EFFECT OF NEEM-OIL COATED PRILLED UREA WITH VARYING THICKNESS OF NEEM-OIL COATING AND NITROGEN RATES ON PRODUCTIVITY AND NITROGEN-USE EFFICIENCY OF LOWLAND IRRIGATED RICE UNDER INDO-GANGETIC PLAINS

2010 ◽  
Vol 33 (13) ◽  
pp. 1939-1959 ◽  
Author(s):  
Dinesh Kumar ◽  
C. Devakumar ◽  
Rajesh Kumar ◽  
Aurovinda Das ◽  
P. Panneerselvam ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Neem Oil ◽  
Nitrogen Use ◽  
Irrigated Rice ◽  
Gangetic Plains ◽  
Varying Thickness ◽  
Prilled Urea ◽  
Use Efficiency ◽  
Nitrogen Rates

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

Yield and nitrogen use efficiency of bell pepper grown in SLAB fertigated with different nitrogen rates

2020 ◽  
Vol 43 (18) ◽  
pp. 2833-2843 ◽  
Author(s):  
Jose Maria da Silva ◽  
Paulo Cezar Rezende Fontes ◽  
Carla do Carmo Milagres ◽  
July Anne Amaral de Abreu
Keyword(s):  
Nitrogen Use Efficiency ◽  
Bell Pepper ◽  
Nitrogen Use ◽  
Use Efficiency ◽  
Nitrogen Rates

Crop management based on multi-split topdressing enhances grain yield and nitrogen use efficiency in irrigated rice in China

2015 ◽  
Vol 184 ◽  
pp. 50-57 ◽  
Author(s):  
Yutiao Chen ◽  
Jing Peng ◽  
Jing Wang ◽  
Penghao Fu ◽  
Yu Hou ◽  
...  
Keyword(s):  
Grain Yield ◽  
Nitrogen Use Efficiency ◽  
Crop Management ◽  
Nitrogen Use ◽  
Irrigated Rice ◽  
Use Efficiency

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

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