was calculated from two years mean yield of Cabbage.

Source of Information: J. Environ. Sci. & Natural Resources, 5(1): 295-299, 2012; ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The highest head yield of cabbage 92.04 and 91.36 t ha^-1 were obtained from the USG (recommended dose) in 2007-08 and 2008-09, respectively which was statistically similar with USG 10% less than recommended dose (84.78 t ha^-1) instead of traditional PU.

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