Soil and Plant Phosphate

✍ Scribed by Johnston A.E.

• Tongue: English
• Leaves: 54
• Category: Library

✦ Synopsis

Paris: International Fertilizer Industry Association (IFA), 2000. - 54 pp.
ISBN: 2-9506299-5-4.

Phosphorus is essential to all living organisms. In nature, elemental phosphorus is always combined with other elements to form many different phosphates, some of which are very complex. This book written by A.E. Johnston, explores the pathways through which phosphorus is taken up from the soil by plants and passes from one organism to another in the food chain. Environmental issues are examined and recommendations are included to maximize fertilizer use efficiency.

C o n t e n t s.
Introduction.
The Essential Role of Phosphorus in Living Organisms.
Phosphorus in plants.
Phosphorus in animals.
The Occurrence of Phosphorus in Nature.
The Uses of Phosphorus.
Using phosphorus efficiently.
Phosphorus and the Development of Farming Systems.
Soil Phosphorus and its Availability.
The availability of different forms of soil phosphorus.
The effect of soil organic matter on phosphorus availability.
Soil organic phosphorus.
Soil physical properties and phosphorus availability.
Phosphorus Acquisition by Roots.
Plant root systems.
Rate of phosphorus uptake by roots.
Soil Phosphorus Reserves.
The value of soil phosphorus reserves.
Readily Available Soil Phosphorus and Fertilizer Recommendations.
Soil analysis for readily available phosphorus.
Fertilizer recommendations.
Desired readily available soil phosphorus levels.
The importance of maintaining the critical readily available soil phosphorus level.
The Efficient Use of Phosphorus Fertilizers.
Mineral Phosphorus Fertilizers.
Chemical evaluation of phosphorus fertilizers.
The principal phosphorus fertilizers used in agriculture.
Changes in phosphorus fertilizer consumption.
Phosphorus and Environmental Issues.
Phosphorus and the aquatic environment.
Phosphorus fertilizers and the terrestrial environment.
Concluding Remarks.
References and Further Reading.
References.
Further Reading.

✦ Subjects

Сельское хозяйство;Агрохимия и агропочвоведение