Deficit Irrigation
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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.
Deficit Irrigation
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Author : Samiha Ouda
language : en
Publisher: Springer Nature
Release Date : 2020-01-22
Deficit Irrigation written by Samiha Ouda and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-01-22 with Technology & Engineering categories.
This book focuses on proving that deficit irrigation could play an important role in increasing food production in times of water scarcity. Although the application of deficit irrigation can involve loss in crop productivity, it still secures water to be use in cultivating more lands and producing more food. The following questions are discussed and the authors offer solutions to these problems: Will the production, on a national level, resulting from these new added areas compensate yield losses attained by application of deficit irrigation? Is it possible to use deficit irrigation practice to reduce the applied irrigation water to certain crops that have a surplus in their production, and direct this saved water to cultivate new areas with crops have low self-sufficiency ratios? Under climate change in 2030, would deficit irrigation practice have the same role it plays under the current conditions? This book will appeal to students and researchers involved with water scarcity and food security.
Crop Yield Response To Deficit Irrigation
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Author : C. Kirda
language : en
Publisher: Springer Science & Business Media
Release Date : 1999
Crop Yield Response To Deficit Irrigation written by C. Kirda and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Nature categories.
This book discusses general concept and management issues of deficient irrigation practices, covering a wide range of field crops including cotton, maize, soybean, wheat, sugarcane, and the like, based on five years of field research implemented in fourteen different countries, in Latin America, Africa, Europe and Asia. Additionally, guidelines are given for experimental methodology and data analysis for evaluating crop yield response to deficient irrigation. Experimental data, discussions and cited references will be an asset not only to field irrigation engineers but also to research scientists including soil and irrigation scientists and agronomists, for whom the book would be an invaluable reference source.
Deficit Irrigation Practices
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Author : Food and Agriculture Org.
language : en
Publisher:
Release Date : 2004-01-01
Deficit Irrigation Practices written by Food and Agriculture Org. and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-01-01 with Irrigation categories.
Deficit Irrigation For Wheat Cultivation Under Limited Water Supply Condition
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Author : Hossain Ali
language : en
Publisher: Universal-Publishers
Release Date : 2008-11
Deficit Irrigation For Wheat Cultivation Under Limited Water Supply Condition written by Hossain Ali and has been published by Universal-Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-11 with Health & Fitness categories.
Vertical and horizontal expansion of irrigated agriculture to feed the increasing population has contributed to excessive groundwater withdrawal and affected the availability of water in terms of both quality and quantity. To sustain agricultural growth, strategic measures should be adopted to reduce water consumption while minimizing adverse effect on yield. The effect of deficit irrigation on wheat yield was studied in three consecutive years (2002-03 to 2004-05) in field and pot. Ten irrigation treatments were imposed in a randomized complete block (RCB) design covering full deficit, no deficit at all, single deficit at different stages, and alternate deficits. Water deficit was created by withholding irrigation at different growth stages. The results indicate that deficit irrigation strategies affected all aspects of plant growth (leaf area index, chlorophyll content, root growth, nutrient uptake, plant height) adversely. Yield attributes were affected by deficit irrigation treatments although they are not statistically significant in all cases. Differences in grain and straw yield among the partial- and no-deficit treatments were small, and statistically insignificant in most cases. When compared within single-deficit treatments, the grain yield reduction was in the order to water deficit at phases: CRI> maximum tillering > booting - heading >flowering- soft dough. The crop coefficient (kc) under different ET0 methods for early, crop development, middle, and late period ranged from 0.54 to 0.96, 0.95 to 1.36, 1.2 to 1.62, and 0.68 to 1.05, respectively. On average, yield response factor (ky) for early, maximum tillering, booting-heading, and flowering-soft dough stages was 0.27, 0.21, 0.25, and 0.17, respectively. The sensitivity index (?i, of Jensen model) for early, vegetative, booting-heading, and flowering-soft dough phases was 0.35, 0.22, 0.31, and 0.14, respectively. From the evaluation of yield, irrigation amount, irrigation water productivity, relative water savings, relative yield reduction, and maximum profit under limited water resource condition, it can be concluded that when limited quantities of water is available, preference should be given to irrigate first at CRI (if one irrigation is available), then at CRI and booting-heading (if two irrigations are available), and next at CRI, maximum tillering and booting-heading (if three irrigations are available) stages of growth.
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.
Farmer Response To Rationed And Uncertain Irrigation Supplies
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Author : C. J. Perry
language : en
Publisher: IWMI
Release Date : 1998
Farmer Response To Rationed And Uncertain Irrigation Supplies written by C. J. Perry and has been published by IWMI this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Irrigation categories.
Explores the theoretical and actual responses of farmers faced with irrigation supplies that are limited in relation to available land and labor resources, and where the actual schedule and available volume for delivery are uncertain.
Deficit Irrigation
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Author : Arega Mulu
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2012
Deficit Irrigation written by Arega Mulu and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
In the context improving water productivity, there is a growing interest in deficit irrigation, an irrigation practice where by water supply is reduced below maximum levels and mild stress allowed with minimal effect of yield. Recognizing the potential of deficit irrigation practice, conserving scarce water resource, increasing farm productivity and enabling environmental protection this book presents the result of a number of deficit irrigation studies carried out for onion crop with a review of the impact of reduced water supplies on crop yield. The study also presents the latest research concepts and involves various practices for deficit irrigation. The overall finding in this book contributes that deficit irrigation can be beneficial where appropriately applied. Substantial savings of water can be achieved with little impact on the quality and quantity of yield.
Deficit Irrigation Practices
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Author : FAO.
language : en
Publisher:
Release Date : 2002
Deficit Irrigation Practices written by FAO. and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Deficit irrigation categories.
Deficit Irrigation In Citrus
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Author : Pravukalyan Panigrahi
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2014-09-09
Deficit Irrigation In Citrus written by Pravukalyan Panigrahi and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-09-09 with categories.
Citrus is one of the major irrigated fruit crops in world. Shortage of irrigation water in critical growth stages not only reduces fruit yield but causes citrus decline. Deficit irrigation with drip system is one of the viable water management techniques to sustain fruit yield with higher water use efficiency and improved fruit quality in citrus. This book will give an insight knowledge of citrus tree response to deficit irrigation and guide the researchers, irrigation managers and students to do further research on citrus water management.