Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 153 for “"Water-use efficiency"”.
-
Water use efficiency of grazed pastures under contrasting diversity
… in production is potentially restricted by freshwater supply for irrigation. Consequently, relying on irrigation to enhance agricultural production is only a partial solution and increasing water use efficiency (WUE) is an important priority. Increasing pastoral diversity has been shown to …
-
Physiological Bases and a Novel Genetic Determinant of Water-Use Efficiency (WUE)
<p>Water-use efficiency (WUE), the ratio of biomass to water loss, is a heritable but complex trait, the genetic basis of which is largely unknown. We utilized diverse accessions of the halophyte <em>Eutrema salsugineum </em>to ultimately identify a novel genetic determinant of WUE. <em>E. …
-
Stomatal acclimation to dynamic light: implications for photosynthesis and water use efficiency
… consequences for photosynthetic CO2fixation and water loss from leaf to canopy levels, influencing carbon and hydrological cycles at global scales. Plant acclimation to growth light environment has been studied extensively; however, the majority of these studies have focused on constant light …
-
Evaluation of wheat(triticum aestivum l.)gentypes for nitrogen and water use efficiency
… however severely limited by cost of irrigation water and nitrogen fertilisers. A study was carried out at the National Irrigation Research Station (Nanga) in 2011 dry season to evaluate wheat genotypes for nitrogen and water use efficiency and identify wheat morphological traits that influence …
-
Evaluation of wheat(triticum aestivum l.)gentypes for nitrogen and water use efficiency
… however severely limited by cost of irrigation water and nitrogen fertilisers. A study was carried out at the National Irrigation Research Station (Nanga) in 2011 dry season to evaluate wheat genotypes for nitrogen and water use efficiency and identify wheat morphological traits that influence …
-
Identification of Physiological and Morphological Traits Governing High Water Use Efficiency in Alfalfa
… its high productivity depends on irrigation water in many areas and consumes the greatest amount of water among all the major crops. With a growing demand for water resources due to an increase in human population and industrial water use, plus frequent drought due to climate change, …
-
Soil Water Depletion and Water Use Efficiency of Wheat and Pea in Saskatchewan
Understanding the distribution of soil water and roots in soil profiles and their relationship to root water uptake (RWU) patterns is important for developing “water smart” rotations. In the semi-arid prairies, the introduction of pea into a rotation with cereals can help mitigate the influence of …
-
Growth, water use efficiency and stable carbon isotopes in commercial clones of Eucalyptus
… in a great reduction in the country's run-off water. If Eucalyptus continues to be the source of timber in South Africa, the selection of more water use efficient species for planting in existing and new areas has to be implemented. An understanding of the physiological factors ruling growth …
-
Evaluation of water use efficiency in upland Rice (Oryza sativa L) Under deficit irrigation)
… light of increasing pressure on limited fresh water resources, the growing world population and increasing greenhouse gas emission, maximizing crop water use becomes an important topic. Considerable research is being done on deficit irrigation. However, there is limited published work …
-
Evaluation of water use efficiency in upland Rice (Oryza sativa L) Under deficit irrigation)
… light of increasing pressure on limited fresh water resources, the growing world population and increasing greenhouse gas emission, maximizing crop water use becomes an important topic. Considerable research is being done on deficit irrigation. However, there is limited published work …
-
Yield and water use efficiency of different plant populations of dryland corn and sorghum
Two field experiments were conducted at the Tidewater Agricultural Research and Extension Center, in Suffolk, Virginia, during summer 1994, on a Uchee loamy sand (fine, loamy, siliceous, thermic Arenic Hapludult) with relatively low water holding capacity. The objective was to determine the effect …
-
Organic manure effects on selected soil properties, water use efficiency and grain yield of sunflower
… of organic manures as alternatives to reduce the use of mineral fertilizers is considered a good agricultural practice for smallholder farmers. However, the effect of organic manure on soil properties and crop yield depends upon its application rate and chemical composition. Climatic seasonal …
-
Water-use efficiency and productivity in native Canadian populations of Populus trichocarpa and Populus balsamifera
… production, carbon sequestration, and other uses linked to climate change are looking to tree physiologists to identify species and genotypes best-suited to their purposes. The ideal poplar genotype for use in Canadian programs would be drought-resistant, cold-climate adapted, and …
-
High-throughput phenotyping and physiological genetics of stomatal patterning and water use efficiency in maize
… of maize has shown to be associated with greater water inputs, which makes maize production more sensitive and vulnerable to drought events. In addition, the greater atmospheric vapor pressure deficit in the future climate will pose greater forces to pull water vapor out of plants. Thus, there is …
-
Evaluating impacts of hydroclimatic extremes on water use efficiency and carbon use efficiency of northern ecosystems
… high-latitude ecosystems. As essential global water and carbon balance regulators, these sensitive ecosystems respond to increased warming and altered hydrology with modulated resource use efficiencies. This study aimed to investigate the impacts of various hydroclimatic drivers on ecosystem …
-
A multifaceted approach to identifying targets for the improvement of water-use efficiency in Zea mays
… development of more efficient crops. With fresh water resources declining and precipitation patterns becoming more sporadic, severe drought scenarios are becoming a normal occurrence during production seasons. Current methods for quantifying water-use efficiency (WUE) in C4 crops are not able to …
-
Effect of irrigation technology and plant density on cotton growth, yield, yield components, and water use efficiency
Limited water resources and insufficiently developed infrastructure provide challenges to sustainable production of cotton (Gossypium hirsutum L.) in Western Kansas. This study aimed to (i) assess the effect of irrigation technology and plant density on cotton growth, yield, and yield components, …
-
Water use efficiency and influence of management policies, analysis for the small-scale irrigation sector in South Africa
With the growing water scarcity, the need for more efficient water use has worldwide increased in importance. In addition, cost-recovery is now widely acknowledged as a cornerstone of sustainable water management. This research aims to contribute to improved water management in the small-scale …
-
The physiology, mapping, and prediction of stable carbon isotopes: a proxy trait for water-use efficiency in maize
Drought is the leading cause of yield loss in maize in the United States, and climate models predict that drought events will become more frequent and severe. In recent years, focus has been placed on developing crops to be better adapted to weather extremes by selecting for heat tolerance and …
Page 1 of 8