Environmental Controls on Water Use Efficiency in a Hilly Tea Plantation in Southeast China

2021 ◽  
Author(s):  
Jiaping Pang ◽  
Hengpeng Li ◽  
Jianwei Geng ◽  
Wangshou Zhang ◽  
Fuhe Yu
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Tea Plantation ◽  
Southeast China ◽  
Environmental Controls ◽  
Use Efficiency

Environmental controls on water use efficiency of a poplar plantation under different soil water conditions

2013 ◽  
Vol 33 (5) ◽  
pp. 1465-1474
Author(s):  
周洁 ZHOU Jie ◽  
张志强 ZHANG Zhiqiang ◽  
孙阁 SUN Ge ◽  
方显瑞 FANG Xianrui ◽  
查同刚 ZHA Tonggang ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Poplar Plantation ◽  
Environmental Controls ◽  
Water Conditions ◽  
Use Efficiency ◽  
Soil Water Conditions

Environmental controls on water use efficiency during severe drought in an Ozark Forest in Missouri, USA

2009 ◽  
Vol 16 (8) ◽  
pp. 2252-2271 ◽  
Author(s):  
BAI YANG ◽  
STEPHEN G. PALLARDY ◽  
TILDEN P. MEYERS ◽  
LIAN-HONG GU ◽  
PAUL J. HANSON ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Severe Drought ◽  
Environmental Controls ◽  
Use Efficiency

scholarly journals The Intra-Annual Intrinsic Water Use Efficiency Dynamics Based on an Improved Model

2021 ◽  
Author(s):  
Xiaojin Bing ◽  
Keyan Fang ◽  
Xiaoying Gong ◽  
Wenzhi Wang ◽  
Chenxi Xu ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Pinus Massoniana ◽  
C3 Plants ◽  
Mountain Area ◽  
Southeast China ◽  
Intrinsic Water Use Efficiency ◽  
Use Efficiency ◽  
Improved Model ◽  
The Impact

Abstract The carbon isotope fractionation value (Δ) has been widely used to infer the intrinsic water use efficiency (iWUE) of C3 plants. Currently, the most commonly used iWUE method (expressed as iWUE tra ) in tree rings assumes that the mesophyll conductance in plants is infinite. However, many observation-based studies have pointed out that such an assumption leads to overestimating the impact of carbon dioxide (CO 2 ) on intrinsic water use efficiency in plants. In this study, a constant g s /g m ratio (0.79) was introduced for calculating iWUE (expressedas iWUE mes ). We applied this iWUE mes model to our newly developed intra-annual (10 samples per ring) Δ 13 C chronology of Cryptomeria fortunei tree for 1965–2017 at Gu Mountain Area and our annual Δ 13 C chronology of Pinus massoniana tree for 1865–2014 at Niumulin Natural Reserve in southeast China. Using dendrochronology techniques, our analysis revealed that the current iWUE tra model overestimates the iWUE values by approximately 2 times and that the iWUE value of trees inferred from iWUE mes modelling decreased significantly in summer-autumn time, which may indicate that alternative factors play a role in limiting the degree of iWUE improvement under the drought-stressed forest in southeast China.

Increasing intrinsic water-use efficiency over the past 160 years does not stimulate tree growth in southeastern China

2018 ◽  
Vol 76 (2) ◽  
pp. 115-130 ◽  
Author(s):  
G Guo ◽  
K Fang ◽  
J Li ◽  
HW Linderholm ◽  
D Li ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Tree Growth ◽  
Southeastern China ◽  
The Past ◽  
Intrinsic Water Use Efficiency ◽  
Use Efficiency

A comparative appraisal of urea super granule application in raised bed and prilled urea application in conventional planting for transplanted boro rice (Oryza sativa)

2016 ◽  
Vol 6 (1) ◽  
pp. 822-832
Author(s):  
Halim Mahmud Bhuyan ◽  
Most. Razina Ferdousi ◽  
Mohammad Toufiq Iqbal ◽  
Ahmed Khairul Hasan
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
N Fertilizer ◽  
Deep Placement ◽  
Prilled Urea ◽  
Planting Methods ◽  
Weed Infestation ◽  
Use Efficiency ◽  
Raised Bed ◽  
Boro Rice

Utilization of urea super granule (USG) with raised bed cultivation system for transplanted boro (winter, irrigated) rice production is a major concern now days. A field experiment was conducted in the chuadanga district of Bangladesh to compare the two cultivation methods: deep placement of USG on raised bed with boro rice, and prilled urea (PU) broadcasting in conventional planting. Results showed that USG in raised bed planting increased grain yields of transplanted boro rice by up to 18.18% over PU in conventional planting. Deep placement of USG in raised bed planting increased the number of panicle m-2, number of grains panicle-1 and 1000-grains weight of boro rice than the PU in conventional planting. Better plant growth was observed by deep placement of USG in raised bed planting compared to PU in conventional planting. Sterility percentage and weed infestation were lower on USG in raised bed planting compared to the PU in conventional planting methods. Forty seven percent irrigation water and application time could be saved by USG in raised bed planting than PU in conventional planting. Deep placement of USG in bed saved N fertilizer consumption over conventional planting. Water use efficiency for grain and biomass production was higher with deep placement of USG in bed planting than the PU broadcasting in conventional planting methods. Similarly, agronomic efficiency of N fertilizer by USG in bed planting was significantly higher than the PU broadcasting in conventional planting. This study concluded that deep placement of USG in raised bed planting for transplanted boro rice is a new approach to achieve fertilizer and water use efficiency as well as higher yield and less water input compared to existing agronomic practices in Bangladesh.

Effects of Irrigation Amount on Grain Starch Content, Starch Synthase Activity, and Water Use Efficiency in Wheat

2009 ◽  
Vol 35 (2) ◽  
pp. 324-333 ◽  
Author(s):  
Peng-Fei CHU ◽  
Zhen-Wen YU ◽  
Xiao-Yan WANG ◽  
Tong-Hua WU ◽  
Xi-Zhi WANG
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Starch Content ◽  
Starch Synthase ◽  
Irrigation Amount ◽  
Grain Starch ◽  
Use Efficiency
Sign in / Sign up

Export Citation Format

Share Document