Field-level comparison of nitrogen rates and application methods on maize yield, grain quality and nitrogen use efficiency in a humid environment

2015 ◽  
Vol 39 (5) ◽  
pp. 727-741 ◽  
Author(s):  
B. L. Ma ◽  
D. K. Biswas
Keyword(s):  
Nitrogen Use Efficiency ◽  
Grain Quality ◽  
Maize Yield ◽  
Nitrogen Use ◽  
Humid Environment ◽  
Field Level ◽  
Use Efficiency ◽  
Application Methods ◽  
Nitrogen Rates

Maize yield, rainwater and nitrogen use efficiency as affected by maize genotypes and nitrogen rates on the Loess Plateau of China

2019 ◽  
Vol 213 ◽  
pp. 996-1003 ◽  
Author(s):  
Shengcai Qiang ◽  
Yan Zhang ◽  
Junliang Fan ◽  
Fucang Zhang ◽  
Youzheng Xiang ◽  
...  
Keyword(s):  
Loess Plateau ◽  
Nitrogen Use Efficiency ◽  
Maize Yield ◽  
The Loess Plateau ◽  
Nitrogen Use ◽  
Maize Genotypes ◽  
Use Efficiency ◽  
Nitrogen Rates

Effect of in-season application methods of fertilizer nitrogen on grain yield and nitrogen use efficiency in maize

2004 ◽  
Vol 84 (2) ◽  
pp. 169-176 ◽  
Author(s):  
B. L. Ma ◽  
M. Li ◽  
L. M. Dwyer ◽  
G. Stewart
Keyword(s):  
Grain Yield ◽  
Nitrogen Use Efficiency ◽  
Dry Matter ◽  
Foliar Spray ◽  
Soil N ◽  
Nitrogen Use ◽  
N Application ◽  
Maize Hybrids ◽  
Use Efficiency ◽  
Application Methods

Little information is available comparing agronomic performance and nitrogen use efficiency (NUE) for N application methods such as foliar spray, soil application, and ear injection in maize (Zea mays L.). The objective of this study was to investigate the effects of various N application methods on total stover dry matter, grain yield, and NUE of maize hybrids using a 15N-labeling approach. A field experiment was conducted on a Dalhousie clay loam in Ottawa and a Guelph loam in Guelph for 2 yr (1999 and 2000). Three N application methods were tested on two maize hybrids, Pioneer 3893 and Pioneer 38P06 Bt. At planting, 60 kg N ha-1 as ammonium nitrate was applied to all treatments. In addition, 6.5 kg N ha-1 and 13.5 kg N ha-1 as 15N-labeled urea were applied to either foliage (Treatment I) or soil (Treatment II) at V6 and V12 stages, respectively. In Treatment III, 20 kg N ha-1 as 15N-labeled urea was injected into space between ear and husks at silking. The results showed that compared with soil N application neither foliar spray nor injection through ear affected grain yield or stover dry matter. The NUE values ranged from 12 to 76% for N fertilizer applied at V6 a nd V12 stages, or at silking for all treatments. There was no interaction of hybrid × N application methods on any variables measured with the only exception that for soil N application, grain NUE in Pioneer 38P06 Bt was significant higher than in Pioneer 3893. The difference in total N and NUE of grain and stover between soil N application and foliar N spray was inconsistent. However, NUE was substantially higher for N injection through the ear than for foliar or soil application without differential responses between the two hybrids. Nitrogen injection through the ear at silking might have altered N redistribution within the plant and improved NUE. Hence, it can potentially enhance grain protein content. Foliar N spray is not advocated for maize production in Ontario. Key words: Maize, Zea mays, nitrogen application methods, nitrogen-15, yield, nitrogen use efficiency

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

scholarly journals Timing and rate of nitrogen fertilization influence maize yield and nitrogen use efficiency

PLoS ONE ◽  
2020 ◽  
Vol 15 (5) ◽  
pp. e0233674
Author(s):  
Benjamin Davies ◽  
Jeffrey A. Coulter ◽  
Paulo H. Pagliari
Keyword(s):  
Nitrogen Use Efficiency ◽  
Nitrogen Fertilization ◽  
Maize Yield ◽  
Nitrogen Use ◽  
Use Efficiency

Maize yield response, nitrogen use efficiency and financial returns to fertilizer on smallholder farms in southern Africa

Food Security ◽  
2017 ◽  
Vol 9 (3) ◽  
pp. 577-593 ◽  
Author(s):  
Bashir Jama ◽  
David Kimani ◽  
Rebbie Harawa ◽  
Abednego Kiwia Mavuthu ◽  
Gudeta W. Sileshi
Keyword(s):  
Southern Africa ◽  
Nitrogen Use Efficiency ◽  
Maize Yield ◽  
Yield Response ◽  
Financial Returns ◽  
Nitrogen Use ◽  
Smallholder Farms ◽  
Use Efficiency

YIELD, NITROGEN USE EFFICIENCY AND GRAIN QUALITY IN DURUM WHEAT AS AFFECTED BY NITROGEN FERTILIZATION UNDER A MEDITERRANEAN ENVIRONMENT

2015 ◽  
Vol 52 (2) ◽  
pp. 314-329 ◽  
Author(s):  
ANITA IERNA ◽  
GRAZIA MARIA LOMBARDO ◽  
GIOVANNI MAUROMICALE
Keyword(s):  
Grain Yield ◽  
Durum Wheat ◽  
Nitrogen Use Efficiency ◽  
Nitrogen Fertilization ◽  
Grain Quality ◽  
Nitrogen Efficiency ◽  
Yield Response ◽  
Wheat Crop ◽  
Nitrogen Use ◽  
Use Efficiency

SUMMARYLimited information is available concerning the influence of nitrogen fertilization jointly on yield response, nitrogen use efficiency (NUE) and grain quality of durum wheat under semi-arid Mediterranean conditions. The study focused on evaluating, through a systematic study, over three seasons in southern Italy the effects of three nitrogen fertilization rates (0, 80 and 160 kg N ha−1– N0, N80and N160), on grain yield, yield components, nitrogen efficiency indices and grain quality characteristics of three durum wheat genotypes (‘Creso’, ‘Trinakria’ and ‘Line 25’) from different breeding eras to achieve a more sustainable fertilization management of the durum wheat crop. We found that nitrogen fertilization at 80 kg N ha−1was able to maximize the yield performances (2.1 t ha−1year–1) of the crop and keep NUE index at an acceptable level (16.3 kg kg−1). On the other hand, nitrogen fertilization at 160 kg N ha−1improved grain quality measured through protein (up to 14.3%) and dry gluten concentration (up to 12.8%), but had a detrimental effect on grain yield and nitrogen efficiency. Among the genotypes studied, ‘Trinakria’ showed the greatest potential to utilize nitrogen fertilization to improve grain yield and NUE (at N80) and quality (at N160), ‘Line 25’ made good use of N80both for yield and quality, whereas ‘Creso’ proved wholly unresponsive to nitrogen. The effect of N fertilization on grain yield and N use efficiency depends on rainfall distribution, giving the best results when about 80% of total rainfall occurred from sowing to heading. Overall, our data show that in seasons with regular rainfall in quantity and distribution, combining no more than 80 kg ha−1of nitrogen fertilization with genotypes characterized by a more efficient response to nitrogen, is a useful tool to improve the agronomic and quality performance of the crop, ensuring, at the same time, a more environment-friendly nitrogen fertilization.

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