The Twentieth Edition takes The Agricultural Notebook into its third century; it has been thoroughly revised & updated to reflect the considerable changes in agricultural & rural practices & policies which have taken place since publication of the previous edition. The book is divided into four parts: Crops Management Animal Production & Farm Equipment. New sections added to this edition include: 1) A Marketing Perspective on Diversification 2) Organic Farming & 3) Farming & Wildlife. Since the first edition was compiled by Primrose Mc Connell in 1883 The Agricultural Notebook has become established as the standard work of reference for all those in the farming industry. With each edition it has evolved & changed in such a way as to provide agricultural scientists students of agriculture & related subjects farmers farm managers & land agents with an abundance of current information on all aspects of the business of farming. Many comments received from lecturers & students who have used previous editions of the book have been taken into account in producing the twentieth edition. The thirty contributing authors have fully updated chapters a new clearer layout has been adopted & much new information is included in easy--to--use tables & figures. The Agricultural Notebook is an essential purchase for all students of agriculture countryside & rural studies. Professionals such as farmers land agents agricultural scientists advisers suppliers to the agriculture industry & all those with a connection & interest in the agricultural community will find a huge wealth of information within the books covers. All libraries within universities colleges & research establishments where agricultural & rural sciences are studied & taught should have multiple copies of this important new edition on their shelves.