scholarly journals Seasonal change of photosynthetically active radiation intercepted by a spring wheat canopy and its relation to dry matter production.

1990 ◽  
Vol 59 (4) ◽  
pp. 778-784 ◽  
Author(s):  
Tadashi TAKAHASHI ◽  
Kimio NAKASEKO
Keyword(s):  
Seasonal Change ◽  
Spring Wheat ◽  
Photosynthetically Active Radiation ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Active Radiation ◽  
Matter Production

Simulation of leaf area and dry matter production of tobacco leaves based on product of thermal effectiveness and photosynthetically active radiation

2013 ◽  
Vol 33 (22) ◽  
pp. 7108-7115
Author(s):  
张明达 ZHANG Mingda ◽  
李蒙 LI Meng ◽  
胡雪琼 HU Xueqiong ◽  
李晓燕 LI Xiaoyan ◽  
朱勇 ZHU Yong
Keyword(s):  
Leaf Area ◽  
Photosynthetically Active Radiation ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Tobacco Leaves ◽  
Active Radiation ◽  
Matter Production

Recovery of Spring Wheat (Triticum aestivum) Injured by Trifluralin

Weed Science ◽  
1989 ◽  
Vol 37 (6) ◽  
pp. 784-789 ◽  
Author(s):  
Ian N. Morrison ◽  
Ken M. Nawolsky ◽  
George M. Marshall ◽  
Allan E. Smith
Keyword(s):  
Seed Yield ◽  
Spring Wheat ◽  
Dry Matter ◽  
Field Experiments ◽  
Dry Weight ◽  
Dry Matter Production ◽  
Growth Stages ◽  
Matter Production ◽  
Crop Density ◽  
Net Assimilation

The relationship between trifluralin dosages detected in the soil at seeding, initial crop injury, and subsequent recovery of spring wheat during the growing season was investigated in field experiments in 1986 and 1987. As the amount of trifluralin in the soil increased, both crop density and dry matter production decreased such that at 1 kg/ha the two were reduced by 37 and 50%, respectively, early in the season. As the season progressed, crop growth rates (CGRs) of wheat in trifluralin-treated plots exceeded those of wheat in the untreated plots. Maximum CGRs occurred between Zadok's growth stages 30 and 45 where trifluralin levels in the soil were 0.3 to 0.5 kg ai/ha at seeding. Recovery from trifluralin injury was characterized by enhanced net assimilation rates of surviving plants, increased tillering and greater dry matter production per plant. Wheat seed yield was only weakly correlated with trifluralin levels in the soil at seeding. From a linear regression model it was determined that a 35% reduction in plant dry weight from the trifluralin injury at the beginning of tillering would result in no more than a 10% reduction in seed yield at final harvest.

Dry matter production of green pea influenced by herbicides

2005 ◽  
Vol 33 (1) ◽  
pp. 377-380
Author(s):  
Erzsébet Nádasy ◽  
Gábor Wágner
Keyword(s):  
Dry Matter ◽  
Dry Matter Production ◽  
Matter Production ◽  
Green Pea
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