Starter Nitrogen Fertilizer Affects Rice Growth and Nitrogen Uptake but Not Grain Yield

cftm ◽  
2018 ◽  
Vol 4 (1) ◽  
pp. 1-5
Author(s):  
Jason M. Satterfield ◽  
Gurpreet Kaur ◽  
Bobby R. Golden ◽  
John M. Orlowski ◽  
Timothy W. Walker
Keyword(s):  
Grain Yield ◽  
Nitrogen Uptake ◽  
Nitrogen Fertilizer ◽  
Rice Growth

Effects of time, cultivation and urea on nitrogen stress and yield of wheat in a low rainfall area of Western Australia

1970 ◽  
Vol 10 (47) ◽  
pp. 763 ◽  
Author(s):  
EAN Greenwood ◽  
WJR Boyd ◽  
JA Whitehead ◽  
ZV Titmanis
Keyword(s):  
Growth Rate ◽  
Grain Yield ◽  
Nitrogen Content ◽  
Western Australia ◽  
Nitrogen Uptake ◽  
Nitrogen Fertilizer ◽  
Vegetative Stage ◽  
Nitrogen Stress ◽  
Promising Technique ◽  
Do So

Wheat was grown where nitrogen fertilizer does not usually produce a large increase in grain yield. Urea was applied at sowing at rates from 0-75 kg N per hectare and the crop was sown either after cultivation or without cultivation but with the weed controlled with herbicides-a promising technique for earlier planting. Estimates of weeds and growth, nitrogen content, nitrogen stress, and grain yield of the crop were made at appropriate times. Maximum nitrogen stress occurred during tillering. The response by grain yield to urea was small and could be explained only in part by the relatively low values of nitrogen stress at that time. Where cultivation was replaced by herbicides, nitrogen stress was greater and growth rate, nitrogen uptake and grain yield were lower. Application of 75 kg N/ha at sowing compensated for lack of cultivation during the vegetative stage but did not fully do so for grain yield.

Long-term Productivity of Intensive Rice Cropping Systems on the Central Plain of Thailand

1977 ◽  
Vol 13 (4) ◽  
pp. 305-315 ◽  
Author(s):  
J. J. Walcott ◽  
M. Chauviroj ◽  
A. Chinchest ◽  
P. Choticheuy ◽  
R. Ferraris ◽  
...  
Keyword(s):  
Grain Yield ◽  
Short Duration ◽  
Nitrogen Uptake ◽  
Nitrogen Fertilizer ◽  
Dry Matter ◽  
Cropping Systems ◽  
Dry Season ◽  
Multiple Cropping ◽  
Rice Cropping Systems

SUMMARYThe productivity of seven multiple rice-cropping systems, utilizing a short-duration cultivar under irrigation, were assessed over 5 years. Systems of one, two and three crops a year were compared. Multiple cropping reduced grain yield, panicles m-2, total dry matter and nitrogen uptake per crop. However, the unfertilized three-crop-per-year system averaged 9·1 t grain, 17·1 t DM and 126 kg N ha-1 per annum, without showing a long term decline in productivity. Recovery and utilization of nitrogen fertilizer were generally low compared to other experiments, and were highest for the early dry season cropping period.

Grain yield formation and nitrogen uptake of amaranth

1995 ◽  
Vol 4 (3) ◽  
pp. 379-386 ◽  
Author(s):  
W. Aufhammer ◽  
H.-P. Kaul ◽  
P. Herz ◽  
E. Nalborczyk ◽  
A. Dalbiak ◽  
...  
Keyword(s):  
Grain Yield ◽  
Nitrogen Uptake ◽  
Yield Formation

Effects of Elevated Atmospheric CO2 and its Interaction with Temperature and Nitrogen on Yield of Barley (Hordeum vulgare L.): A Meta-analysis

2021 ◽  
Author(s):  
Mekides Woldegiorgis Gardi ◽  
Bettina I.G Haussmann ◽  
Waqas Ahmed Malik ◽  
Petra Högy
Keyword(s):  
Grain Yield ◽  
Nitrogen Fertilizer ◽  
Meta Analysis ◽  
N Fertilization ◽  
Additional Stress ◽  
Hordeum Vulgare L ◽  
Grain Number ◽  
Experimental Conditions ◽  
Elevated Atmospheric Co2 ◽  
The Mean

Abstract AimsThe general aim of this meta-analysis is to synthesize and summarise the mean response of barley yield variables to elevated CO2 (eCO2) and its interaction with temperature and N fertilization. Methods The present study quantitatively synthesized the response of barley to eCO2 and its interaction with temperature, and Nitrogen (N). A meta-analysis procedure was used to analyse five yield variables of barley extracted from 76 articles to determine the effect size and the magnitude in relation to eCO2 and its interaction with temperature and N. Results CO2 enrichment increased biomass (23.8%), grain number (24.8%), grain yield (27.4%), and thousand-grain weight (5.6%). However, responses to eCO2 were affected by genotype, additional stress, and experimental conditions. In comparison, genotype “Anakin” shows the highest response of biomass (47.1%), while “Genebank accessions” had a higher grain number (46.1%) and grain yield (57.1%) under eCO2. The maximal enhancement of barley yield was observed when plants grow under a combination of eCO2 and higher nitrogen fertilizer (>100 kg ha-1). Nevertheless, biomass (-12%), and grain yield (-17%) responses were lower when eCO2 is combined with high temperature (>25 °C). It was further noted the response of barley yield to eCO2 was higher in the growth chamber than in other CO2 exposure methods. Moreover, comparing pot-rooted versus field-rooted barley plants, a higher response of biomass and grain yield was observed for pot-rooted plants. ConclusionsOverall, results suggest that the maximal barley production under eCO2 will be obtained in combination with high nitrogen fertilizer and optimal temperature (21-25 °C).

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