Estimation of Evaporation from Rice Irrigation Using Stable Isotopes D and 18o PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Estimation of Evaporation from Rice Irrigation Using Stable Isotopes D and 18o PDF full book. Access full book title Estimation of Evaporation from Rice Irrigation Using Stable Isotopes D and 18o by Rik Whitehead. Download full books in PDF and EPUB format.
Author: Rik Whitehead
Publisher:
ISBN:
Category : Evaporation measurement
Languages : en
Pages : 40
Get Book Here
Book Description
Author: Rik Whitehead
Publisher:
ISBN:
Category : Evaporation measurement
Languages : en
Pages : 40
Get Book Here
Book Description
Author: Lincoln Grevengoed
Publisher:
ISBN:
Category : Irrigation farming
Languages : en
Pages : 0
Get Book Here
Book Description
In regions where groundwater is used for irrigation, significant water losses take place due to evaporation. Previous studies demonstrated the utility of stable oxygen and hydrogen isotopes in estimating evaporative water loss experienced during return flow back to an aquifer. Unlike arid regions where the other studies took place, this study examined the region around Kalamazoo, Michigan, the United States, which experiences a more temperate climate. Irrigation in the Kalamazoo area primarily uses center-pivot systems supplied by wells, unlike flood irrigation in previous study areas. Water samples were taken periodically from wells close to center-pivot irrigation systems. Water losses due to evaporation were estimated using stable oxygen and hydrogen isotopes, which are effective tracers for water. This approach was possible in the Kalamazoo area since the distribution of oxygen and hydrogen isotopes in local precipitation, which is the source of groundwater recharge, is known based on years of measurements. Isotope analyses during the irrigation season suggest water loss due to evaporation is approximately 14.3%. This is less than what was estimated by previous studies in arid climate zones. Evaporative water loss was greater at wells near cornfields than at wells that supplied other crop types. There was little expected correlation between the groundwater’s isotope ratio values and the change in chloride concentration. This is likely due to an external input of chloride from road salt used in winter months.
Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 972
Get Book Here
Book Description
Author: B. A. M. Bouman
Publisher: Int. Rice Res. Inst.
ISBN: 9712202194
Category : Rice
Languages : en
Pages : 59
Get Book Here
Book Description
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9251085196
Category : Technology & Engineering
Languages : en
Pages : 124
Get Book Here
Book Description
FAO’s best-selling 2011 publication, Save and Grow, proposed a new paradigm of agriculture, one that is both highly productive and environmentally sustainable. This new book looks at the application of “Save and Grow” practices and technologies to production of the world’s key food security crops – maize, rice and wheat. With examples drawn from developing countries worldwide, it shows how eco-friendly farming systems are helping smallholder producers to boost cereal yields, improve their incomes and livelihoods, conserve natural resources, reduce negative impacts on the environment, and build resilience to climate change. The book will be a valuable reference for policymakers and development practitioners guiding the transition to sustainable food and agriculture.
Author:
Publisher:
ISBN:
Category : Agricultural ecology
Languages : en
Pages : 804
Get Book Here
Book Description
Author: Shouichi Yoshida
Publisher: Int. Rice Res. Inst.
ISBN: 9711040522
Category : Rice
Languages : en
Pages : 278
Get Book Here
Book Description
Growth and development of the rice plant. Climatic environments and its influence. Mineral nutrition of rice. Nutritional disorders. Photosynthesis and respiration. Rice plant characters in relation to yielding ability. Physiological analysis of rice yield.
Author:
Publisher:
ISBN:
Category : Cosmic physics
Languages : en
Pages : 632
Get Book Here
Book Description
Author: International Rice Research Institute
Publisher: Int. Rice Res. Inst.
ISBN: 9711040786
Category : Crop yields
Languages : en
Pages : 422
Get Book Here
Book Description
Author: Mohammad Zaman
Publisher: Springer
ISBN: 331996190X
Category : Nature
Languages : en
Pages : 164
Get Book Here
Book Description
This open access book is an outcome of the collaboration between the Soil and Water Management & Crop Nutrition Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications, International Atomic Energy Agency (IAEA), Vienna, Austria, and Dr. Shabbir A Shahid, Senior Salinity Management Expert, Freelancer based in United Arab Emirates.The objective of this book is to develop protocols for salinity and sodicity assessment and develop mitigation and adaptation measures to use saline and sodic soils sustainably. The focus is on important issues related to salinity and sodicity and to describe these in an easy and user friendly way. The information has been compiled from the latest published literature and from the authors’ publications specific to the subject matter. The book consists of six chapters. Chapter 1 introduces the terms salinity and sodicity and describes various salinity classification systems commonly used around the world. Chapter 2 reviews global distribution of salinization and socioeconomic aspects related to salinity and crop production. Chapters 3 covers comprehensively salinity and sodicity adaptation and mitigation options including physical, chemical, hydrological and biological methods. Chapter 4 discusses the efforts that have been made to demonstrate the development of soil salinity zones under different irrigation systems. Chapter 5 discusses the quality of irrigation water, boron toxicity and relative tolerance to boron, the effects of chlorides on crops. Chapter 6 introduces the role of nuclear techniques in saline agriculture.
