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Potash Development Association

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Potash Leaflets

The PDA produces a range of leaflets relating to potash and its use. These clear and informative publications can be viewed on-line and downloaded as PDF files. If you would to receive a copy of a leaflet then contact us and let us know your details and the leaflet you are interested in.

8. Principles of Potash use

October 2006

Reviews the principles of potash manuring. Provides target levels for soil fertility, standard offtake figures for UK crops and guidelines on how to calculate potash recommendations.

20. Biosolids and the need for Potash

June 2007

Biosolids (sewage sludges) provide useful contributions of nitrogen and phosphate but virtually no potash. Typical contents of biosolids are given together with recommendations for balancing K requirements.

23. Potash for organic growers

August 2008

Explains the principles of manuring for organic and conventional systems and the regulations affecting the use of different potash products.

24. Soil analysis: key to nutrient management planning

November 2011

Comprehensive guide to soil sampling and interpretation of soil results including indispensable reference material not found in any other single source.

25. What you should know about fertilisers

July 2016

Provides a layman’s description of plant foods and explains the natural origins of potash and justification for its use as a fertiliser in simplistic terms.

28. Why maintain soil potash reserves?

May 2007

A review of the factors underlying the importance of adequate reserves of potash in the soil, and the costs of deficiency.

29. Potash and the Environment

March 2006

The use of potash does not have an environmental downside, but lack of K can reduce efficient plant uptake of N and P. This leaflet looks at the issues including cross-compliance and good practice.

Nutrients in crop material

May 2017

Phosphate and Potash removal by crops.

Organic Materials

May 2017

Animal manures and other sources of Phosphate, Potassium, Magnesium and Sulphur.

Potassium – a Nutrient Essential for Life

June 2012

Potassium is one of the key elements for life on earth. It is required in large quantities by all plants and animals and is obtained by plants from the soil in which they grow.

Understanding potassium and its use in agriculture

June 2003

The book provides vital and clear reference material on the role of potassium in plants, animals and humans, its origins in nature, its uses to mankind, its importance and correct use in agriculture, its movement in air, water and soil, and its place in manures and fertilisers.