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Books in Agricultural and biological sciences

The Agricultural and Biological Sciences collection advances science-based knowledge for the improvement of animal and plant life and for secure food systems that produce nutritious, novel, sustainable foods with minimal environmental impact. Food Science titles include not only those products from agriculture but all other aspects from food production to nutrition, health and safety, chemistry to security, policy, law and regulation. Biological Sciences address animal behaviour and biodiversity, organismal and evolutionary biology, entomology, marine biology and aquaculture, plant science and forestry.

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4031-4040 of 5503 results in All results

An Introduction to Rumen Studies

  • 1st Edition
  • January 27, 1986
  • J. W. Czerkawski
  • English
  • eBook
    9 7 8 - 1 - 4 8 3 2 - 9 2 9 8 - 4
The rumen is an object of study for many types of biological scientist, from anatomists to microbiologists, and more recently even mathematicians. The developments and use of various experimental techniques have enabled much progress to be made in rumen studies. Several chapters of this book concentrate on these techniques and concepts that stem from their application. Biochemical and microbial interrelationships are dealt with fully, with an emphasis on the integrated nature of the rumen's contents. The book concludes by considering the most fruitful approaches that might lead to a more complete understanding of this complex and efficient organ. Each chapter is a complete unit that can be read and understood without reference to other chapters. A general reading list at the end of each chapter, together with more detailed references, will help to launch the student into any specific area of rumen studies.

Plant Production and Management under Drought Conditions

  • 1st Edition
  • Volume 12
  • January 1, 1986
  • J.F. Stone + 1 more
  • English
  • eBook
    9 7 8 - 0 - 4 4 4 - 6 0 0 0 4 - 2
For some years, workers have been investigating the possibilities of integrating knowledge from soil and atmospheric sciences, crop physiology, and genetics in order to model crop response to water stress and breed plants for drought resistance.This book turns the theory into practice. Information, gathered from recent symposia and research journals, have been built upon by the authors. Up-to-date practices are cited, new practices devised, and approaches for scientific applications specified. The authors have devised numerous examples and applications for their approaches. Attention has been given to making these approaches credible in the light of economic and energy limitations. Because application of such practice over a wide area requires wide-areal sensing and measurement, recent advances in remote sensing for these purposes are outlined with methodology for practical application.The book will be of interest to a wide readership including crop managers and producers, soil scientists, agricultural micrometeorologists, plant breeders, water managers and stress physiologists.

Spider Mites

  • 1st Edition
  • Volume 1A
  • January 1, 1986
  • Bozzano G Luisa
  • English

Soil Physics with BASIC

  • 1st Edition
  • Volume 14
  • November 1, 1985
  • G.S. Campbell
  • English
  • eBook
    9 7 8 - 0 - 0 8 - 0 8 6 9 8 2 - 7
This book covers material taught in a graduate-level soil physics course at Washington State University. While most soil physics courses dwell mainly on deriving rather than solving the differential equations for transport, the author's approach is to focus on solutions. Graduate students in agricultural and biological sciences usually have a good working knowledge of algebra and calculus, but not of differential equations. In order to teach methods for solving very difficult differential equations with difficult boundary conditions using fairly simple mathematical tools, the author uses numerical procedures on microcomputers to solve the differential equations. Numerical methods convert differential equations into algebraic equations which can be solved using conventional methods of linear algebra.This book reflects the philosophy used in the course. Each chapter introduces soil physics concepts, generally in the conventional way. Most chapters then go on to develop simple computer programs to solve the equations and illustrate the points made in the discussion. Problems at the end of each chapter help the reader practice using the concepts introduced in the chapter. The problems and computer programs are an integral part of the presentation, and readers are strongly encouraged to experiment with each model until both the working of the model and the concepts it teaches are familiar. Although the programs are generally short and relatively simple, they are suitable for use as submodels in large, general-purpose models of the soil-plant-atmosphere system, and have been used in this way by the author and by several of his students.Teachers and students alike will welcome this new textbook. It will enable graduate students to understand and solve transport problems which exist in field situations, and will provide them with a good working knowledge of soil physics - fundamental to so many other areas in soil, plant and engineering sciences.

Soil Cutting and Tillage

  • 1st Edition
  • Volume 7
  • October 1, 1985
  • E. McKyes
  • English
  • eBook
    9 7 8 - 0 - 4 4 4 - 6 0 1 0 4 - 9
After giving a brief history of tillage practices and implements used throughout the world dating back to ancient times, this book goes on to describe the basic soil mechanics techniques needed to calculate the forces developed in soil by simple-shaped cutting tools. The methods of measuring soil mechanical properties, water pressure in soil and shear rate effects are touched upon. A review is given of two and three dimensional soil cutting mathematical mechanics models to predict soil cutting forces and soil volumes disturbed by cutting and tillage tools, as well as the state-of-the-art of soil loosening, structural rearrangement and plant growth as affected by tillage tools. The author also includes an introduction to the analysis of traction machines. There are many numerical examples of mechanical analyses and predictions worked out in the various sections of the book as well as numerous unsolved problems at the end of a number of the chapters.Written in a textbook style, this monograph is ideal for anyone wanting to learn modern techniques for the mechanical description of soil cutting and tillage forces and soil volumes disturbed. It also provides a reference for analytical formulae and calculated force forces. It will be of interest to universities and colleges worldwide which have Agricultural Engineering Programs, Civil and Mechanical Engineering schools which specialize in soil mechanics and construction machinery as well as to research stations worldwide with interests in soil tillage, soil physics etc.

Advances in Marine Biology

  • 1st Edition
  • Volume 22
  • August 27, 1985
  • John H S Blaxter + 2 more
  • English
  • eBook
    9 7 8 - 0 - 0 8 - 0 5 7 9 4 5 - 0

Fish Aquaculture

  • 1st Edition
  • July 15, 1985
  • C.P.B. Meske + 1 more
  • English
  • eBook
    9 7 8 - 1 - 4 8 3 2 - 9 9 1 9 - 8
Aquaculture has gained a momentum throughout the world during recent decades which is unparalleled in other branches of food production. This book describes methods currently used for the production of those warm water table fish which are of major importance. Included are experiments and procedures which will help to combat the growing food problem through new production methods for animal protein. The aim of the work presented here is to promote the continuous production of warm water table fish independently of climate or environment within the least necessary space and even in regions with unsuitable weather or topography.