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Over the past 40 years, the SIP meetings have played a central role in the development of the field of insect-plant relationships, providing both a show-case for current research as well as a forum for the airing and development of influential new ideas. The 10th symposium, held 4-10 July 1998, in Oxford, followed that tradition. The present volume includes a representative selection of fully refereed papers from the meeting, plus a listing of the titles of all presentations. The volume includes reviews of major areas within the subject, along with detailed experimental studies. Topics covered include central neural and chemosensory bases of host plant recognition, integrative studies of insect behaviour, tritrophic interactions, plant defences, insect life histories, plant growth responses, microbial partners in insect-plant associations, and genetic bases of host plant associations. The book provides a key source for students and research workers in the field of insect-plant relationships.
The book is intended for scientists, brewers and students, who wish to delve more deeply into the world of hops. From the seedling to the bottled beer, this book communicates and clearly elucidates the latest scientific and technical findings as well as the principal elements in the value chain of hops. This book provides those curious about hops with an up-to-date and comprehensive guide to all relevant aspects of this fascinating plant.
"Hoptopia argues that the current revolution in craft beer is the product of a complex global history that converged in the hop fields of Oregon's Willamette Valley. What spawned from an ideal environment and the ability of regional farmers to grow the crop rapidly transformed into something far greater because Oregon farmers depended on the importation of rootstock, knowledge, technology, and goods not only from Europe and the Eastern United States but also from Asia, Latin America, and Australasia. They also relied upon a seasonal labor supply of people from all of these areas as a supplement to local Euroamerican and indigenous communities to harvest their crops. In turn, Oregon hop farmers reciprocated in exchanges of plants and ideas with growers and scientists around the world, and, of course, sent their cured hops into the global marketplace. These global exchanges occurred not only during Oregon's golden era of hop growing in the late nineteenth and early twentieth centuries, but through to the present in the midst of the craft beer revival. The title of this book, Hoptopia, is a nod to Portland's title of Beervana and the Willamette Valley's claim as an agricultural Eden from the mid-nineteenth century onward. But the story is fundamentally about how seemingly niche agricultural regions do not exist and have never existed independently of the flow of people, ideas, goods, and biology from other parts of the world. To define Hoptopia is to define the Willamette Valley's hop and beer industries as the culmination of all of this local and global history. With the hop itself as a central character, this book aims to connect twenty-first century consumers to agricultural lands and histories that have been forgotten in an era of industrial food production"--Provided by publisher.
It is difficult to believe that at one time hops were very much the marginalized ingredient of modern beer, until the burgeoning craft beer movement in America reignited the industry's enthusiasm for hop-forward beer. The history of hops and their use in beer is long and shrouded in mystery to this day, but Stan Hieronymous has gamely teased apart the many threads as best anyone can, lending credence where due and scotching unfounded claims when appropriate. It is just one example of the deep research through history books, research articles, and first-hand interviews with present-day experts and growers that has enabled Stan to produce a wide-ranging, engaging account of this essential beer ingredient. While they have an exalted status with today's craft brewers, many may not be aware of the journey hops take to bring them, neatly baled or pressed into blocks and pellets, into the brewhouse. Stan paints a detailed and, at times, personal portrait of the life of hops, weaving technical information about hop growing and anatomy with insights from families who have been running their hop farms for generations. The author takes the reader on a tour of the main growing regions of central Europe, where the famous landrace varieties of Slovenia, the Czech Republic, and Germany originate, to England and thence to North America, and latterly, Australia and New Zealand. Growing hops and supplying the global brewing industry has always been a hard-nosed business, and Stan presents statistics on yields, acreage, wilt and other diseases, interspersed with words from the farmers themselves that illustrate the challenges and uncertainties hop growers face. Along the way, Stan gives details about some of the most well-known varieties—Saaz, Hallertau, Tettnang, Golding, Fuggle, Cluster, Cascade, Willamette, Citra, Amarillo, Nelson Sauvin, and many others—and their history of use in the Old World and New World. The section culminates in a catalog of 105 hop varieties in use today, with a brief description of character and vital statistics for each. Of course, the art and science of using hops in making beer is not forgotten. Once the hops have been harvested, processed, and delivered to the brewery, they can be used in myriad ways. The author moves from the toil of the hop gardens to that of the brewhouse, again presenting a blend of history and present-day interviews and research articles to explain alpha acids, beta acids, bitterness, harshness, smoothness, and the deterioration of bittering flavors over time. Perception is all important when discussing bitterness, and the author touches on genetics, evolution, the vagaries of individuals' perceptions of bitterness, and changing tastes, such as the “lupulin shift.” The meaning of the international bitterness unit, or IBU, is not always properly understood and here Stan lays out a brief history of how the IBU came to be and an appreciation of the many variables affecting utilization in the boil and final bitterness in beer. Adding hops is not as simple as it sounds, and Stan's research illustrates that if you ask ten brewers about something you will get eleven opinions. Early additions, late additions, continuous hopping, first wort hopping, and hop bursting are all discussed with a healthy dose of pragmatic wisdom from brewers and a pinch of chemistry. There then follows an entire chapter devoted to the druidic art of dry hopping, following its commonplace usage in nineteenth-century England to the modern applications found in today's US craft brewing scene. The author uncovers hop plugs, hop coffins, and the “pendulum method,” along with the famous hop rocket and hop torpedo used by some of America's leading craft breweries. Every brewer has their dry hopping method and, gratifyingly, many are happy to share with the author, making this chapter a great source for inspiration and ideas. Many of the brewers the author interviewed were also happy to share recipes. There are 16 recipes from breweries in America, Belgium, Czech Republic, Denmark, England, Germany, and New Zealand. These not only present delicious beers but give some insight into how professional brewers design their recipes to get the most out of their hops. As always, Stan imparts wisdom in an engaging and accessible fashion, making this an amazing compendium on “every brewer's favorite flower.”