I first became interested in the methods of planning the sequence and timing of jobs on large-scale development projects, as a field officer involved in planning and implementing mechanised farming schemes in Uganda in the mid-sixties. This interest was reinforced by experience of agro-industrial projects in both Nigeria and Iran, when it became obvious that the lax traditional methods of both planning and controll ing the implementation of agricultural and other rural development projects were very ineffective compared with those already in use in other disciplines. An extended spell as Resident Adviser on a World Bank project to strengthen planning and project management services in the agricultural sector in Sind Province, Pakistan, stimulated this interest further, and gave opportunities to develop the use of improved methods on some very complex schemes. This book summarises the experience gained in adapting critical path methods, well established in other fields, to Third World development projects, with their peculiar problems. It would not have been possible to reach this point without the help and stimulation of discussions with a large number of colleagues, includ ing John Joyce (then of Hunting Technical Services), Hatsuya Azumi (World Bank), and-particularly-Zaffar Sohrwardy and Akhtar Ali of Aarkays Associates in Karachi, during our work together. My thanks are also due to Yasin Mohammed, who typed most of the original draft; Anwar Mohammed and Irene Mills for final typing; and to my wife, Jill, for drawing the original figures.

Completely revised and up-to-date, this wide-ranging, comprehensive treatise examines the many different aspects of vegetables from an international perspective. The diversity and depth of coverage of vegetables is largely due to the extensive background and experiences of the authors, Vincent Rubatzky and Mas Yamaguchi, as well as considerable input from colleagues and expert reviewers. This logically-organized text, filled with numerous illustrations, photographs, and tables, begins with an easy-to-read introduction to such topics as: the current role of vegetables as a world food crop, the origin and classification of vegetables, vegetables in human nutrition, and plant toxicants and folklore concerning vegetables. Background material on the basic principles for growing crops and production under adverse conditions are also featured in this section. Much of the material covered in the book focuses on the major and minor vegetables, their origin, taxonomy, botany, physiology, production and post harvest handling, and composition and use. In addition, current world production statistics are provided for many vegetable crops as well as listings of important diseases, insects, and other pests for many family groups. New features of this edition include: *Three new chapters covering mushrooms, aquatic vegetables, and herbs and spices *several appendix tables listing vegetables according to family, genus, species, nutritive value, and recommended storage conditions for many vegetables The introductory chapter offers an excellent background of the role of vegetables for the beginning and advanced students, both in the U.S. and worldwide. The chapters following provide extension professionals, professors, agricultural agencies, commercial growers, and processing and seed industry personnel with a better understanding of individual vegetable species.

Agroforestry reserach and development in Australia has been largely fragmented and many of the research results have never been published and are unknown. The purpose of this volume is to comprehensively review all of the research that has taken place in the field of agroforestry in Australia, including previously unpublished results, providing readers with the latest technical and economic information about using trees in agriculture for the control of salinity and erosion, for shelter and shade, and for the production of timber, fodder and minor forest products. The book provides information concerning planted trees within all of these categories and includes special review of the management of native vegetation on farms. These papers also examine research needs where appropriate. This book stems from the National Australian Conference on 'The Role of Trees in Sustainable Agriculture' which took place in Albury, Victoria, Australia in October, 1991. Each national review paper is based upon a summary of six or more state review research and development papers, prepared specifically for the national conference. The book thus provides readers with a comprehensive overview of agroforestry rsearch in Australia, which is introduced and summarised in the first chapter.

5 Table 1.1 Continued Species Hosts Families ~-------- ----- X. campestris pv. cassavae Manihot spp. Euphorbiaceae (Wiehe and Dowson 1953) Maraite and Weyns 1979 Cassia tora, C. occidentalis, Cicer Fabaceae X. campestris pv. cassiae arietinum, Pisum sativum (Kulkarni, Patel and Dhande 1951) Dye 1978 Musaceae X. campestris pv. celebensis Musa spp. (Gaumann 1923) Dye 1978 Apiaceae X. campestris pv. centellae Centella asiatica Basnyat and Kulkarni 1979 X. campestris pv. cerealis Agropyron spp., Avena spp., Poaceae Bromus spp., Hordeum spp., (Hagborg 1942) Dye 1978 Secale cereale, Triticum spp. Aegle marmelos, Atalantia spp., Rutaceae X. campestris pv. citri Balsamocitrus paniculata, (Hasse 1915) Dye 1978 Casimiroa edulis, Chaetospermum glutinosa, Citropsis schweinfurthii, Citrus spp. and hybrids, Clausena lansium, Eremocitrus glauca, Evodia spp., Ferollia sPP" Feroniella spp., Fortunella spp., Hesperethusa crellulata, Limonia spp., Melicope triphylla, Microcitrus spp., Murraya exotica, Paramigyna longipedunculata, Poncirus trifoliata and hybrids, Severina buxifolia, Toddalia asiatica, Zanthoxylum spp.

In this book I have collected many reports on the properties of bamboo. Since I started bamboo research in 1974, I have collected many publications on bamboo. However, in contacts with other researchers I became aware of the fact that several of these publications were unknown to them. Consequently their activities in research or in bamboo projects had to start at a lower level than if they had known some of these publications. Therefore, I discussed the need for a book like this with several colleagues, and I decided to start writing. In this book I present data on properties, as published by resear chers. Certainly it is not complete; e.g. the proceedings of the bamboo workshop in Cochin in November 1988 are not included; they arrived just too late to be taken into account. On the other hand, in writing this preface I realize I have forgotten my own thesis. I do apologize to any colleague whose relevant report is not taken into account as well. I like to express my feelings of respect to the board of my faculty: they allowed me to spend so much time on this book, and they gave a considerable financial support for the printing costs."

Nematode interactions are important biological phenomena and of great significance in agriculture. It is a fascinating subject which is multidisciplinary by nature, and concerns any scientist involved with plant health. There have been marked advances in our knowledge of various aspects of the subject in the last two decades. This study area has been the subject of several reviews, but there was no exclusive text on the subject. This has stressed the need to document the information, developing a unifying theme which treated nematode interactions in a holistic manner. This book is about the inter action of plant-parasitic nematodes with other plant pathogens or root symbionts, the nature of their associations, their impact on the host and con sequential interactive effects on the involved organisms. Since nematodes are at the centre of the theme, the responsibility of understanding of other plant pathogens dealt with in this book is largely delegated to the reader. I have limited the book content to interactions with biotic pathogens and root symbionts only, for various reasons. The book embodies 16 chapters, and attempts to present balanced infor mation on various aspects of nematode interactions with other plant pathogens and root symbionts. Some chapters describe general aspects of the subject. Interactions of nematodes with specific groups of organisms are addressed in the remaining chapters."

Large-scale experimentation allows scientists to test the specific responses of ecosystems to changing environmental conditions. Researchers at Oak Ridge National Laboratory together with other Federal and University scientists conducted a large-scale climatic change experiment at the Walker Branch Watershed in Tennessee, a model upland hardwood forest in North America. This volume synthesizes mechanisms of forest ecosystem response to changing hydrologic budgets associated with climatic change drivers. The authors explain the implications of changes at both the plant and stand levels, and they extrapolate the data to ecosystem-level responses, such as changes in nutrient cycling, biodiversity and carbon sequestration. In analyzing data, they also discuss similarities and differences with other temperate deciduous forests. Source data for the experiment has been archived by the authors in the U.S. Department of Energy's Carbon Dioxide Information and Analysis Center (CDIAC) for future analysis and modeling by independent investigators.

A number of well-known forests have been the object of studies by ecological teams. Every ecologist is familiar with the names of forests such as Whytham Woods in England (Elton 1966), Solling in West Germany (Ellenberg 1971), Hubbard Brook in New Hampshire, U. S. A. (Likens et al. 1977, Bormann and Likens 1979), and ladra6s in Central Sweden (Persson 1980). The number of such team studies grew rapidly during the period of the International Biological Programme (Reichle 1981). Each of these forests represented aspects oflocal and general interest. The Niepolomice Forest in Southern Poland (Fig. 1) does not possess any spectacular features and it may be regarded as a typical forest of the lowlands of continental Europe. Situated in the Vistula River Valley, 20 km east of Cracow (50 Degrees07' N, 20 Degrees23' E) it consists of two major sections: an extensive pine forest of the Pino-Quercetum type, and a smaller, deciduous, oak-hornbeam- Fig. 1. The location of the Niepolomice Forest in Southern Poland VI Preface Tilio Carpinetum forest. This huge forested area (11,000 ha) owes its survival in one of the most densely populated parts of Europe to a long period of protection as a royal hunting ground. The period of royal protection ended abruptly at the turn of 20th century under the devastating blows of two world wars followed by perhaps an even greater danger, the effects of modern developments in heavy industry.

The concept of controlled release has attracted increasing attention over the last two decades, with the applications of this technology proliferating in diverse fields in cluding medicine, agriculture and biotechnology. Research and developmental efforts related to controlled release are multiplying in both industry and academia. The reason for this phenomenal growth is obvious. The use of a variety of biologically active agents, such as drugs, fertilizers and pesticides, has become an integral part of modern society. Along with the use of these reagents has evolved an awareness that their uncontrolled application almost inevitably induces harmful effects on the health of humans and their surrounding environments. To eliminate or minimize these harmful effects necessitates the controlled release of these chemicals. Moreover, the controlled release of substances, not usually considered toxic or hazardous, e.g., some catalysts and nutrients, can enhance their effectiveness. The number and variety of controlled release systems, differing in their physical and chemical makeup, are increasing rapidly. Proliferation almost always demands correlation, generalization and unification; it requires both the development of underlying theories of their behavior and the mechanistic interpretation of their performance. This, in turn, requires a statistical and mathematical (quantitative) treatment of the scientific information and technical data pertaining to them. A quantitative treatment can also facilitate the formulation of procedures for computer-aided design of these systems through a priori prediction of their per formance for a variety of design parameters.

A critical companion of zoosemiotics is the first attempt to systematise the study of animal communication and signification through its most important and/or problematic terms and concepts, and its most representative scholars. It is a companion, in that it attempts to cover the entire range of key terms in the field, and it's critical, in that it aims not only to describe, but also to discuss, problematise and, in some cases, resolve, these terms.

In the decade following the publication of the first edition of Cellular Biology of the Uterus, advances in this field have been so rapid as to require not merely a revision of the earlier text but an essentially new volume. Even the title of the book has been changed, to Biology of the Uterus, to reflect the incorporation of more material based on classical anatomy and physiology. This histological and embryological information provides a necessary, though often lacking, background for the protein chemist and molecular biologist, and a bridge between biochemistry and biophysics, on the one hand, and clinical medicine, on the other. Thus, major practical problems in human reproduction, such as the mode of action of contraceptive agents and the cause of the initiation of labor, may be approached on a firm scientific footing. This text deals primarily with the biology of the uterus itself (comparative and human) rather than with placentation or pregnancy, and as such is a synthesis of data derived from many techniques, conventional and modern. Inasmuch as it is clearly beyond the competence of anyone scientist to prepare such a text on the basis of personal knowledge and experience, the aid of distinguished biologists from this country and abroad was enlisted. All of these authors, acknowledged experts in their respective fields, agreed to extensive revision of their chapters or preparation of entirely new contributions.

An introductory discussion of basic chromosome structure and function preceeds the main text on the application of cytogenetic approaches to the analysis of the manipulation of both the genetic make-up and the genetic transmission system of plant breeding material. Analysis using light and electron microscopy, segregations and molecular techniques, yields information for assessing the material before and after manipulation. Much attention is given to quantitative methods. Manipulation not only involves the construction of specific genotypes, but also chromosomal transmission systems. Although analysis and manipulation in the somatic cycle are considered, the focus is on the generative cycle, with emphasis on analysis and subsequent segregation of specifically constructed material. The book is intended for plant breeders and other scientists interested in the analysis and manipulation of breeding material at the chromosomal level. Comparisons with molecular and cell biological approaches are made, and the potential of the various methods is evaluated.

It would have been very easy to expand on all the sections of the first edition but I decided to try to retain the relatively short, introductory nature of the book. Some new material has been added, particularly where it has been possible to update data, and there has been some change of emphasis in places, in order to reflect changing world conditions. The book retains its original purpose, however, of introducing systems thinking as applied to agriculture. I am grateful to Angela Hoxey for help in preparing this edition, especially in relation to the preparation of tables and figures. C. R. W. SPEDDING v Preface to the First Edition The agricultural systems of the world represent a very large subject. Their study involves a great deal of fairly detailed knowledge, as well as a grasp of the structures and functions of the systems themselves. This book has been written as an introduction to such a study and it concentrates on an overall view, rather than on the detail, partly because of the need to relate the latter to some larger picture in order to appreciate the relevance and significance of the detail. This problem-of seeing the relevance of component studies and the significance of physical, biological and economic detail, and indeed principles-is encountered by many agricultural students right at the beginning of their university careers.

In evolutionary time scales natural disturbances have affected the vegetation on Earth. During the Quaternary the forest biomes of the tropics were subjected to manifold disturbances. Climate changes and climate oscillations were associated with changing precipitation and drought regimes, flooding, siltation, landslides, etc. The prehistorical forest was also influenced by the effects of large wildlife populations. Large-scale catastrophies in the forest biomes were mainly caused by abiotic environmental alterations, the small-scale disturbances were and still are related to both biotic and abiotic processes. Both the large-and the small-scale disturbances have played a significant role in shaping distribution, dynamics, structure and composition of the paleoforest. After the expansion of hominids and early humans, and later, by modern humans, the anthropogenic influences on the tropical forest began to overlap natural disturbances. Today's anthropogenic impacts on the tropical forests differ qualitatively and quanitatively from the natural disturbances. The speed of tropical deforestation and savannization is dramatically increasing. The physical and chemical impacts of forest conversion and biomass burning add to other anthropogenic influences on the atmosphere and climate. The expected anthropogenic climate change will also have considerable impacts on the tropical flora and fauna. The book on "Tropical Forests in Transition" synthesizes information on changing environmental conditions and human impacts on the tropical forest by looking back to the paleoecology, analyzing the impact of modern human populations and modeling the future of the tropical forest in a changing environment. The aim of the book is to strengthen multidisciplinary thinking in disturbance ecology.

In this volume experts present the latest status of mathematical and statistical methods in use for the analysis and modeling of plant disease epidemics. Topics treated are - methods in multivariate analyses, ordination and classification, - modeling of temporal and spatial aspects of air- and soilborne diseases, - methods to analyse and describe competition among subpopulations, e.g. pathogen races and - their interaction with resistance genes of host plants - assemblage and use of models - mathematical simulation of epidemics. New chapters on the modeling of the spreading of diseases in air and in soil are included in this second edition.

Cotton is a multipurpose crop and produces lint, the most important source of fiber used in the textile industry, oil, seed meal, and hulls.
Twenty-three chapters on various aspects of in vitro manipulation and other biotechnological approaches to the improvement of cotton are arranged in six sections. Special emphasis is placed on interspecific hybridization, somaclonal variation, transgenic cotton resistant to insects and herbicides, and re-engineering of fiber.
This book is of special interest to advanced students, teachers, and research workers in the field of cotton breeding, genetics, tissue culture, molecular biology, and plant biotechnology in general.

Band 8 ist den Neuentwicklungen auf dem Gebiet der Herbizide gewidmet. Die Bedeutung der Herbizide ist von 1976 bis 1980 erneut gestiegen, und weltweit betragt der Herbizid-Verkauf wertmassig soviel, wie der Verkaufswert der Insekti- zide und Fungizide zusammen! Langsam bedienen sich auch, bei intensiverem Anbau von Nahrungsmitteln und Nutzkulturen, "unterentwickelte" Lander aller Arten von Pestiziden und Herbiziden, und so ist mit einer weiteren Steigerung der Herbizid-Anwendung zu rechnen. Von 1976 bis 1980 wurden viele neue Versuchsprodukte, aber vergleichsweise wenig neuartige Handelsprodukte bekannt, denn der Herbizid-Standard ist schon sehr hoch, sodass es immer schwieriger wird, Herbizide mit wesentlichen Vorteilen zu finden, zu entwickeln und zum Verkauf zu bringen. Die mengenmassig hohe Produktion wichtiger Herbizide macht es zudem schwierig, preiswertere neue Produkte herzustellen und einzufuhren. Die stark angestiegenen Forschungs-und Entwicklungskosten fur ein neues Pflanzenschutzmittel - etwa 100 Mill. D- erschweren den Fortschritt ausserordentlich. Wenngleich die meisten neuen Ver- suchs- und Handelsprodukte Substanzgruppen entstammen, deren Bedeutung schon Ende 1976 erkannt worden war, und deren erste Versuchsprodukte bereits eine Weiterentwicklung anzeigten, so wurden doch auch spektakulare Ent- deckungen gemacht, von denen es wiederum erste Versuchsprodukte gibt. Herbi- zide mit Aufwandmengen von etwa 20 g/ha, also mit extrem guter Wirksam- keit zeigen, dass der Weg in unerwartetes Neuland noch lange kein Ende hat. Schon 1976 bekannte Verbindungsklassen, wie die der Diarylether-oxyalkan- carbonsauren, nicht nur von der Entdeckerfirma Hoechst AG intensiv bearbeitet, ergaben eine Fulle neuer Herbizide mit meist selektiver Graserwirkung.

Chemicals inhibiting the biosynthesis of branched-chain amino acids form a new and promising class of herbicides. This volume discusses in an authoritative way recent developments in this field and covers important aspects of these potent herbicides (synthesis, structure-activity, mode of action, selectivity, weed resistance, metabolism).

"The book is very effective in communicating the many aspects, dimensions and interpretations of sustainable forest management (SFM)...It is clearly born out of an ambitious remit to present an overview of SFM across all its dimensions. In this, it is by and large successful... It provides an effective entry into almost any SFM topic." Review in Scottish Forestry by Professor Jaboury Ghazoul, ETH Zurich/University of Edinburgh "Achieving Sustainable Management of Tropical Forests provides an excellent and essential read for those with responsibility for managing the world's tropical forests...The editors, Dr Blaser and Dr Hardcastle, are to be congratulated for editing the chapters into a very consistent read... Each chapter is authored by an expert or experts in the particular geography and/or discipline as social, governance, tenure, biology, rural livelihoods, climate change, products etc." Journal of Forestry - Society of American Foresters Although global rates of deforestation have started to decrease, they remain alarmingly high in many tropical countries. In light of this challenge, the growing importance of sustainable forest management (SFM) has been highlighted as a means for improving sustainability across the sector. Achieving sustainable management of tropical forests summarises and reviews the rich body of research on tropical forests and how this research can be utilised to make sustainable management of tropical forests a standard implementable strategy for the future. The book features expert discussions on the economic, political and environmental contexts needed for SFM to operate successfully, including coverage of the UN's Sustainable Development Goals (SDGs). With its distinguished editors and international array of expert authors, Achieving sustainable management of tropical forests will be a standard reference for researchers in tropical forest science, international and national organisations responsible for protection and responsible stewardship of tropical forests, as well as the commercial sector harvesting and using tropical forest products.

The study of plant development in recent years has often been concerned with the effects of the environment and the possible involvement of growth substances. The prevalent belief that plant growth substances are crucial to plant development has tended to obscure rather than to clarify the underlying cellular mechanisms of development. The aim in this book is to try to focus on what is currently known, and what needs to be known, in order to explain plant development in terms that allow further experimentation at the cellular and molecular levels. We need to know where and at what level in the cell or organ the critical processes controlling development occur. Then, we will be better able to under stand how development is controlled by the genes, whether directly by the continual production of new gene transcripts or more indirectly by the genes merely defining self-regulating systems that then function autonomously. This book is not a survey of the whole of plant development but is meant to concentrate on the possible component cellular and molecular processes involved. Consequently, a basic knowledge of plant structure is assumed. The facts of plant morphogenesis can be obtained from the books listed in the General Reading section at the end of Chapter 1. Although references are not cited specifically in the text, the key references for each section are denoted by superscript numbers and listed in the Notes section at the end of each chapter."

Lord Rutherford has said that all science is either physics or stamp collecting. On that basis the study of forest biomass must be classified with stamp collecting and other such pleasurable pursuits. Japanese scientists have led the world, not only in collecting basic data, but in their attempts to systematise our knowledge of forest biomass. They have studied factors affecting dry matter production of forest trees in an attempt to approach underlying phYf'ical principles. This edition of Professor Satoo's book has been made possible the help of Dr John F. Hosner and the Virginia Poly technical Institute and State University who invited Dr Satoo to Blacksburg for three months in 1973 at about the time when he was in the final stages of preparing the Japanese version. Since then the explosion of world literature on forest biomass has continued to be fired by increasing shortages of timber supplies in many parts of the world as well as by a need to explore renewable sources of energy. In revising the original text I have attempted to maintain the input of Japanese work - much of which is not widely available outside Japan - and to update both the basic information and, where necessary, the conclusions to keep them in tune with current thinking. Those familiar with the Japanese original will find Chapter 3 largely rewritten on the basis of new work - much of which was initiated while Dr Satoo was in Blacksburg.

"Reviews of Environmental Contamination and Toxicology" contains timely review articles concerned with all aspects of chemical contaminants (including pesticides) in the total environment, including toxiological considerations and consequences. It attempts to provide concise, critical reviews of advances, philosophy, and significant areas of accomplished or needed endeavor in the total field of residues of these and other foreign chemicals in any segment of the environment, as well as toxicological implications.

The field of the molecular basis of plant disease is rapidly developing. The nineteen chapters of current information in Molecular Strategies of Pathogens and Host Plants are written by well known experts in the United States and Japan, and cover recent progress in the genetics and molecular biology of bacteria and fungi which are pathogens of plants. This research emphasizes the genes which are responsible for production of toxins, enzymes, and hormones that lead to pathogenicity and specificity in plant-pathogen interactions. Several chapters also examine the biochemistry of the plant's response to microbial attack.

The increasing use of biotechnology for the improvement of agricultural crop species has gained momentum, and recent developments (see Crops J) have shown beyond doubt the far-reaching implications of biotechnological approaches for future agricultural research and plant- breeding programs. The production of novel plants and somaclones showing resistance to pests, diseases, herbicides, and salt and the early release of disease-free as well as improved cultivars have become reality. The present volume comprises 31 chapters and deals with the impor- tance, distribution, conventional propagation, micropropagation, and methods for the in-vitro induction of genetic variability in various fruits, vegetables, grasses, and pasture crops such as grapes, strawberry, brambles, red raspberry, currants, gooseberry, kiwifruit, blueberry, cran- berry, cauliflower, cabbage, brussels sprouts, broccoli, cucumber, chico- ry, taro, rhubarb, lettuce, spinach, quinoa, kale, fescue, bromegrass, Ber- mudagrass, napier grass, foxtail millet, turtle grass and others. (The cere- als and other vegetable crops are discussed in Crops J, Vol. 2 of the series). Micropropagation of some fruit crops such as strawberry, grape, and raspberry is already being practiced on a large scale in various countries. Likewise, test-tube-derived plants of certain crops such as brassicas, let- tuce, and taro and improved pastures are being utilized, while the technology for mass propagation of certain other crops is being worked out. These recent developments emphasize the urgent need to arouse awareness among horticultural scientists and plant breeders to enable them to incorporate these modern innovative approaches into routine crop improvement programs.