The effect of low nitrogen supply on yield and water-use efficiency of sweet potato (Ipomoea batatas L.)

2001 ◽  
pp. 402-403 ◽  
Author(s):  
M. Kelm ◽  
H. Brück ◽  
M. Hermann ◽  
B. Sattelmacher
Keyword(s):  
Water Use Efficiency ◽  
Sweet Potato ◽  
Water Use ◽  
Ipomoea Batatas ◽  
Nitrogen Supply ◽  
Use Efficiency ◽  
Low Nitrogen

scholarly journals Morpho-physiological and Yield Responses of Sweet Potato (Ipomoea batatas (L.) Lam.) Genotypes to Frequency of Irrigation under Greenhouse Condition

2019 ◽  
pp. 1-17
Author(s):  
Amsalu Gobena Roro ◽  
Mihret Tesfaye
Keyword(s):  
Water Use Efficiency ◽  
Sweet Potato ◽  
Water Use ◽  
Morphological Traits ◽  
Ipomoea Batatas ◽  
Irrigation Frequency ◽  
Branch Number ◽  
Stomata Density ◽  
Irrigation Interval ◽  
Use Efficiency

Introduction: The sweet potato (Ipomoea batatas Lam.), is one of the root and tuber crops grown from low land to high land region of Ethiopia. However, its productivity depends on adaptability and tolerance to different environmental stresses and the capacity of the crop to enhance water use efficiency under moisture stress conditions. The objective of this study was to evaluate impact of irrigation interval on morpho-physiological characteristics of sweet potato varieties. Methodology: The trial was a 3 x 2 factorial arrangement in CRD design consisting: three irrigation intervals (daily-control), four days and seven days interval) combined with two sweet potato genotypes (Hawassa-83 and Kulfo) with three replications. Results: The morpho-physiological indicators, morphological traits, water use efficiency (WUE), Relative leaf water content (RLWC), leaf gas exchange, stomata density, and tuber yield were evaluated. The result indicated that morphological traits were significantly (P≤0.05) responded to genotype and irrigation frequencies. As compared to daily irrigation, an extended watering interval to seven days irrigation interval significantly reduced leaf number, vine length, branch number and internode length by 55.42, 19.83 cm, 2.17 and 0.35 cm, respectively. Stomata density was strongly responded to genotypes than effect of irrigation frequency. Genotype Hawassa-83 had approximately 2.0 more stomata per mm2 than genotype Kulfo regardless to irrigation frequency. The interaction effect between genotype and irrigation frequency revealed significant influence on photosynthesis and transpiration rate. The rate of assimilate accumulation was significantly reduced (by 9.97

Why is physiological water-use efficiency lower under low nitrogen supply?

2001 ◽  
pp. 400-401 ◽  
Author(s):  
H. Brück ◽  
I. Lugert ◽  
W. Zhou ◽  
B. Sattelmacher
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Nitrogen Supply ◽  
Use Efficiency ◽  
Low Nitrogen

No‐tillage with reduced water and nitrogen supply improves water use efficiency of wheat in arid regions

2020 ◽  
Vol 112 (1) ◽  
pp. 578-591 ◽  
Author(s):  
Yao Guo ◽  
Wen Yin ◽  
Zhilong Fan ◽  
Falong Hu ◽  
Hong Fan ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Arid Regions ◽  
Nitrogen Supply ◽  
No Tillage ◽  
Use Efficiency ◽  
Reduced Water

Effects of nitrogen supply on tomato yield, water use efficiency and fruit quality: A global meta-analysis

2021 ◽  
Vol 290 ◽  
pp. 110553
Author(s):  
Minghui Cheng ◽  
Haidong Wang ◽  
Junliang Fan ◽  
Youzhen Xiang ◽  
Zijun Tang ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Fruit Quality ◽  
Meta Analysis ◽  
Nitrogen Supply ◽  
Tomato Yield ◽  
Use Efficiency

Nitrogen supply – A determinant in water use efficiency of winter wheat grown under free air CO2 enrichment

2018 ◽  
Vol 210 ◽  
pp. 70-77 ◽  
Author(s):  
Remy Manderscheid ◽  
Markus Dier ◽  
Martin Erbs ◽  
Jan Sickora ◽  
Hans-Joachim Weigel
Keyword(s):  
Winter Wheat ◽  
Water Use Efficiency ◽  
Water Use ◽  
Co2 Enrichment ◽  
Nitrogen Supply ◽  
Free Air Co2 Enrichment ◽  
Free Air ◽  
Use Efficiency
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