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Effect of Urea Super Granule on the Performance of Cabbage in Young Jamuna and Brahmaputra Floodplain Soils of Tangail

M. J. HUSSAIN
Scientific Officer
OFRD, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur

M. Y. ALI
Principal Scientific Officer
OFRD, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur

M. A. RAHMAN
Scientific Officer
OFRD, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur

M. A. QUAYYUM
Chief Scientific Officer,
OFRD, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur

D. A. CHOUDhURY
Senior Scientific Officer,
OFRD, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur

Abstract/ Executive Summary:

A number of experiments were conducted at the Farming Systems Research and Development (FSRD) site, Palima, Tangail for three consecutive years to evaluate the efficiency of USG application in comparison with prilled urea on the yield and yield attributes of cabbage (cv. Atlas-70). There were five treatments, T₁= N₁₉₅ (recommended N dose for HYG, used as prilled urea), T₂= N₁₉₅ (recommended N dose for HYG, used as USG), T₃=N₁₇₅ (N 10% reduction of recommended N dose as USG), T₄= N₁₅₅ (N 20% reduction of recommended N dose as USG), and T₅= N₁₀₅ (Farmers’ N dose used as prilled urea). Treatments T_l-T₄ received recommended dose of other nutrients (P₅₆K₁₆₂S₁₃Mo_0.6CD_3t) and T₅ received P₂₅K₉₀S₀Mo₀CD_5t Yield and yield-contributing characters of cabbage significantly responded to the application of USG. The highest head yield (78.1 t/ha) was obtained with the recommended dose of N as USG, and 10% (77.1 t/ha), and 20% (72.0 t/ha) less than the recommended dose of N as USG also produced higher yield than recommended prilled urea-N. Application of USG was found more efficient than prilled urea and the treatment N₁₉₅P₅₆K₁₆₂S₁₃Mo_0.6CD_3t(recommended N as USG for HYG) was found profitable for cabbage cultivation in terms of yield and the treatment N₁₇₅P₅₆K₁₆₂S₁₃Mo_0.6CD_3t (10% N reduction of recommended N dose as USG) was found profitable in terms of economic returns.

Keywords: USG, Prilled urea, Cabbage

Location: Farming Systems Research and Development (FSRD) site, Palima, Tangail

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Cabbage

Objectives:

The present study was undertaken to evaluate the efficiency of USG in comparison with prilled urea and also to determine the optimum dose of USG with respect to yield and yield attributes of cabbage.

Methodology:

The experiment was carried out in the medium highland of AEZ-8 (Young Jamuna and Brahmaputra Floodplain) at the Farming Systems Research and Development site, Palima, Tangail of Bangladesh Agricultural Research Institute (BARI) during rabi seasons of 2000-2001, 2001- 2002 and 2002-2003. Prior to experimentation of 2000-01, the soil was analyzed for different properties. Soil is slightly acidic (pH 5.8) with medium contents of organic matter (1.72%), very low content of total N (0.072%), and P (5.20 μg/g), low k (0.lcrnol/kg, S 13 (μg/g), B (0.91 μg/g), and high Zn (7.53 μg/g). The experiment was laid out in a randomized compete block design (RCBD) having 6 dispersed replications. Five treatments were T₁= N₁₉₅ (recommended dose for HYG, N as prilled urea), T₂= N₁₉₅ (recommended dose for HYG, N as USG), T₃= N₁₇₅ (N 10% reduction of recommended N dose as USG), T₄= N₁₅₅ (N 20% reduction of recommended N dose as USG), and T₅ = N₁₀₅ (Farmers’ N dose, N as prilled urea). Farmers’ dose was identified by the average dose of 30 farmers’ practice in that area. Treatments T₁=T₄ received 56 kg P, 162 kg K, 13 kg S, 0.6 kg Mo, and 3 tons of CD per ha (all recommended dose). The doses for farmer’s practice (T₅) were 25 kg P, 90 kg K, 0 kg S, 0 kg Mo, and 5 tons CD per ha. Moreover, a common dose of boron fertilizer was applied @ 1 kg B/ha for all the treatments. The unit plot size was 8 m × 5 m. and variety was Atlas-70. Seedlings were transplanted at a spacing of 45 cm × 60 cm for plant-plant and line-line, respectively. Transplantation was done with 30-day-old seedlings in the first week of November every year. Fertilizers were calculated on the basis of soil test values (FRG, 1997). Except prilled urea and USG, all other fertilizers and 50% MoP were applied during final land preparation. For each year, USG was applied at 10 days after transplanting (DAT), in ring method as 9-10 cm apart from the seedling base and at 7-8 cm depth in soil. Prilled urea was applied as 3 equal splits at 10 DAT, 25 DAT, and 35 DAT (head initiation stage) and covered with soil properly. Rest 50% MoP was applied with USG and prilled urea at 10 days after transplanting. Three irrigation were applied at 15, 25, and 40 DAT. Two weeding and mulching were done at 20 and 30 DAT. The crop was also free from pest attack. Harvesting was started in January and continued upto the end of February. Data on yield and yield contributing characters were recorded from 10 plants selected randomly for each plot and total yield was calculated by multiplying average plant yield with plant population. Data were collected and analyzed statistically using MSTAT-C package and means were separated by DMRT at 5% level of significance.

Source of Information: Bangladesh J. Agril. Res. 35(2) : 267-272, June 2010 ISSN 0258-7122

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Economic evaluation of different treatments has been calculated. Though higher cost was involved in USG practice and 10% less USG than recommended dose in comparison with prilled urea, the highest gross margin (Tk.1l7588) was obtained from the N recommended dose of N as USG among the treatments. Even 10% and 20% < rec. USG showed higher gross return (Tk.190342 and Tk. 189286) and gross margin (Tk. 116847 and Tk. 105904) than prilled urea and farmers’ dose. The highest and similar benefit cost ratio (BCR) of 2.61 was achieved from USG use as a source of N and USG 10% < recommended dose. But the lowest BCR was resulted from prilled urea treatment due to higher fertilizer cost and lower yield performance. MBCR was also higher in USG treated plot and the highest MBCR (12.83) was obtained from USG 10% < rec. dose followed by recommended USG dose. The present study indicates that USG, as a source of N is more efficient than that of prilled urea. Therefore, 175 to 195 kg N as USG i.e., 10-12 balls of USG (0.90 g/ball) per plant, placing 9-10 cm apart from plant base and 7-8 cm depth in soil as ring method at 10 DAT along with other fertilizers as N₁₇₅ P₅₆ K₁₆₂ S₁₃Mo_0.6 CD_3t(N l0% < Recommended dose as USG) to N₁₉₅ P₅₆K₁₆₂ S₁₃ Mo_0.6 CD_3t (Recommended dose for HYG, N as USG) was found the most suitable dose for obtaining the maximum yield and economic benefit in cabbage cultivation in the Young Jamuna and Brahmaputra Flood plane soils of Tangail in Bangladesh.

Knowledge Management: Journal