scholarly journals Nitrogen use efficiency and rice yield as influenced by the application of prilled urea and urea super granule with or without organic manure

2014 ◽  
Vol 12 (1) ◽  
pp. 37-43
Author(s):  
MR Husan ◽  
MR Islam ◽  
K Faried ◽  
MH Mian
Keyword(s):  
Nitrogen Use Efficiency ◽  
Rice Field ◽  
Poultry Manure ◽  
Organic Manure ◽  
N Recovery ◽  
Nitrogen Use ◽  
Science Field ◽  
Straw Yield ◽  
Prilled Urea ◽  
Use Efficiency

An experiment was conducted to examine the effect of prilled urea (PU), and urea super granule (USG) alone or in combination with poultry manure or cowdung on NH4-N content of rice field with nitrogen use efficiency (NUE) and the yield of rice (cv. BRRI dhan50). The experiment was carried out at the Soil Science Field Laboratory of Bangladesh Agricultural University, Mymensingh during Boro season of 2012 and laid out in a randomized complete block design with three replications. There were six treatments viz. T1 (Control), T2 (78 kg N ha-1 from USG), T3 (136 kg N ha-1 from PU), T4 (58 kg N ha-1 from USG), T5 (58 kg N ha-1M from USG + 3 t ha-1 poultry manure) and T6 (58 kg N ha-1 from USG + 5 t ha-1 cowdung). All plots received recommended doses of P, K, S and Zn fertilizers. The NH4-N in rice field water increased rapidly when N was applied as PU. In contrast, NH4-N release was very slow when applied as USG over the crop growth period. Application of PU, USG alone or in combination with poultry manure or cowdung significantly influenced grain and straw yield, all the yield components except 1000-grain weight of BRRI dhan50. Urea super granule with poultry manure (treatment T5) produced the highest grain and straw yield and the lowest values were recorded from control. Nitrogen content and uptake, apparent N recovery and NUE were also influenced significantly by the application of PU, and USG alone or in combination with organic manure. Among the treatments, T5 demonstrated the highest N recovery and NUE. The overall results suggest that application of USG in combination with poultry manure could be considered more effective for increasing the yield and NUE of BRRI dhan50. DOI: http://dx.doi.org/10.3329/jbau.v12i1.21237 J. Bangladesh Agril. Univ. 12(1): 37-43, June 2014

scholarly journals Nitrogen use efficiency and yield of BRRI dhan49 as influenced by different forms of N fertilizers under AWD condition

2019 ◽  
Vol 6 (1) ◽  
pp. 27-33
Author(s):  
Md Rafiqul Islam ◽  
Snigdha Khatun ◽  
Azmul Huda ◽  
M Mazibur Rahman ◽  
Mahbubul Alam Asad
Keyword(s):  
Grain Yield ◽  
Nitrogen Use Efficiency ◽  
N Use Efficiency ◽  
N Recovery ◽  
Nitrogen Use ◽  
Deep Placement ◽  
Straw Yield ◽  
Prilled Urea ◽  
Use Efficiency ◽  
N Use

An experiment was conducted at the Soil Science Field Laboratory of Bangladesh Agricultural University, Mymensingh during Aman season of 2016 to evaluate the effects of deep placement of N fertilizers in the form of urea super granule (USG) and NPK briquettes in comparison with prilled urea (PU) on nitrogen use efficiency and yield of BRRI dhan49. The soil was silt loam in texture having pH 6.27, organic matter content 1.95% and total N 0.136%. The experiment was laid out in a Randomized Complete Block Design (RCBD) with eight treatments and three replications. The treatments include T1 (Control), T2 (PU, 104 kg N ha-1), T3 (USG, 104 kg N ha- 1), T4 (USG 78 kg N ha-1), T5 (USG, 52 kg N ha-1), T6 (NPK briquettes, 104 kg N ha-1), T7 (NPK briquettes, 78 kg N ha-1) and T8 (NPK briquettes, 52 kg N ha-1). All the treatments except T6, T7 and T8 received 16 kg P and 42 kg K ha-1 from TSP and MoP, respectively. In T6, T7 and T8 treatments, P and K were supplied from NPK briquettes. The PU was applied in three equal splits. The USG and NPK briquettes were deep placed 10 DAT and the briquettes were placed at 8-10 cm depth between four hills at alternate rows. Application of PU, USG and NPK briquette under alternate wetting and drying (AWD) condition exerted significant influence on yield attributes as well as grain and straw yields of BRRI dhan49. The maximum grain yield of 6311 kg ha-1 (100% increases over control) and straw yield of 6956 kg ha-1 was recorded in T3 (USG, 104 kg N ha-1). The second highest grain yield of 5865 kg ha-1 produced by T2 (PU, 104 kg N ha-1) was statistically similar with T4 (USG 78 kg N ha-1) and T6 (NPK briquettes, 104 kg N ha-1). The lowest grain yield (3155 kg ha-1) and straw yield (3908 kg ha-1) were recorded in T1 (Control). The deep placement of USG and NPK briquettes enhanced both the recovery of applied N and N use efficiency in comparison with broadcast application of prilled urea. The T5 (USG, 52 kg N ha-1) showed maximum apparent N recovery, and N use efficiency. Next to T5, the T4 depicted the position in respect of N recovery and N use efficiency. So the application of 78 kg N ha-1 in the form of USG can be recommended for the production of BRRI dhan49. Res. Agric., Livest. Fish.6(1): 27-33, April 2019

scholarly journals Forms and Placement of Nitrogen Fertilizers Influence Nitrogen Use Efficiency and Yield of BRRI Dhan49 under Continuous Flooded Condition

2019 ◽  
Vol 11 (1-2) ◽  
pp. 53-58
Author(s):  
MR Islam ◽  
MP Akhter ◽  
A Huda ◽  
MA Hashem ◽  
MA Asad
Keyword(s):  
Grain Yield ◽  
Nitrogen Use Efficiency ◽  
Organic Matter Content ◽  
Nitrogen Fertilizers ◽  
Nitrogen Use ◽  
Total N ◽  
Deep Placement ◽  
Science Field ◽  
Straw Yield ◽  
Use Efficiency

An experiment was conducted at the Soil Science Field Laboratory of Bangladesh Agricultural University, Mymensingh during Aman season of 2016 to evaluate the effects of deep placement of N fertilizers in the form of USG and NPK briquettes in comparison with PU on nitrogen use efficiency and yield of BRRI dhan49. The soil was silt loam in texture having pH 6.27, organic matter content 1.95% and total N 0.136%. The experiment was laid out in a RCBD with eight treatments and three replications. The PU was applied in three equal splits. The USG and NPK briquettes were deep placed at 10 DAT and the briquettes were placed at 8-10 cm depth between four hills at alternate rows. The maximum grain yield of 5981 kg ha-1 was recorded in T3 which was statistically similar with T2 and T6. The highest straw yield of 6381 kg ha-1 was observed in T3. The lowest grain yield (3265 kg ha-1) and straw yield (4280 kg ha-1) was recorded in T3. The deep placement of USG and NPK briquettes enhanced both the recovery of applied N and N use efficiency in comparison with broadcast application of prilled urea. J. Environ. Sci. & Natural Resources, 11(1-2): 53-58 2018

Time of nitrogen application affects nitrogen use efficiency of wheat in the humid pampas of Argentina

2008 ◽  
Vol 88 (5) ◽  
pp. 849-857 ◽  
Author(s):  
P. A. Barbieri ◽  
H. S. Rozas ◽  
H. E. Echeverría
Keyword(s):  
Grain Yield ◽  
Nitrogen Use Efficiency ◽  
N Recovery ◽  
The South ◽  
N Accumulation ◽  
Nitrogen Use ◽  
Leaching Losses ◽  
South Eastern ◽  
Use Efficiency ◽  
N Rates

Nitrogen (N) fertilization is an important management practice to increased grain yield; however, it is imperative to increase nitrogen use efficiency (NUE) in order to diminish risks of environmental pollution. The objective of this study was to determine the effect of fertilization times on wheat grain yield, grain N accumulation and grain N recovery efficiency (RE) in different sites and years at the south-eastern wheat belt of the Pampas. The experiments were a factorial combination of N rates and fertilization times (sowing and tillering). Grain yield ranged from 1600 to 7900 kg ha-1 and fertilization at tillering increased grain yield compared with fertilization at sowing (5465 vs. 5110 kg ha-1), similar behavior was observed for grain N accumulation (95 vs. 86 kg ha-1) and RE (0.41 vs. 0.32). Predicted grain yield by CERES-Wheat model for different N rates and fertilization times was correlated with observed grain yield (r2 = 0.71). While fertilization at tillering significantly increased grain yield, CERES-Wheat model estimated nitrate leaching losses that ranged from 12 to 62 kg N ha-1 and from 7 to 16 kg N ha-1 for fertilization at sowing and tillering, respectively. However, denitrification losses ranged from 1.2 to 3.9 and from 0.5 to 2.4 kg N ha-1 for fertilization at sowing and tillering, respectively. Leaching losses for fertilization at sowing are a consequence of water excess early in the growing season and would be the main N loss factor. Therefore, N application at tillering is an appropriate strategy to improve NUE in the south-eastern wheat belt of the Pampas. Key words: Wheat, fertilization time, nitrogen use efficiency, N losses, CERES-Wheat

scholarly journals Evaluation of N Efficiency Using Prilled Urea and Urea Super Granules in T. Aman Rice

2015 ◽  
Vol 18 (1) ◽  
pp. 59-63 ◽  
Author(s):  
J Hussain ◽  
M Salim ◽  
MA Siddique ◽  
M Khatun ◽  
S Islam
Keyword(s):  
Nitrogen Use Efficiency ◽  
Rice Varieties ◽  
Marginal Rate ◽  
Nitrogen Use ◽  
Prilled Urea ◽  
N Efficiency ◽  
Use Efficiency ◽  
Marginal Rate Of Return ◽  
Partial Factor Productivity ◽  
Partial Factor

An experiment was conducted at the Experimental field of Department of Agronomy, Bangladesh Agricultural University, Mymensingh, during June to December 2007 to evaluate the nitrogen use efficiency of transplant aman rice using prilled urea (PU) and urea super granule (USG). Three rice varieties (BR11, BRRI dhan30 and BRRI dhan39) were compared at three doses of nitrogen, i.e., PU@125 kg N ha-1, USG @170 kg N ha-1 and USG @ 70 kg N ha-1 in a Randomized Complete Block (RCB) design with three replications. USG each weighing 1 g and 2.6 g were placed manually at the depth of 8-10 cm in the middle of four hills in alternate rows at 12 days after transplanting and PU applied in split applications. The rice var. BR11 at USG @70 kg N ha-1 has produced the maximum grain yield (4.75 t ha-1) which was statistically identical to BRRI dhan30 at USG @ 70 kg N ha-1 (1 g pellet-1). The highest nitrogen use efficiency, partial factor productivity and marginal rate of return (1966%) were recorded from the treatment of BR11 at USG @ 70 kg N ha-1.Bangladesh Agron. J. 2015, 18(1): 59-63

scholarly journals Organic Manure Coupled with Inorganic Fertilizer: An Approach for the Sustainable Production of Rice by Improving Soil Properties and Nitrogen Use Efficiency

Agronomy ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 651 ◽  
Author(s):  
Anas Iqbal ◽  
Liang He ◽  
Aziz Khan ◽  
Shangqin Wei ◽  
Kashif Akhtar ◽  
...  
Keyword(s):  
Grain Yield ◽  
Soil Properties ◽  
Nitrogen Use Efficiency ◽  
Soil Health ◽  
Organic Manure ◽  
Nitrogen Use ◽  
N Fertilizers ◽  
Yield And Quality ◽  
Use Efficiency ◽  
Grain Yield And Quality

The current farming system is heavily reliant on chemical fertilizers, which negatively affect soil health, the environment, and crop productivity. Improving crop production on a sustainable basis is a challenging issue in the present agricultural system. To address this issue, we assumed that the combined use of organic manure and inorganic nitrogen (N) fertilizers can improve rice grain yield and soil properties without the expense of the environment. This study explores the combined effects of cattle manure (CM), poultry manure (PM), and chemical fertilizer (CF) on soil properties, rice growth, physiology, and grain yield and quality. Six treatments in the following combinations were included: T1—no N fertilizer; T2—100% CF; T3—60% CM + 40% CF; T4—30% CM + 70% CF; T5—60% PM + 40% CF; and T6—30% PM + 70% CF. Results showed that across the seasons, treatment T6 increased the net photosynthesis rate, total biomass, grain yield, and amylose content by 23%, 90%, 95%, and 10%, respectively, compared with control. This increment in net photosynthetic rate and growth was the result of 24%, 14%, 19%, and 20% higher total root length, root surface area, root volume, and root diameter, respectively. Improvements in these attributes further enhanced the grain yield and nitrogen use efficiency of rice. No significant difference between T4 and T6 was observed. The correlation analysis also confirmed that root morphological traits were positively correlated with grain yield, N uptake, and biomass accumulation. Similarly, improvement in grain yield and NUE was also associated with improved soil properties, i.e., bulk density, soil porosity, soil organic carbon, and total N under combined organic and inorganic N fertilizers treatment. Conclusively, the integration of 30% N from PM or CM with 70% N from CF (urea) is a promising option not only for higher grain yield and quality of rice but also for improved soil health. This study provides a sustainable nutrient management strategy to improve crop yield with high nutrient use efficiency.

scholarly journals Manure application increased crop yields by promoting nitrogen use efficiency in the soils of 40-year soybean-maize rotation

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Wei Hua ◽  
Peiyu Luo ◽  
Ning An ◽  
Fangfang Cai ◽  
Shiyu Zhang ◽  
...  
Keyword(s):  
Soil Properties ◽  
Nitrogen Use Efficiency ◽  
Crop Yields ◽  
N Use Efficiency ◽  
Organic Fertilizers ◽  
N Recovery ◽  
Nitrogen Use ◽  
Use Efficiency ◽  
N Use

Abstract It is great of importance to better understand the effects of the long-term fertilization on crop yields, soil properties and nitrogen (N) use efficiency in a rotation cropping cultivation system under the conditions of frequent soil disturbance. Therefore, a long-term field experiment of 40 years under soybean-maize rotation was performed in a brown soil to investigate the effects of inorganic and organic fertilizers on crop yields, soil properties and nitrogen use efficiency. Equal amounts of 15N-labelled urea with 20.8% of atom were used and uniformly applied into the micro-plots of the treatments with N, NPK, M1NPK, M2NPK before soybean sowing, respectively. Analyses showed that a total of 18.3–32.5% of applied N fertilizer was taken up by crops in the first soybean growing season, and that the application of manure combining with chemical fertilizer M2NPK demonstrated the highest rate of 15N recovery and increased soil organic matter (SOM) and Olsen phosphorus (Olsen P), thereby sustaining a higher crop yield and alleviating soil acidification. Data also showed that no significant difference was observed in the 15N recovery from residue N in the second maize season plant despite of showing a lower 15N recovery compared with the first soybean season. The recovery rates of 15N in soils were ranged from 38.2 to 49.7% by the end of the second cropping season, and the residuals of 15N distribution in soil layers revealed significant differences. The M2NPK treatment demonstrated the highest residual amounts of 15N, and a total of 50% residual 15N were distributed in a soil layer of 0–20 cm. Our results showed that long-term application of organic fertilizers could effectively promote N use efficiency by increasing SOM and improving soil fertility, and thus leading to an increase in crop yields. This study will provide a scientific reference and guidance for improving soil sustainable productivity by manure application.

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