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This pamphlet opens the diaries kept by Melville and Frances Herskovits on their famous 1920s expedition deep into the South American jungle
Explains what roots look like and how they function in plants.
Understanding Roots uncovers one of the greatest mysteries underground—the secret lives and magical workings of the roots that move and grow invisibly beneath our feet. Roots, it seems, do more than just keep a plant from falling over: they gather water and nutrients, exude wondrous elixirs to create good soil, make friends with microbes and fungi, communicate with other roots, and adapt themselves to all manner of soils, winds, and climates, nourishing and sustaining our gardens, lawns, and woodlands. Understanding Roots contains over 115 enchanting and revealing root drawings that most people have never seen, from prairies, grasslands, and deserts, as well as drawings based on excavations of vegetable, fruit, nut, and ornamental tree roots. Every root system presented in this book was drawn by people literally working in the trenches, sketching the roots where they grew. The text provides a verydetailed review of all aspects of transplanting; describes how roots work their magic to improve soil nutrients; investigates the hidden life of soil microbes and their mysterious relationship to roots; explores the question of whether deep roots really gather more unique nutrients than shallow roots; shares the latest research about the mysteries of mycorrhizal (good fungal) association; shows you exactly where to put your fertilizer, compost, water, and mulch to help plants flourish; tells you why gray water increases crop yields more than fresh water; and, most importantly, reveals the science behind all the above (with citations for each scientific paper). This book contains at least eighty percent more new information, more results of the latest in-depth and up-to-date explorations, and even more helpful guidelines on roots than the author’s previous book (Roots Demystified: Change Your Garden Habits to Help Roots Thrive). This is not a revised edition—it’s a whole new stand-alone book.
The third edition of a standard resource, this book offers a state-of-the-art, multi-disciplinary presentation of plant roots. It examines structure and development, assemblage of root systems, metabolism and growth, stressful environments, and interactions at the rhizosphere. Reflecting the explosion of advances and emerging technologies in the field, the book presents developments in the study of root origin, composition, formation, and behavior for the production of novel pharmaceutical and medicinal compounds, agrochemicals, dyes, flavors, and pesticides. It details breakthroughs in genetics, molecular biology, growth substance physiology, biotechnology, and biomechanics.
The root system is a vital part of the plant and therefore understanding roots and their functioning is key to agricultural, plant and soil scientists. In Plant Roots Professor Peter Gregory brings together recent developments in techniques and an improved understanding of plant and soil interactions to present a comprehensive look at this important relationship, covering: Root response to, and modification of, soils Genetic control of roots’ responses to the environment Use of modern techniques in imaging, molecular biology and analytical chemistry Practical exploitation of root characters This book will be a vital tool for plant, crop, soil and agricultural scientists, plant physiologists, environmental scientists, ecologists and hydrologists. It will be a valuable addition to libraries in universities, agricultural colleges and research establishments where these subjects are studied and taught.
Books in this series introduce children to different parts of plants. Simple, accessible text breaks down crucial concepts and key vocabulary, and stunning photographs of a wide variety of plants show how diverse plants can be. In Roots, children learn about roots, including where they can be found, what they look like and the vital jobs they do for plants.
Hailed by Andre Gide as the patron saint of all outsiders, Simone Weil's short life was ample testimony to her beliefs. In 1942 she fled France along with her family, going firstly to America. She then moved back to London in order to work with de Gaulle. Published posthumously The Need for Roots was a direct result of this collaboration. Its purpose was to help rebuild France after the war. In this, her most famous book, Weil reflects on the importance of religious and political social structures in the life of the individual. She wrote that one of the basic obligations we have as human beings is to not let another suffer from hunger. Equally as important, however, is our duty towards our community: we may have declared various human rights, but we have overlooked the obligations and this has left us self-righteous and rootless. She could easily have been issuing a direct warning to us today, the citizens of Century 21.
The decade since the publication of the third edition of this volume has been an era of great progress in biology in general and the plant sciences in particular. This is especially true with the advancements brought on by the sequencing of whole genomes of model organisms and the development of "omics" techniques. This fourth edition of Plant Roots: The Hidden Half reflects these developments that have transformed not only the field of biology, but also the many facets of root science. Highlights of this new edition include: The basics of root research and their evolution and role in the global context of soil development and atmosphere composition New understandings about roots gained in the post-genomic era, for example, how the development of roots became possible, and the genetic basis required for this to occur The mechanisms that determine root structure, with chapters on cellular patterning, lateral root and vascular development, the molecular basis of adventitious roots, and other topics Plant hormone action and signaling pathways that control root development, including new chapters on strigolactones and brassinosteroids Soil resource acquisition from agricultural and ecological perspectives Root response to stress, with chapters that address the impact of the genomic revolution on this topic Root-rhizosphere interactions, from beneficial microorganisms to detrimental nematodes Modern research techniques for the field and the lab Each chapter not only presents a clear summation of the topic under discussion, but also includes a vision of what is to be expected in the years to come. The wide coverage of themes in this volume continues the tradition that makes this work recognized as a fundamental source of information for root scientists at all levels.
From Memoria Press: We are often asked if we have a program that includes the study of both Latin and Greek roots. We do now! Roots of English is an introduction to English, designed for students as young as third grade, but it is also a great test prep program for older students planning on taking any test with a vocabulary section. Most of the Latin roots covered in this book correspond to the Latina Christiana I Latin vocabulary set. The course also introduces Greek roots commonly found in English words. Words with Latin and Greek roots are longer and more difficult than the short words for ordinary objects that form the first layer of an English-speaking child s vocabulary. Their meanings are more nuanced, more specialized. In order to acquire these words and learn how to use them appropriately, a young student needs to understand the meanings of their roots, prefixes, and suffixes. Roots of English presents careful analysis of these word elements so that the student learns not only the modern meanings of the words but also their underlying, ancient meanings. Context exercises and periodic quizzes help the student learn the correct and appropriate uses of these words. Roots of English may be used along with Latina Christiana I Latin course. Roots of English is, in part, a presentation of the basic Latin roots introduced in Memoria Press Book of Roots I, but with the addition of the basic Greek roots."