Simulation of the effects of nitrogen supply on yield formation processes in winter wheat with the model TRITSIM

1991 ◽  
pp. 293-304
Author(s):  
W. Mirschel ◽  
H. Kretschmer ◽  
E. Matthäus ◽  
R. Koitzsch
Keyword(s):  
Winter Wheat ◽  
Nitrogen Supply ◽  
Formation Processes ◽  
Yield Formation

Simulation of the effects of nitrogen supply on yield formation processes in winter wheat with the model TRITSIM

1991 ◽  
Vol 27 (2-3) ◽  
pp. 293-304 ◽  
Author(s):  
W. Mirschel ◽  
H. Kretschmer ◽  
E. Matth�us ◽  
R. Koitzsch
Keyword(s):  
Winter Wheat ◽  
Nitrogen Supply ◽  
Formation Processes ◽  
Yield Formation

Effects of excessive nitrogen supply on productivity of winter wheat

2013 ◽  
Vol 36 (10) ◽  
pp. 1075-1081
Author(s):  
Feng-Hua ZHAO ◽  
Jun-Hua MA ◽  
Zhu OUYANG
Keyword(s):  
Winter Wheat ◽  
Nitrogen Supply

scholarly journals Physiological response of flag leaf and yield formation of winter wheat under different spring restrictive irrigation regimes in the Haihe Plain, China

2021 ◽  
Vol 20 (9) ◽  
pp. 2343-2359
Author(s):  
Xue-jing LIU ◽  
Bao-zhong YIN ◽  
Zhao-hui HU ◽  
Xiao-yuan BAO ◽  
Yan-dong WANG ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Physiological Response ◽  
Flag Leaf ◽  
Irrigation Regimes ◽  
Yield Formation

scholarly journals THE ROLE OF FLAG LEAVES AND AWNS IN THE FORMATION OF WINTER WHEAT PRODUCTIVITY (REVIEW)

2018 ◽  
pp. 32-34 ◽  
Author(s):  
S. N. Gromova ◽  
P. I. Kostylev
Keyword(s):  
Winter Wheat ◽  
Leaf Surface ◽  
Wheat Yield ◽  
Complex Trait ◽  
Genetic System ◽  
Flag Leaves ◽  
Grain Productivity ◽  
Agricultural Yield ◽  
Yield Formation

The article presents the results of the conducted analysis of research works about the effect of size of flag leaves and awns on winter wheat productivity. The genetic potential of the variety, which can be realized on the basis of its biologic characteristics largely influences on its productivity. Productivity is a complex trait that is controlled by a complex genetic system closely connected with many factors of environment. The size and duration of assimilation surface are the most important components of biologic and agricultural yield of wheat. Many researchers showed that the amount and duration of photosynthesis by leaf surface are the main factors limiting productivity in the definite conditions of growing, and the size of leaf surface correlates with grain productivity. Photosynthetic parts of winter wheat include not only leaves, but also stems, heads, awns, etc. The conducted analysis of the literature showed that there is no consensus on the effect of flag leaves on wheat yield formation. Therefore it’s necessary to fulfill the study and evaluation of the part of flag leaves and awns in the formation of winter soft wheat productivity in the Rostov region.

scholarly journals INFLUENCE OF NITROGEN SUPPLY ON PHOTOSYNTHESIS, GRAIN PRODUCTIVITY AND PROTEIN CONTENT OF WINTER WHEAT

2018 ◽  
Vol 50 (2) ◽  
pp. 105-114 ◽  
Author(s):  
I.M. Shegeda ◽  
◽  
V.M. Pochinok ◽  
D.A. Kiriziy ◽  
T.P. Mamenko ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Protein Content ◽  
Nitrogen Supply ◽  
Grain Productivity

Optimizing nitrogen supply increases rice yield and nitrogen use efficiency by regulating yield formation factors

2013 ◽  
Vol 150 ◽  
pp. 99-107 ◽  
Author(s):  
Biao Sui ◽  
Xumeng Feng ◽  
Guangli Tian ◽  
Xiangyu Hu ◽  
Qirong Shen ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Rice Yield ◽  
Nitrogen Supply ◽  
Nitrogen Use ◽  
Use Efficiency ◽  
Yield Formation

Winter wheat growth dynamics and their relationship with the field productivity using Sentinel-1 SAR polarimetry

2020 ◽  
Author(s):  
Nikolaos-Christos Vavlas ◽  
Toby Waine ◽  
Jeroen Meersmans ◽  
Goetz Richter
Keyword(s):  
Winter Wheat ◽  
Stem Elongation ◽  
Temporal Frequency ◽  
Growth Dynamics ◽  
Growth And Yield ◽  
Field Development ◽  
Surface Moisture ◽  
Sigmoid Curve ◽  
Final Yield ◽  
Yield Formation

<p>Synthetic Aperture Radar (SAR) is sensitive to the surface structure as well as dielectric properties, so can be used to quantify the canopy characteristics and surface moisture. High temporal frequency SAR backscatter data are useful in terms of quantifying crop phenological development, growth and yield formation. The aim of this research is to identify the growth dynamics of winter wheat from SAR at field scale, validated using farm sites with different productivity between two years (2018-2019). We identify and explore the parameters which characterize crop performance from SAR temporal curves and use these to improve and automate the monitoring of wheat fields. Our novel methodology includes the extraction of crop indicators using the VH/VV ratio temporal curve from Sentinel-1. Sigmoid curve fitting is used to simulate the VH/VV response and the extracted parameters are related to the field development. The results show that specific indicators, such as the duration of the high vegetation (stem elongation to dough development) as well as the timing of the booting stage of wheat significantly correlate with the final yield. Other indicators can provide information about the canopy characteristics of wheat (e.g. above ground biomass and plant water content). The combination of selected indicators can provide a more robust analysis of the fields. These results demonstrate the potential of SAR to remotely quantify yield without using any management data from the farm.</p>

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