Regulated Deficit Irrigation And Partial Rootzone Drying
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Regulated Deficit Irrigation And Partial Rootzone Drying
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Author : Paul E. Kriedemann
language : en
Publisher:
Release Date : 2003*
Regulated Deficit Irrigation And Partial Rootzone Drying written by Paul E. Kriedemann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003* with Horticultural crops categories.
Partial Root Zone Drying An Alternative Irrigation Management To Improve The Water Use Efficiency Of Potato Crops
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Author : Adolfo Posadas
language : en
Publisher: International Potato Center
Release Date : 2008
Partial Root Zone Drying An Alternative Irrigation Management To Improve The Water Use Efficiency Of Potato Crops written by Adolfo Posadas and has been published by International Potato Center this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Deficit Irrigation Of Pome And Small Fruits
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Author : LAVDIM. LEPAJA
language : en
Publisher:
Release Date : 2019
Deficit Irrigation Of Pome And Small Fruits written by LAVDIM. LEPAJA and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
Agricultural Water Management
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2007-03-20
Agricultural Water Management written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-03-20 with Science categories.
This report contains a collection of papers from a workshopâ€"Strengthening Science-Based Decision-Making for Sustainable Management of Scarce Water Resources for Agricultural Production, held in Tunisia. Participants, including scientists, decision makers, representatives of non-profit organizations, and a farmer, came from the United States and several countries in North Africa and the Middle East. The papers examined constraints to agricultural production as it relates to water scarcity; focusing on 1) the state of the science regarding water management for agricultural purposes in the Middle East and North Africa 2) how science can be applied to better manage existing water supplies to optimize the domestic production of food and fiber. The cross-cutting themes of the workshop were the elements or principles of science-based decision making, the role of the scientific community in ensuring that science is an integral part of the decision making process, and ways to improve communications between scientists and decision makers.
Deficit Irrigation Practices
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Author : Food and Agriculture Organization of the United Nations
language : en
Publisher: Food & Agriculture Org.
Release Date : 2002
Deficit Irrigation Practices written by Food and Agriculture Organization of the United Nations and has been published by Food & Agriculture Org. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Technology & Engineering categories.
In the context of improving water productivity, there is a growing interest in deficit irrigation, an irrigation practice whereby water supply is reduced below maximum levels and mild stress is allowed with minimal effects on yield. Under conditions of scarce water supply and drought, deficit irrigation can lead to greater economic gains than maximizing yields per unit of water for a given crop; farmers are more inclined to use water more efficiently, and more water-efficient cash crop selection helps optimize returns. However, this approach requires precise knowledge of crop response to water as drought tolerance varies considerably by species, cultivar and stage of growth. The studies present the latest research concepts and involve various practices for deficit irrigation. Both annual and perennial crops were exposed to different levels of water stress, either during a particular growth phase, throughout the whole growing season or in a combination of growth stages. The overall finding, based on the synthesis of the different contributions, is that deficit or regulated-deficit irrigation can be beneficial where appropriately applied. Substantial savings of water can be achieved with little impact on the quality and quantity of the harvested yield. However, to be successful, an intimate knowledge of crop behavior is required, as crop response to water stress varies considerably.
Physiological And Biochemical Responses Of Three Grapevine Genotypes To Deficit Irrigation
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Author :
language : en
Publisher:
Release Date : 2007
Physiological And Biochemical Responses Of Three Grapevine Genotypes To Deficit Irrigation written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
This project investigated the physiological and biochemical responses of three grapevine genotypes to a deficit irrigation strategy termed partial rootzone drying (PRD). The principle objectives of the project were to (1) establish if the response to PRD is a unique vine physiological response; (2) to investigate the effect of PRD on berry maturation and composition; (3) effect of PRD on vine water-use efficiency; (4) investigate the hormonal signal involved in the PRD mechanism. In addition, the project investigated the adaptation of these three grapevine genotypes to Kansas climatic conditions. The irrigation project was conducted in both a greenhouse at Kansas State University, Manhattan, KS, and field conditions in an experimental vineyard at the John C. Pair Horticultural Research Center, Haysville, Kansas. The greenhouse study was replicated four times (6 months each run) and the field study ran from the 2005/2006 season through the 2006/2007 season. Application of PRD to vines resulted in a unique physiological response distinct from other established deficit irrigation procedures such as regulated deficit irrigation (RDI); however, the overall physiological responses of the vines were defined by the environmental conditions of the vineyard where the experiment occurred. Reduced water availability, low to medium vigor vines, restricted root development, and high evaporative demand were all factors in the vines response to PRD. Under these conditions, PRD did maintain the yield at deficit irrigation rates compared to fully irrigated vines, and was responsible for physiological changes in the vine that could have long-term implications for yield stability. The application of PRD resulted in an improvement in plant water status and maintenance of leaf function as measured by photosynthesis, stomatal conductance and leaf water potential throughout the season.
Effect Of Irrigation Systems Partial Root Zone Drying Irrigation And Regulated Deficit On Plant Parasitic Nematode Populations In Grapevine
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Author : Hae Soo Shin
language : en
Publisher:
Release Date : 2005
Effect Of Irrigation Systems Partial Root Zone Drying Irrigation And Regulated Deficit On Plant Parasitic Nematode Populations In Grapevine written by Hae Soo Shin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Grapes categories.
[Truncated abstract] Nematodes are known to significantly affect productivity of grapevines worldwide. Although major surveys have been carried out on nematodes infesting roots of grapevines elsewhere, only a preliminary survey has been carried out in Western Australia (W.A.). This study on the effect of irrigation systems on pathogenicity of nematodes on vines commenced with a survey of nematodes in two major grapegrowing regions of W.A. In this survey, soil samples were taken from 5 vineyards from Margaret River and 7 vineyards from Swan Valley regions of the state. Root-knot nematode (Meloidogyne spp.) was found to be the dominant genus in both major grape growing regions. Meloidogyne spp. occurred 76% and 75% of total soil sample in Margaret River and Swan Valley. The highest density of Meloidogyne spp. was 7 nematodes/g soil in Margaret River and 3.17 nematodes/g soil in Swan Valley. In both regions, other plant parasitic nematodes were recorded that included the root lesion (Pratylenchus spp.), dagger (Xiphinema spp.) and stubby (Trichodorus spp.) nematodes. Paratylenchus spp. were found in a few soil samples from Margaret River region, and Helicotylenchus spp. were found only in Swan Valley region, but was widespread. Some vineyards have established only resistant cultivars (Schartzman, Ramsey and 34 EM) resistant to nematodes. In these vineyards total nematode population was lower than most of other vineyards. However, in comparison of nematode numbers between cultivars, there were lower number of nematodes in some susceptible cultivars than in the resistant cultivars. Most common nematode taxa were Meloidogyne, Pratylenchus and Xiphinema in both regions. Root-knot and root lesion nematodes were the most widespread and economically important genera. These two genera are known to have different life cycle and feeding habits.
The Root Systems In Sustainable Agricultural Intensification
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Author : Zed Rengel
language : en
Publisher: John Wiley & Sons
Release Date : 2021-04-19
The Root Systems In Sustainable Agricultural Intensification written by Zed Rengel and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-04-19 with Science categories.
Explore an in-depth and insightful collection of resources discussing various aspects of root structure and function in intensive agricultural systems The Root Systems in Sustainable Agricultural Intensification delivers a comprehensive treatment of state-of-the-art concepts in the theoretical and practical aspects of agricultural management to enhance root system architecture and function. The book emphasizes the agricultural measures that enhance root capacity to develop and function under a range of water and nutrient regimes to maximize food, feed, and fibre production, as well as minimize undesirable water and nutrient losses to the environment. This reference includes resources that discuss a variety of soil, plant, agronomy, farming system, breeding, molecular and modelling aspects to the subject. It also discusses strategies and mechanisms that underpin increased water- and nutrient-use efficiency and combines consideration of natural and agricultural systems to show the continuity of traits and mechanisms. Finally, the book explores issues related to the global economy as well as widespread social issues that arise from, or are underpinned by, agricultural intensification. Readers will also benefit from the inclusion of: A thorough introduction to sustainable intensification, including its meaning, the need for the technology, components, and the role of root systems Exploration of the dynamics of root systems in crop and pasture genotypes over the last 100 years Discussion of the interplay between root structure and function with soil microbiome in enhancing efficiency of nitrogen and phosphorus acquisition Evaluation of water uptake in drying soil, including balancing supply and demand Perfect for agronomists, horticulturalists, plant and soil scientists, breeders, and soil microbiologists, The Root Systems in Sustainable Agricultural Intensification will also earn a place in the libraries of advanced undergraduate and postgraduate students in this field who seek a one-stop reference in the area of root structure and function.
The Grape Grower S Handbook
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Author : Ted Goldammer
language : en
Publisher:
Release Date : 2018
The Grape Grower S Handbook written by Ted Goldammer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Grape industry categories.
"Updated and revised to keep pace with developments, the third edition of Grape Grower's Handbook: a Guide to Viticulture for Wine Production is meant to be a stand-alone publication that describes all aspects of wine grape production. The book is written in a nontechnical format designed to be practical and well-suited for vineyard applications."--Back cover.
Handbook Of Irrigation System Selection For Semi Arid Regions
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Author : Mohammad Albaji
language : en
Publisher: CRC Press
Release Date : 2020-07-22
Handbook Of Irrigation System Selection For Semi Arid Regions written by Mohammad Albaji and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-07-22 with Technology & Engineering categories.
The Handbook of Irrigation System Selection for Semi-Arid Regions compares the various types of available irrigation systems for different regions and conditions, and explains how to analyze field data to determine the suitability of the land for surface, sprinkle, or drip irrigation systems. The book focuses on strategies for irrigation development and management and examines deficit irrigation and partial root-zone drying systems. Also, solute leaching modeling under different irrigation systems, soil moisture conditions, and organic fertilizer application in arid areas are discussed. Further, it examines multi-criteria decision making for irrigation management and the appraisal of agricultural lands for irrigation in hot, sub-humid regions. Features: Presents comparative analysis to aid in the selection of the most appropriate types of irrigation systems according to land characteristics. Includes numerous practical case studies. Offers parametric evaluation systems for irrigation purposes. Considers data from semi-arid zones, each with different sub-climates. Focusing on semi-arid land, the book highlights parametric evaluation systems for irrigation purposes, along with the use of analytical hierarchy processes integrated with GIS to determine which systems are best suited. This comprehensive and well-illustrated handbook will be of great interest to students, professionals, and researchers involved with all aspects of irrigation in semi-arid regions.