scholarly journals Deep Root Water Uptake Ability and Water Use Efficiency of Pearl Millet in Comparison to Other Millet Species

2005 ◽  
Vol 8 (4) ◽  
pp. 454-460 ◽  
Author(s):  
Walter Zegada-Lizarazu ◽  
Morio Iijima
Keyword(s):  
Water Use Efficiency ◽  
Pearl Millet ◽  
Water Use ◽  
Water Uptake ◽  
Root Water Uptake ◽  
Deep Root ◽  
Use Efficiency

scholarly journals Estimating the Root Water Uptake of Surface-Irrigated Apples Using Water Stable Isotopes and the Hydrus-1D Model

Water ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1624 ◽  
Author(s):  
Lijian Zheng ◽  
Juanjuan Ma ◽  
Xihuan Sun ◽  
Xianghong Guo ◽  
Qiyun Cheng ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Water Use Efficiency ◽  
Water Use ◽  
Water Uptake ◽  
Root Water Uptake ◽  
Surface Irrigation ◽  
Apple Trees ◽  
1D Model ◽  
Use Efficiency ◽  
Hydrus 1D

The future production of irrigated fruit orchards in the Loess Plateau of China is threatened by a shortage of freshwater. To improve water use efficiency under conditions where irrigation is limited, it is necessary to quantify the root water uptake (RWU) of apple trees. The RWU of apple trees was estimated under surface irrigation using water stable isotope technology and the Hydrus-1D model. Using the Romero-Saltos and IsoSource models, the stable isotopes of water in stems, different soil depths, and different precipitation were analyzed in a 5-year-old dwarfing apple orchard during two seasons 2016 and 2017. Hydrus-1D model was able to simulate the RWU of apple using the maximum coefficient of determination (0.9), providing a root mean square error of 0.019 cm3 cm−3 and a relative error of 2.25%. The results showed that the main depth of RWU ranged from 0–60 cm during the growth season, with the main contribution occurring in the 0–40 cm depth. These findings indicated that reducing the traditional surface irrigation depth will be important for improving the irrigation water use efficiency.

Effects of irrigation frequency under limited irrigation on root water uptake, yield and water use efficiency of winter wheat

2009 ◽  
Vol 58 (4) ◽  
pp. 393-405 ◽  
Author(s):  
Liwei Shao ◽  
Xiying Zhang ◽  
Suying Chen ◽  
Hongyong Sun ◽  
Zhenhua Wang
Keyword(s):  
Winter Wheat ◽  
Water Use Efficiency ◽  
Water Use ◽  
Water Uptake ◽  
Root Water Uptake ◽  
Irrigation Frequency ◽  
Use Efficiency

Dynamics of root water uptake and water use efficiency under alternate partial root-zone irrigation

2013 ◽  
Vol 52 (13-15) ◽  
pp. 2805-2810 ◽  
Author(s):  
C.X. Li ◽  
X.G. Zhou ◽  
J.S. Sun ◽  
H.Z. Wang ◽  
Y Gao
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Water Uptake ◽  
Root Zone ◽  
Root Water Uptake ◽  
Use Efficiency

scholarly journals Effect of year and fertilizer on water-use efficiency of pearl millet (Pennisetum glaucum) in Niger

1999 ◽  
Vol 132 (2) ◽  
pp. 139-148 ◽  
Author(s):  
M. V. K. SIVAKUMAR ◽  
S. A. SALAAM
Keyword(s):  
Water Use Efficiency ◽  
Pearl Millet ◽  
Water Use ◽  
Pennisetum Glaucum ◽  
Fertilizer Application ◽  
Growth And Yield ◽  
Soluble Phosphate ◽  
Average Rainfall ◽  
Use Efficiency ◽  
Yield Responses

A comprehensive study was conducted over a 4-year period (1984–87) to evaluate the water use, growth and yield responses of pearl millet (Pennisetum glaucum (L.) R. Br.) cv. CIVT grown with and without fertilizer (30 kg P2O5 and 45 kg N ha−1) at the ICRISAT Sahelian Centre, Sadoré, Niger. Our study showed significant year and fertilizer effects on the growth and yield of millet at the study site. Observed year effects were primarily due to the variations in the amount and distribution of rainfall in relation to the potential demand for water. During 1984, 1985 and 1987, total rainfall was below the long term average, while in 1986 it was above average. While the onset of rains (relative to the average date of onset) was early from 1984 to 1986, in 1987 the sowings were delayed by as much as 33 days. Of all the four years, the separation between the treatments in the cumulative evaporation is most evident for 1984, which was a drought year with below-average rainfall in all the months from June to September. Cumulative evaporation patterns in 1985 and 1986 were similar because of regular rains and high average rainfall per rainy day from June to October. In 1987, sowings were delayed until 15 July and only 6·9 mm of rainfall was received per rainy day in July. Hence cumulative evaporation was initially low and showed a significant increase only after two significant rain events in early August. There was a large response to fertilizer in all the years as small additions of fertilizer phosphate increased the soluble phosphate in the soil. Fertilizer application resulted in a small increase in water use (7–14%) in all years except 1987. Increased yield due to the application of fertilizer was accompanied by an increase in the water-use efficiency (WUE) in all the four years with the largest increase in 1985. The beneficial effect of fertilizers could be attributed to the rapid early growth of leaves which can contribute to reduction of soil evaporative losses and increased WUE. Over the four seasons, average increase in the WUE due to the addition of fertilizer was 84%.

scholarly journals Soil Phosphorus Availability and Pearl Millet Water‐Use Efficiency

Crop Science ◽  
1992 ◽  
Vol 32 (4) ◽  
pp. 1010-1015 ◽  
Author(s):  
William A. Payne ◽  
Malcolm C. Drew ◽  
Lloyd R. Hossner ◽  
Robert J. Lascano ◽  
Arthur B. Onken ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Pearl Millet ◽  
Water Use ◽  
Soil Phosphorus ◽  
Phosphorus Availability ◽  
Use Efficiency

Water uptake depth is coordinated with leaf water potential, water‐use efficiency and drought vulnerability in karst vegetation

2020 ◽  
Vol 229 (3) ◽  
pp. 1339-1353
Author(s):  
Yali Ding ◽  
Yunpeng Nie ◽  
Hongsong Chen ◽  
Kelin Wang ◽  
José I. Querejeta
Keyword(s):  
Water Use Efficiency ◽  
Water Potential ◽  
Water Use ◽  
Water Uptake ◽  
Leaf Water Potential ◽  
Leaf Water ◽  
Drought Vulnerability ◽  
Use Efficiency
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