scholarly journals Effects of Nitrogen Application and Planting Density on Morphological Traits, Dry Matter Production and Yield of Large Grain Type Rice Variety Bekoaoba and Strategies for Super High-Yielding Rice in the Tohoku Region of Japan

2011 ◽  
Vol 14 (1) ◽  
pp. 56-63 ◽  
Author(s):  
Akira Fukushima ◽  
Hiroyuki Shiratsuchi ◽  
Hiromichi Yamaguchi ◽  
Akari Fukuda
Keyword(s):  
Morphological Traits ◽  
Dry Matter ◽  
Rice Variety ◽  
Planting Density ◽  
Dry Matter Production ◽  
Nitrogen Application ◽  
Matter Production

Prediction of the influence of water, sowing date and planting density on dry matter production of wheat

1980 ◽  
Vol 31 (1) ◽  
pp. 1 ◽  
Author(s):  
RJ Hanks ◽  
DW Puckridge
Keyword(s):  
Dry Matter ◽  
South Australia ◽  
Sowing Date ◽  
Planting Density ◽  
Dry Matter Production ◽  
Balance Model ◽  
Area Index ◽  
Matter Production ◽  
Influence Of Water ◽  
Good Agreement

A water balance model was used to calculate dry matter yields for wheat. The prediction used initial soil water, irrigation, rainfall and pan evaporation as inputs. Leaf area index (LAI) was estimated by an empirical equation and changes in LAI were determined by the ratio of predicted to potential transpiration and relative density. Time of sowing influenced time of maximum LAI. Dry matter production was calculated from equations relating LAI and photosynthesis. The model was tested with data from wheat crops in South Australia which had been grown with large differences in water supply, planting density and sowing date between seasons. There was good agreement between predicted and measured production.

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