Phosphorus (P) is an essential macronutrient for plant growth. It is as phosphate that plants take up P from the soil solution. Since little phosphate is available to plants in most soils, plants have evolved a range of mechanisms to acquire and use P efficiently - including the development of symbiotic relationships that help them access sources of phosphorus beyond the plant's own range. At the same time, in agricultural systems, applications of inorganic phosphate fertilizers aimed at overcoming phosphate limitation are unsustainable and can cause pollution.

This latest volume in Springer's Plant Ecophysiology series takes an in-depth look at these diverse plant-phosphorus interactions in natural and agricultural environments, presenting a series of critical reviews on the current status of research. In particular, the book presents a wealth of information on the genetic and phenotypic variation in natural plant ecosystems adapted to low P availability, which could be of particular relevance to developing new crop varieties with enhanced abilities to grow under P-limiting conditions.

The book provides a valuable reference material for graduates and research scientists working in the field of plant-phosphorus interactions, as well as for those working in plant breeding and sustainable agricultural development.

Potatoes are one of the world's key food crops. Their nutritional value, and the fact that they can be grown with relatively few inputs in a wide range of environments, makes them an important food security crop. However, yields in developing countries are held back by factors such as poor cultivation practices and the impact of pests and diseases, whilst more intensive systems need to become more 'climate smart' both to minimise their environmental impact and adapt to climate change. This volume looks at key research on improving cultivation techniques at each stage in the value chain for potato production. Chapters in Part 1 range from modelling growth to nutrient and irrigation management as well as post-harvest storage. Part 2 reviews advances in understanding and managing fungal, bacterial and viral diseases as well as the management of insect and nematode pests. With its distinguished editor and international team of expert authors, this will be a standard reference for potato scientists, growers, government and non-government agencies supporting potato cultivation. Volume 1 looks at breeding and aspects of quality.

Across the world governments in mature industrial and post-industrial economies are concerned about the ageing population. Dealing directly and exclusively with the issue of older workers, this book brings together up-to-the-minute research findings by many of the leading researchers and writers in the field. The duration and quality of working lives and the timing and circustances of retirement are of growing concern, especially in those cases where employers' demands and imperatives clash with employees' wishes. The contributions in this volume focus upon various measures taken by the state and employers to foster the employment of older workers in Britain, mainland Europe, the US and Japan. The authors address key issues that will influence public policy, exploring what workers over 50 want, the impact of the ageing workforce on employer policies and the implications for governments in promoting and supporting extended working lives. The book is aimed at academics, students, policy makers and other professionals (such as training managers, HR professionals and trade unionists) interested in contemporary issues within social policy, the sociology of ageing, and human resource and diversity management. It wil also be of interest to older workers themselves.

This collection reviews current research on understanding nutrient cycles, the ways crops process nutrients, the environmental effects of fertilizer use and how this understanding can be used to improve nutrient use efficiency for a more resource-efficient and climate-smart agriculture. Parts 1-3 summarise research on the primary macronutrients: nitrogen, phosphorus and potassium. Chapters review what we know about nutrient cycles, crop nutrient processing, potential environmental effects and ways of optimising nutrient use efficiency (NUE). The fourth section of the book discusses secondary macronutrients and micronutrients including: calcium, iron, zinc, boron, manganese and molybdenum as well as soil organic matter. The final part of the book reviews research on optimising fertiliser use. Chapters cover topics such as assessing nutrient availability and advances in integrated plant nutrient management. Other chapters discuss enhanced efficiency fertilisers, the use of bio-effectors/bio-stimulants, fertigation techniques, foliar fertilizers and the use of treated wastes in crop nutrition.

Phosphorus (P) is an essential macronutrient for plant growth. It is as phosphate that plants take up P from the soil solution. Since little phosphate is available to plants in most soils, plants have evolved a range of mechanisms to acquire and use P efficiently - including the development of symbiotic relationships that help them access sources of phosphorus beyond the plant's own range. At the same time, in agricultural systems, applications of inorganic phosphate fertilizers aimed at overcoming phosphate limitation are unsustainable and can cause pollution. This latest volume in Springer's Plant Ecophysiology series takes an in-depth look at these diverse plant-phosphorus interactions in natural and agricultural environments, presenting a series of critical reviews on the current status of research. In particular, the book presents a wealth of information on the genetic and phenotypic variation in natural plant ecosystems adapted to low P availability, which could be of particular relevance to developing new crop varieties with enhanced abilities to grow under P-limiting conditions. The book provides a valuable reference material for graduates and research scientists working in the field of plant-phosphorus interactions, as well as for those working in plant breeding and sustainable agricultural development.

Across the world, Governments in mature industrial and post-industrial economies are concerned about the ageing population. Dealing directly and exclusively with the issue of older workers, this book brings together up-to-the minute research findings by many of the leading researchers and writers in the field. The authors address key issues that will influence public policy in the UK and beyond, including: What do workers over 50 want: the opportunity to retire early, to retire gradually or to carry on working past state pension ages? What impact will an ageing workforce have on employer policies towards recruitment, training, career management and retirement? How will the government promote the benefits of extending working lives, and what supports will older workers and their employers need from the government's pension, taxation and benefits regimes? The duration and quality of working lives, and the timing and circumstances of retirement is of growing concern, especially in those cases where employers' demands and imperatives clash with employees' wishes. The contributions in this volume focus upon various measures taken by the state and employers to foster the employment of older workers in Britain, mainland Europe, the USA and Japan. The book is aimed at academics, students, policy-makers and other professionals (e.g. training managers, HR professionals and trade unionists) interested in contemporary issues within social policy, sociology of ageing, human resource and diversity management. It will also be of interest to older workers themselves.