Application of the photosynthetic light-use efficiency model in a northern Great Plains grassland

2015 ◽  
Vol 168 ◽  
pp. 239-251 ◽  
Author(s):  
Lawrence B. Flanagan ◽  
Eric J. Sharp ◽  
John A. Gamon
Keyword(s):  
Great Plains ◽  
Northern Great Plains ◽  
Light Use Efficiency ◽  
Use Efficiency ◽  
Light Use Efficiency Model

scholarly journals Yield and Nitrogen Use Efficiency of Irrigated Corn in the Northern Great Plains

1907 ◽  
Vol 87 (5) ◽  
pp. 842-846 ◽  
Author(s):  
Brian J. Wienhold ◽  
Todd P. Trooien ◽  
George A. Reichman
Keyword(s):  
Great Plains ◽  
Nitrogen Use Efficiency ◽  
Northern Great Plains ◽  
Nitrogen Use ◽  
Use Efficiency

scholarly journals Estimating crop yield using a satellite-based light use efficiency model

2016 ◽  
Vol 60 ◽  
pp. 702-709 ◽  
Author(s):  
Wenping Yuan ◽  
Yang Chen ◽  
Jiangzhou Xia ◽  
Wenjie Dong ◽  
Vincenzo Magliulo ◽  
...  
Keyword(s):  
Crop Yield ◽  
Light Use Efficiency ◽  
Use Efficiency ◽  
Light Use Efficiency Model

scholarly journals Identification of a general light use efficiency model for gross primary production

2011 ◽  
Vol 8 (4) ◽  
pp. 999-1021 ◽  
Author(s):  
J. E. Horn ◽  
K. Schulz
Keyword(s):  
Primary Production ◽  
Large Scale ◽  
Gross Primary Production ◽  
Daily Basis ◽  
Climatic Conditions ◽  
Environmental Drivers ◽  
Light Use Efficiency ◽  
Meteorological Forcing ◽  
Use Efficiency ◽  
Light Use Efficiency Model

Abstract. Non-stationary and non-linear dynamic time series analysis tools are applied to multi-annual eddy covariance and micrometeorological data from 44 FLUXNET sites to derive a light use efficiency model for gross primary production on a daily basis. The extracted typical behaviour of the canopies in response to meteorological forcing leads to a model formulation allowing for a variable influence of the environmental drivers temperature and moisture availability modulating the light use efficiency. Thereby, the model is applicable to a broad range of vegetation types and climatic conditions. The proposed model explains large proportions of the variation of the gross carbon uptake at the study sites while the optimized set of six parameters is well defined. With the parameters showing explainable and meaningful relations to site-specific environmental conditions, the model has the potential to serve as basis for general regionalization strategies for large scale carbon flux predictions.

scholarly journals Effect of Land Rolling on Weed Emergence in Field Pea, Barley, and Fallow

2009 ◽  
Vol 23 (1) ◽  
pp. 23-27 ◽  
Author(s):  
Andrew W. Lenssen
Keyword(s):  
Water Use ◽  
Great Plains ◽  
Field Trials ◽  
Field Pea ◽  
Northern Great Plains ◽  
Forage Crops ◽  
Planting Dates ◽  
Green Foxtail ◽  
Use Efficiency ◽  
Summer Fallow

In the northern Great Plains, fields are land rolled after the planting of annual pulse and forage crops to push rocks back into the soil to prevent damage to harvest equipment. Field trials were conducted in 2004 and 2005 to determine if land rolling influenced weed density or biomass associated with field pea, forage barley, and summer fallow. The experiment included two planting dates, conventional and delayed, for both barley and pea. Separate fallow plots were included with each planting date. Preplant tillage was conducted with a field cultivator for all treatments. Across years, crops, and planting dates, land rolling approximately doubled densities of tumble mustard, Russian thistle, kochia, and redroot pigweed shortly after crop emergence and at harvest compared with nonrolled. Land rolling increased density of early-emerging green foxtail but density at harvest was not affected. Wild oat densities were not influenced by rolling. Weed biomass at harvest was greater after land rolling than nonrolled. Land rolling after planting decreased subsequent pea yield by 330 kg/ha, but did not influence water use or water use efficiency. Land rolling is advantageous by hastening depletion of soil broadleaf weed seed banks in forage barley, but may increase problematic broadleaf weeds in pea.

Sign in / Sign up

Export Citation Format

Share Document