PDA logo

Potash Development Association

Show menu

Potash News

The Potash Development Association publishes both technical Potash News items and shorter Blog items. Potash News provides the latest up to date information on Potash and its use, while blog items are shorter and more timely.

If you are in the UK or Ireland and are interested in receiving Potash News items through the post free of charge, then sign up on the contact page. Recipients of the Potash News can receive CPD points for BASIS, NRoSO, and Dairy Pro.

To bale or not to bale…

July 2019

With harvest having started in several counties across the country, decisions will be being made whether to bale straw or chop and incorporate back into the soil. Many winter barley crops that have not suffered from the dry conditions up to June generally have a large amount of straw. Last year there was quite a […]

Potash for maize

June 2019

Following the recent heavy rainfall, some spring sown crops will have quickly gone from a state of moisture stress to waterlogging, not ideal in the early stages of production! Some of the later sown spring crops, such as maize have been slow to get going due to the dry soil conditions. The rainfall will help […]

Potash and sulphur for silage yield and quality

May 2019

Unlike nitrogen and sulphur, potash moves very slowly in the soil. Failure to replenish the potash removed by grass cut for silage can lead to short-term yield penalties. The advice to keep soil potassium levels at Index 2- will maintain a fertile and productive soil throughout the horizon where roots can access nutrients. Fresh potash, […]

Potassium and drought tolerance

April 2019

It can be a bit of a gamble to put together an article which focusses heavily on current weather conditions, particularly when thinking back to April 2012, when farms with access to irrigation equipment were considering applications to cereals. We all know what happened next… However, it cannot be ignored that large parts of the […]

Potash for grassland

March 2019

Potash is used to regulate the movement and storage of solutions throughout plants which can be compared to the blood system in animals or humans. This is a very wide ranging and vital role, affecting nutrient uptake, photosynthesis, rate of growth and feed value of forage. These functions require larger amounts of potash in total […]

Consider nutrient removals more closely this season

July 2018

The implications of plant potash levels on drought stress are often discussed during the spring due to the role potash plays in enabling efficient water usage in plants and improving crop tolerance to drought. Drought conditions are not only related to potassium levels in the plant but may also have an impact on nutrient levels […]

Time to reflect on last year’s yield and nutritional program

January 2018

Winter is a good time for many to reflect back on last year’s yields and nutritional programs to identify areas of change that may need correcting going forward. Where applications of phosphate and potash were made based on estimated yields and assumptions on straw management, actual offtakes could be very different, which unless corrected could […]

Change of PDA staff

November 2017

Our Coordinator, Peter Hoey, is leaving PDA and we are delighted to say that Ian Matts is taking over from December 1st. Ian is well known in the nutrient industry having done over 10 years with Yara Fertilisers, lastly as Technical Manager for UK and Ireland. He is now an independent agronomist/consultant, and also the […]

Grass yields: measure to manage

November 2017

To misquote a saying slightly “if you don’t measure it, you can’t manage it”, this is very important for grassland where production is so often not measured directly because grass is grown to feed livestock, rather than sell directly as a product. As a result of not measuring, the benefits of certain grassland management decisions […]

Review of potassium as a nutrient (IFS)

September 2017

At their 2016 agronomic conference the International Fertiliser Society (IFS) hosted a comprehensive and detailed review of potassium management in soils and crops by Johnny Johnston, of Rothamsted Research. Containing a host of data from long term trials run by Rothamsted, this is an excellent reference guide for advisers. You can read the abstract of […]

P & K for wholecrop cereals

August 2017

With the arrival of the new Nutrient Management Guide (RB209) from AHDB, the Wholecrop Cereal recommendations for Phosphate and Potash have been included. In the past, in the absence of good information on Wholecrop generally, advisers have often used “grass for silage” recommendations instead, reflecting the greener nature of under-ripe cereals cut for Wholecrop silage. […]

Maize and rye for AD plants

August 2017

With the huge increase in area producing forage maize and rye for anaerobic digesters, it seems timely to remember a couple of the nutrient issues that arise which can be different from normal growing practice. Firstly, harvesting often occurs earlier with the crop being greener than for normal animal feed purposes. The implication being that […]