Principles of Agronomy for Sustainable Agriculture PDF Download
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Author: Francisco J. Villalobos
Publisher: Springer
ISBN: 3319461168
Category : Technology & Engineering
Languages : en
Pages : 543
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Book Description
This textbook explains the various aspects of sustainable agricultures to undergraduate and graduate students. The book first quantifies the components of the crop energy balance, i.e. the partitioning of net radiation, and their effect on the thermal environment of the canopy. The soil water balance and the quantification of its main component (evapotranspiration) are studied to determine the availability of water to rain fed crops and to calculate crop water requirements. Then it sets the limitations of crop production in relation to crop phenology, radiation interception and resource availability (e.g. nutrients). With that in mind the different agricultural techniques (sowing, tillage, irrigation, fertilization, harvest, application of pesticides, etc.) are analyzed with special emphasis in quantifying the inputs (sowing rates, fertilizer amounts, irrigation schedules, tillage plans) required for a given target yield under specific environmental conditions (soil & climate). For all techniques strategies are provided for improving the ratio productivity/resource use while ensuring sustainability. The book comes with online practical focusing on the key aspects of management in a crop rotation (collecting weather data, calculating productivity, sowing rates, irrigation programs, fertilizers rates etc).
Author: Francisco J. Villalobos
Publisher: Springer
ISBN: 3319461168
Category : Technology & Engineering
Languages : en
Pages : 543
Get Book Here
Book Description
This textbook explains the various aspects of sustainable agricultures to undergraduate and graduate students. The book first quantifies the components of the crop energy balance, i.e. the partitioning of net radiation, and their effect on the thermal environment of the canopy. The soil water balance and the quantification of its main component (evapotranspiration) are studied to determine the availability of water to rain fed crops and to calculate crop water requirements. Then it sets the limitations of crop production in relation to crop phenology, radiation interception and resource availability (e.g. nutrients). With that in mind the different agricultural techniques (sowing, tillage, irrigation, fertilization, harvest, application of pesticides, etc.) are analyzed with special emphasis in quantifying the inputs (sowing rates, fertilizer amounts, irrigation schedules, tillage plans) required for a given target yield under specific environmental conditions (soil & climate). For all techniques strategies are provided for improving the ratio productivity/resource use while ensuring sustainability. The book comes with online practical focusing on the key aspects of management in a crop rotation (collecting weather data, calculating productivity, sowing rates, irrigation programs, fertilizers rates etc).
Author: Mark Davies
Publisher: Routledge
ISBN: 1134874537
Category : Foreign Language Study
Languages : en
Pages : 1457
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Book Description
A Frequency Dictionary of Spanish has been fully revised and updated, including over 500 new entries, making it an invaluable resource for students of Spanish. Based on a new web-based corpus containing more than 2 billion words collected from 21 Spanish-speaking countries, the second edition of A Frequency Dictionary of Spanish provides the most expansive and up-to-date guidelines on Spanish vocabulary. Each entry is accompanied with an illustrative example and full English translation. The Dictionary provides a rich resource for language teaching and curriculum design, while a separate CD version provides the full text in a tab-delimited format ideally suited for use by corpus and computational linguistics. With entries arranged both by frequency and alphabetically, A Frequency Dictionary of Spanish enables students of all levels to get the most out of their study of vocabulary in an engaging and efficient way.
Author: Jaime Ballard
Publisher:
ISBN:
Category : Immigrant families
Languages : en
Pages : 215
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Book Description
"Immigrant and Refugee Families: Global Perspectives on Displacement and Resettlement Experiences uses a family systems lens to discuss challenges and strengths of immigrant and refugee families in the United States. Chapters address immigration policy, human rights issues, economic stress, mental health and traumatic stress, domestic violence, substance abuse, family resilience, and methods of integration."--Open Textbook Library.
Author: Dennis Tedlock
Publisher: Univ of California Press
ISBN: 0520271378
Category : History
Languages : en
Pages : 481
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Book Description
A chronological survey of Mayan literature, covering two thousand years, from the earliest hieroglyphic inscriptions to later works using the Roman alphabet.
Author: Silvina Montrul
Publisher: John Benjamins Publishing
ISBN: 9789027252975
Category : Language Arts & Disciplines
Languages : en
Pages : 436
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Book Description
This is the first book on the acquisition of Spanish that provides a state-of-the-art comprehensive overview of Spanish morphosyntactic development in monolingual and bilingual situations. Its content is organized around key grammatical themes that form the empirical base of research in generative grammar: nominal and verbal inflectional morphology, subject and object pronouns, complex structures involving movement (topicalizations, questions, relative clauses), and aspects of verb meaning that have consequences for syntax. The book argues that Universal Grammar constrains all instances of language acquisition and that there is a fundamental continuity between monolingual, bilingual, child and adult early grammatical systems. While stressing their similarities with respect to linguistic representations and processes, the book also considers important differences between these three acquisition situations with respect to the outcome of acquisition. It is also shown that many linguistic properties of Spanish are acquired earlier than in English and other languages. This book is a must read for those interested in the acquisition of Spanish from different theoretical perspectives as well as those working on the acquisition of other languages in different contexts.
Author: United States. Department of the Army
Publisher:
ISBN:
Category : Military art and science
Languages : en
Pages : 156
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Book Description
Author: Mariano Azuela
Publisher: Penguin
ISBN: 1440638527
Category : Fiction
Languages : en
Pages : 178
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Book Description
Hailed as the greatest novel of the Mexican Revolution, The Underdogs recounts the story of an illiterate but charismatic Indian peasant farmer’s part in the rebellion against Porfirio Díaz, and his subsequent loss of belief in the cause when the revolutionary alliance becomes factionalized. Azuela’s masterpiece is a timeless, authentic portrayal of peasant life, revolutionary zeal, and political disillusionment.
Author: Arnold van Huis
Publisher: Bright Sparks
ISBN: 9789251075951
Category : Conservation of natural resources
Languages : en
Pages : 0
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Book Description
Edible insects have always been a part of human diets, but in some societies there remains a degree of disdain and disgust for their consumption. Although the majority of consumed insects are gathered in forest habitats, mass-rearing systems are being developed in many countries. Insects offer a significant opportunity to merge traditional knowledge and modern science to improve human food security worldwide. This publication describes the contribution of insects to food security and examines future prospects for raising insects at a commercial scale to improve food and feed production, diversify diets, and support livelihoods in both developing and developed countries. It shows the many traditional and potential new uses of insects for direct human consumption and the opportunities for and constraints to farming them for food and feed. It examines the body of research on issues such as insect nutrition and food safety, the use of insects as animal feed, and the processing and preservation of insects and their products. It highlights the need to develop a regulatory framework to govern the use of insects for food security. And it presents case studies and examples from around the world. Edible insects are a promising alternative to the conventional production of meat, either for direct human consumption or for indirect use as feedstock. To fully realise this potential, much work needs to be done by a wide range of stakeholders. This publication will boost awareness of the many valuable roles that insects play in sustaining nature and human life, and it will stimulate debate on the expansion of the use of insects as food and feed.
Author: Mostusedwords
Publisher: Mostusedwords.com
ISBN: 9789492637208
Category : Foreign Language Study
Languages : en
Pages : 240
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Book Description
Core Spanish vocabulary Learn Spanish fast: this book contains practical vocabulary for both spoken and written Spanish. Made for beginners and intermediate students, each entry in this book contains: - English translation(s) - Spanish to English example sentences - IPA phonetic spelling - detailed Part of Speech information
Author: E. Pollard
Publisher:
ISBN: 9781851843053
Category : Computer-assisted instruction
Languages : en
Pages : 57
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Book Description
This guide summarizes current research and commentary on e-learning, examining the key issues facing organizations exploring e-learning for employee development. The guide contains six sections. The first section provides an introduction to the issue of e-learning and a summary of the issues discussed in the remainder of the guide. Section 2 summarizes the various dimensions and descriptions of e-learning, concluding with a definition of e-learning as "the delivery and administration of learning opportunities and support via computer, networked and web-based technology to help individual performance and development." Sections 3 and 4 describe potential benefits and drawbacks of e-learning. Benefits include that e-learning is timely, accessible, learner-centered, cost effective, up-to-date, quick, retainable, risk-free, consistent, interactive and collaborative, easy to track, and that it increases information technology skills. Drawbacks include that e-learning can be technology-dependent, incompatible, unsuitable for some types of training, unsuitable for some types of learners, heavily reliant on self-discipline, less interactive than one would think, initially expensive, still dependent on human support, and difficult to support with content. Section 5 discusses key issues to consider when developing e-learning, including how best to blend new e-learning technologies with traditional classroom approaches to training; whether to buy new off-the-shelf materials, develop content externally or in-house; how best to provide learner support; how trainers will adapt; and how to tell whether the strategy is working. The final section concludes with a summary of the issues and potential of e-learning. The guide includes a glossary of 13 terms and a resource guide listing 64 reports and articles, 7 websites, and 8 magazines and journals. (KC)
