Kategoria BISAC: Technology & Engineering >> Agriculture - General

Irrigated agriculture produces about 40% of all food and fibre on about 16% of all cropped land. As such, irrigated agriculture is a productive user of resources; both in terms of yield per cropped area and in yield per volume of water consumed. Many irrigation projects, however, use (divert or withdraw) much more water than consumed by the crop. The non-consumed fraction of the water may cause a variety of undesirable effects ranging from water-logging and salinity within the irrigated area to downstram water pollution.

This book discusses all components of the water balance of an...

We are entering a new era in production agronomics. Agricultural scientists the world over call for the development of techniques that simultaneously increase soil carbon storage and reduce agriculture s energy use. In response, site-specific or precision agriculture has become the focus and direction for the three motivating forces that are changing agriculture today: the expanding capacity of personal computers, the molecular biology revolution, and the recent developments in information technology such as the increasing use of geographical information systems (GIS).

Using...

The second part of this volume contains rich applications of the theory as applied to real agricultural systems. Applications include a wide area such as alternate bearing in tree crops, weed control and tillage, nonlinear vibrations in agricultural tractors, and piglet pricing analysis.

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• Uses data from archaeology, comparative linguistics, and biological anthropology to cover developments over the past 12,000 years
  
• Examines the reasons for the multiple primary origins of agriculture
  
• Focuses on agricultural origins in and dispersals out of the Middle East, central Africa, China, New Guinea, Mesoamerica and the northern Andes
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The domestic pig is perceived as an animal with intelligence and character and yet, in the industrialized world, the majority of people have had little or no contact with them. Pigs are subject to a wide range of environments from the tropics to the sub-arctic, ranging from small-scale, extensive systems to large-scale intensive systems. They may spend their whole life on one farm or may be subject to long-distance transport multiple times. Not surprisingly, many aspects of their life experiences can impact their welfare.

This book brings together a team of leading pig welfare...

Die Phytomedizin spielt im Hinblick auf die Sicherung der Welternahrung eine immer wichtigere Rolle. Dieses Buch fuhrt in kompakter Weise in die Phytomedizin ein: Welche Schaden an Pflanzen gibt es? Was kann die Phytomedizin dagegen tun? Wie funktioniert die Interaktion zwischen Pflanzen und Schadorganismen? Die 8., neu bearbeitete Auflage dieses Klassikers berucksichtigt die neuesten Erkenntnisse auf dem Gebiet der Phytomedizin.