Demonstrating the effect of different levels of potash fertiliser on grain yield and quality and soil fertility.

Full details of the functions, responses, uptake, removal and deficiency symptoms of potash in cereal crops. Recommended amounts and timing for different situations.

Potash and sodium needs of sugar beet together with a list of typical contents of different fertiliser materials. Recommended amounts and timing for different situations.

Requirements of potash for oilseed rape including recommendations and timing of application.

Influence of different forms and timing of potash on potato yield and quality. Recommendations for earlies, canners, maincrop and seed potato crops.

Summarises new research findings on the potash needs of beans, peas and other grain legumes which provide important new information for anyone growing these pulse crops.

Reviews the pattern of nutrient uptake and removal by arable crops and details the practical approach for optimum timing of potash application.