Leaf carbon, nitrogen and phosphorus stoichiometry at different growth stages in dominant tree species of a monsoon broad-leaved evergreen forest in Pu’er, Yunnan Province, China

2015 ◽  
Vol 39 (1) ◽  
pp. 52-62 ◽  
Author(s):  
LIU Wan-De ◽  
◽  
SU Jian-Rong ◽  
LI Shuai-Feng ◽  
LANG Xue-Dong ◽  
...  
Keyword(s):  
Tree Species ◽  
Yunnan Province ◽  
Evergreen Forest ◽  
Growth Stages ◽  
Nitrogen And Phosphorus ◽  
Different Growth Stages

scholarly journals Effects of Controlled Irrigation and Drainage on Nitrogen and Phosphorus Concentrations in Paddy Water

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Shi-kai Gao ◽  
Shuang-en Yu ◽  
Guang-cheng Shao ◽  
Dong-li She ◽  
Mei Wang ◽  
...  
Keyword(s):  
Water Stress ◽  
Growth Stage ◽  
Stage Iv ◽  
Growing Season ◽  
Growth Stages ◽  
Nitrogen And Phosphorus ◽  
Paddy Water ◽  
Controlled Irrigation ◽  
Different Growth Stages ◽  
Percolation Water

Controlled irrigation and drainage (CID) has received attention for improving water quality. Under CID condition, water stress is frequently experienced in two contexts: first drought and then flooding (FDTF) and first flooding and then drought (FFTD). This study aimed to investigate the effects of FDTF and FFTD on nitrogen (N) and phosphorus (P) dynamics in paddy water at different growth stages. The effects of water stress on the migration and transformation of N and P were also investigated. Results showed that CID can decrease N and P concentrations in surface water.NH4+-Nwas the major form of N in surface drainage and percolation water. Mean total phosphorus (TP),NH4+-N, andNO3--Nconcentrations were significantly higher than in FFTD during the growth stage. MeanNH4+-N,NO3--N, and TP concentrations were significantly higher in percolation water under flooding stress than those under drought stress at growth stage, except for mean TP concentrations at milky stage (stage IV). Meanwhile, flooding can sharply increase theNH4+-N,NO3--N, and TP concentrations in percolation water after drought. Thus, without CID, the considerably highNH4+-N,NO3--N, and TP concentrations via runoff and leaching can be responsible for the eutrophication of water bodies in the vicinity of paddy fields during the rice growing season when water stress transforms from drought into flooding.

Ruminal fermentation kinetics of nine halophytic tree species at different growth stages

2018 ◽  
Vol 93 (5) ◽  
pp. 1843-1852
Author(s):  
Mostafa Yousef Elahi ◽  
Ameer Khusro ◽  
Mona M. Y. Elghnadour ◽  
Abdelfattah Z. M. Salem ◽  
Secundino López
Keyword(s):  
Tree Species ◽  
Growth Stages ◽  
Ruminal Fermentation ◽  
Fermentation Kinetics ◽  
Kinetics Of ◽  
Different Growth Stages

Cytokinins from terminal buds of Euphoria longana during different growth stages

1997 ◽  
Vol 99 (1) ◽  
pp. 185-189
Author(s):  
Wen-Shaw Chen ◽  
Kuang-Liang Huang ◽  
Hsiao-Ching Yu
Keyword(s):  
Growth Stages ◽  
Terminal Buds ◽  
Different Growth Stages

Effects of Meteorological Factors at Different Growth Stages on Yield Traits of Maize (Zea maysL.) in Heilonggang Basin

2013 ◽  
Vol 39 (5) ◽  
pp. 919 ◽  
Author(s):  
Bo MING ◽  
Jin-Cheng ZHU ◽  
Hong-Bin TAO ◽  
Li-Na XU ◽  
Bu-Qing GUO ◽  
...  
Keyword(s):  
Meteorological Factors ◽  
Growth Stages ◽  
Yield Traits ◽  
Different Growth Stages
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