Asian Journal of Crop, Soil Science and Plant Nutrition
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Asian J. Crop. Soil Plan. Nutri. | Volume 07, Issue 01, 263-271 | https://doi.org/10.18801/ajcsp.070122.32
Article type: Research article | Received: 03.04.2020; Revised: 26.05.2020; First published online: 30 July, 2022.
Article type: Research article | Received: 03.04.2020; Revised: 26.05.2020; First published online: 30 July, 2022.
Comparative assessment of applicators for urea deep placement in transplanted rice fields
Md. Asaduzzaman Khan 1, Yam Kanta Gaihre 2 and Arifur Rahman 1
1 Department of Soil Science, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh.
2 International Fertilizer Development Center (IFDC), Dhaka 1212, Bangladesh.
✉ Article correspondence: makhan@sau.edu.bd (Khan, MA).
1 Department of Soil Science, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh.
2 International Fertilizer Development Center (IFDC), Dhaka 1212, Bangladesh.
✉ Article correspondence: makhan@sau.edu.bd (Khan, MA).
Abstract
A field experiment was conducted at Sher-e-Bangla Agricultural University Farm, Dhaka from December 2015 to April 2016 to evaluate the performance of urea deep placement applicators and observe the yield of boro rice. The experiment consisted of a single factor and the treatments were N0 = Control; UDP-hand = Hand deep placement of urea briquette; SRP-Battery = Deep placement of urea briquette by battery-powered applicator; PU- applicator = Prilled urea deep placement by BRRI applicator; Injector = Deep placement of Urea briquette by injector type applicator; SRP = Deep placement of urea briquette by push- type applicator; PU-broadcast = Prilled urea application by broadcast method. The experiment was laid out in randomized complete block design with three replications. The plant height, number of effective tillers hill-1, grain and straw yield were significantly affected by nitrogen sources and application methods. The application of PU-applicator treatment showed the highest grain and straw yield. Nitrogen sources and application methods significantly affected NH4+ concentration in standing water and soils. Higher levels of soil ammonium concentrations were seen in the treatment of prilled urea applicator during 1–7 days of soil sample collection, while higher levels of water ammonium concentrations were identified in the PU-broadcast treatment. Significantly favorable associations between rice grain production and soil ammonium were found. The findings demonstrated that deep application of pelleted urea using a BRRI applicator outperformed other nitrogen sources and application techniques to increase boro rice grain production.
Key Words: Urea briquette, Prilled urea, Applicators, Ammonium and Rice yield
A field experiment was conducted at Sher-e-Bangla Agricultural University Farm, Dhaka from December 2015 to April 2016 to evaluate the performance of urea deep placement applicators and observe the yield of boro rice. The experiment consisted of a single factor and the treatments were N0 = Control; UDP-hand = Hand deep placement of urea briquette; SRP-Battery = Deep placement of urea briquette by battery-powered applicator; PU- applicator = Prilled urea deep placement by BRRI applicator; Injector = Deep placement of Urea briquette by injector type applicator; SRP = Deep placement of urea briquette by push- type applicator; PU-broadcast = Prilled urea application by broadcast method. The experiment was laid out in randomized complete block design with three replications. The plant height, number of effective tillers hill-1, grain and straw yield were significantly affected by nitrogen sources and application methods. The application of PU-applicator treatment showed the highest grain and straw yield. Nitrogen sources and application methods significantly affected NH4+ concentration in standing water and soils. Higher levels of soil ammonium concentrations were seen in the treatment of prilled urea applicator during 1–7 days of soil sample collection, while higher levels of water ammonium concentrations were identified in the PU-broadcast treatment. Significantly favorable associations between rice grain production and soil ammonium were found. The findings demonstrated that deep application of pelleted urea using a BRRI applicator outperformed other nitrogen sources and application techniques to increase boro rice grain production.
Key Words: Urea briquette, Prilled urea, Applicators, Ammonium and Rice yield
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MLA
Khan, M. A. “Comparative assessment of applicators for urea deep placement in transplanted rice fields”. Asian Journal of Crop, Soil Science and Plant Nutrition, 07(01), (2022): 263-271.
APA
Khan, M. A., Gaihre, Y. K. and Rahman, A. (2022). Comparative assessment of applicators for urea deep placement in transplanted rice fields. Asian Journal of Crop, Soil Science and Plant Nutrition, 07(01), 263-271.
Chicago
Khan, M. A., Gaihre, Y. K. and Rahman, A. “Comparative assessment of applicators for urea deep placement in transplanted rice fields”. Asian Journal of Crop, Soil Science and Plant Nutrition, 07(01), (2022): 263-271.
Harvard
Khan, M. A., Gaihre, Y. K. and Rahman, A. 2022. Comparative assessment of applicators for urea deep placement in transplanted rice fields. Asian Journal of Crop, Soil Science and Plant Nutrition, 07(01), pp. 263-271.
Vancouver
Khan, MA, Gaihre, YK and Rahman, A. Comparative assessment of applicators for urea deep placement in transplanted rice fields. Asian Journal of Crop, Soil Science and Plant Nutrition, 2022 July 07(01), 263-271.
Khan, M. A. “Comparative assessment of applicators for urea deep placement in transplanted rice fields”. Asian Journal of Crop, Soil Science and Plant Nutrition, 07(01), (2022): 263-271.
APA
Khan, M. A., Gaihre, Y. K. and Rahman, A. (2022). Comparative assessment of applicators for urea deep placement in transplanted rice fields. Asian Journal of Crop, Soil Science and Plant Nutrition, 07(01), 263-271.
Chicago
Khan, M. A., Gaihre, Y. K. and Rahman, A. “Comparative assessment of applicators for urea deep placement in transplanted rice fields”. Asian Journal of Crop, Soil Science and Plant Nutrition, 07(01), (2022): 263-271.
Harvard
Khan, M. A., Gaihre, Y. K. and Rahman, A. 2022. Comparative assessment of applicators for urea deep placement in transplanted rice fields. Asian Journal of Crop, Soil Science and Plant Nutrition, 07(01), pp. 263-271.
Vancouver
Khan, MA, Gaihre, YK and Rahman, A. Comparative assessment of applicators for urea deep placement in transplanted rice fields. Asian Journal of Crop, Soil Science and Plant Nutrition, 2022 July 07(01), 263-271.
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Asian Journal of Crop, Soil Science and Plant Nutrition EISSN 2706-5510.