Deep placement of N fertilizers influences N use efficiency and yield of BRRI dhan29 under flooded condition

Hasan, Samia Lutfa; Islam, Rafiqul; Sumon, Mahmud Hossain; Huda, Azmul

doi:10.3329/ajmbr.v2i2.29072

Cited by 7 publications

(4 citation statements)

References 5 publications

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“…NUE represents the response of rice plant in terms of grain yield to N fertilizer. The maximum value of NUE (44.01 kg grain yield increase per kg N applied) was obtained for T 4 which is similar with the findings of (Hasan et al, 2016;Huda et al, 2016). Whereas, the minimum value was found in T 2 where, 14.46 kg grain yield increases for per kg N applied.…”

Section: Nitrogen Use Efficiency (Nue)supporting

confidence: 85%

“…Further, nitrogen fertilizer is costly, thus it is important to minimize the losses of nitrogen fertilizers and maximize the economic utility. Nitrogen use efficiency (NUE) of different rice cultivars such as BRRI dhan1 (Haque and Haque, 2016), BRRI dhan28, BRRI dhan36 (Alim, 2012), BRRI dhan29 (Hasan et al, 2016;Alam et al, 2010) has been studied.…”

Section: Introductionmentioning

confidence: 99%

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Study of nitrogen use efficiency and yield of rice influenced by deep placement of nitrogen fertilizers

et al. 2019

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Continuous increase of nitrogen fertilizer use adversely affecting the soil health as well as the environment. It necessitates the systematic study of the impact of nitrogen (N) fertilizer use-reduction on crop yield. In this article, the effects of deep placement of nitrogen fertilizers on nitrogen use efficiency (NUE) and yield of rice variety “BRRI dhan46” were investigated and compared for three N formulations: urea super granule (USG), NPK briquettes and prilled urea (PU). The experiment was conducted in randomized complete block design (RCBD) with eight N treatments replicated three times. The treatments were applied by varying doses (0, 52, 78 and 104 kg ha-1) of nitrogen fertilizers in a known identical soil and weather condition. Applications of PU, USG and NPK briquettes exhibited significant differences on yield attributes of rice. Results revealed maximum grain yield of 6.391 t ha-1 (54% increases over control) for the dose USG 104 kg ha-1 which is statistically similar to the dose USG 78 kg ha-1 and NPK briquettes 104 kg ha-1. The deep placement of USG and NPK briquettes enhanced both the recovery of applied N and N use efficiency compared to broadcast application of prilled urea. However, USG 78 kg ha-1 showed maximum apparent N recovery, N use efficiency, gross margin and marginal benefit-cost ratio. Thus, an application of 78 kg ha-1 USG can be recommended for profitable cultivation of rice variety BRRI dhan46. SAARC J. Agri., 17(1): 93-103 (2019)

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Section: Nitrogen Use Efficiency (Nue)supporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Study of nitrogen use efficiency and yield of rice influenced by deep placement of nitrogen fertilizers

et al. 2019

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“…Numerous studies have reported that slow-released N fertilizer is an effective management strategy for improving NUE in rice [9,33,34]. When prilled urea is used in flooded conditions, it quickly hydrolyzes and releases more NH 4 + -N in the soil and water over the course of a few days, which promotes N loss through denitrification and volatilization.…”

Section: Discussionmentioning

confidence: 99%

Methods of Urea Fertilizer Application Influence Growth, Yield, and Nitrogen Use Efficiency of Transplanted Aman Rice

Akter

Islam

et al. 2022

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Although urea placed deep reduces nitrogen (N) loss and increases rice yield, its use is not expanding due to the lack of effective application methods. A study was carried out to determine how different urea application techniques affected the yield and nitrogen use efficiency (NUE) of transplanted Aman rice (cv. BRRI dhan46). The experiment was set up in a RCBD design with seven treatments: T1 (deep placement of urea briquettes (DPUB) by hand), T2 (DPUB by battery-powered applicator), T3 (deep placement of prilled urea (PU) briquettes by BRRI applicator), T4 (DPUB by injector applicator), T5 (DPUB by push-type applicator), T6 (broadcast application of PU), T7 (zero-N), and three replications. Findings showed that the NH4+-N concentration in field water peaked on day 3 and then rapidly fell as time passed, while the NO3−-N concentration in the water and soil was minimal. T1 reported the highest grain yield, total N content and uptake, whereas T7 had the lowest values. On T1, the apparent N recovery reached its highest level (73.5%). The NUE varied from 13.26% in T3 to 29.38% in T1. Based on this finding, deep placement of urea briquette by hand is recommended for increasing the yield and NUE of T. Aman rice.

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“…However, urea deep placement (UDP) was already proven to reduce nitrogen losses by as much as 50% than the broadcast method (Huda et al, 2016). The concentration of NH 4 -N in flood water decreases by the deep placement of USG than the broadcast application of PU (Hasan et al, 2016). When compared to a split PU application, placing USG at 8-10 cm depth in the soil can save 30% nitrogen and enhance nutrient uptake, improve soil health, and eventually accelerates crop production (Rahman and Barmon, 2015;Islam et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Effects of nitrogenous fertilizers on rice yield under continuous flooding and alternate wetting and drying conditions

Farzana¹,

Dey²,

Hosenuzzaman³

et al. 2021

JAFE

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In rice cultivation, water and nitrogen saving strategies are becoming more crucial in order to identify efficient and useful crop production and management approaches. A study was conducted at the Soil Science Field Laboratory of Bangladesh Agricultural University, Mymensingh to examine the combined effects of irrigation method and nitrogen fertilizer on yield contributing traits and yield of rice cv. BRRI dhan29. The experiment was set up in a split-plot based on a randomized complete block design with 3 replications and 14 treatment combinations. Two irrigation methods such as continuous flooding (CF) and alternate wetting and drying (AWD) were the main factor while nitrogen fertilizers including prilled urea (PU) and urea super granule (USG) were the sub-factor. The treatment T 6 (USG at 7 DAT) generated the highest plant height (cm), no. of effective tillers hill -1 , panicle length (cm), no. of grains panicle -1 , grain yield and biological yield during AWD condition. In terms of grain yield, the treatment combinations AWD + T 6 and CF + T 7 were statistically equal. In comparison to control, all AWD + USG and CF + PU treatment combinations increased straw yield and harvest index. Under both AWD and CF conditions, USG increased more grain and straw yields compared to PU. So, farmers may be advised to apply USG (216 kg ha -1 ) at 7 DAT under AWD conditions in order to improve rice yield and ensure food security.

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Deep placement of N fertilizers influences N use efficiency and yield of BRRI dhan29 under flooded condition

Cited by 7 publications

References 5 publications

Study of nitrogen use efficiency and yield of rice influenced by deep placement of nitrogen fertilizers

Study of nitrogen use efficiency and yield of rice influenced by deep placement of nitrogen fertilizers

Methods of Urea Fertilizer Application Influence Growth, Yield, and Nitrogen Use Efficiency of Transplanted Aman Rice

Effects of nitrogenous fertilizers on rice yield under continuous flooding and alternate wetting and drying conditions

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