Insights
Videos
POLY4 — research and development
POLY4 — a game-changing product
POLY4 — supporting US farmers
POLY4 – a game-changing product
The POLY4 cornerstones
Sirius Minerals’ research and development programme
About polyhalite
POLY4 explained
Sirius Minerals polyhalite project development
Posters
Soybean response to POLY4 as a potassium and sulphur source in northern São Paulo state, Brazil - Baltimore, USA, November 2018
Effect of POLY4 on growth and yield of potato in soils of western plain zone of Uttar Pradesh, India - Baltimore, USA, November 2018
Performance of POLY4 as a multi-nutrient fertilizer for wheat in Poland and European cereals - Baltimore, USA, November 2018
Performance of POLY4 blends compared to MOP blends for rice in different agro-ecological zones of Tanzania - Baltimore, USA, November 2018
Improving fertilizer use efficiency with POLY4 – presented at 21st World Congress of Soil Science – Rio de Janeiro, Brazil, August 2018
POLY4 nutrient movement in soil – presented at 21st World Congress of Soil Science – Rio de Janeiro, Brazil, August 2018
Impact of POLY4 application on soil sodium – presented at 21st World Congress of Soil Science – Rio de Janeiro, Brazil, August 2018
Published at Africa Fertilizer event – Addis Ababa, February 2018
Published at the Fertilizer Added Value event – Madrid 2018
Published at the Fertilizer Latino Americano event – São Paulo 2018
Evaluation of polyhalite for its nutrient availability and accumulation in rice, sesame and peanut
POLY4 as a fertilizer for cotton in Virginia, USA
Effect of POLY4 on soil environments
Potato yield and dry matter response to different sources of potassium fertilizer in the UK
Response of tobacco to new fertilizer blends containing polyhalite in comparison to conventional blends in Tanzania
Response of wheat to polyhalite in Jiangsu, China
Published at the NPK Fertilizers event – Vietnam 2017
Presentations
Availability of K & POLY4's significance for soybean product - ASA, November 2018
POLY4 on rice in China - ASA, November 2018
POLY4 global performance - ASA, November 2018
Brackling of a barley crop fertilized with POLY4 -ASA, November 2018
Meeting the growing demand for multi nutrients in Europe, Argus fertiliser — October 2018
The best nutrient management practices with the help of POLY4, Argus Europe Fertilizer — October 2018
POLY4: a new potassium and magnesium fertilizer – 17th World Fertilizer Congress, Shenyang, China – September 2018
POLY4 as a sulphur source for fresh market tomato production in Brazil – American Society for Horticultural Science annual conference – August, 2018
The added value of balanced fertilization with POLY4 – Added Value Fertilizers, Europe – February, 2018
The added value of balanced fertilization with POLY4 – Added Value Fertilizers, Europe – February, 2018
Improving NPKs through a simple multi-nutrient NPK feedstock, Fertilizer Latino Americano, Brazil – January 2018
The added value of balanced fertilization with POLY4, European Mineral Fertilizer Summit, Netherlands - December 2017
We're about POLY4, IFA Crossroads Asia-Pacific Conference, Singapore - October 2017
Characteristic features of POLY4 as a multi-nutrient fertilizer, ASA Conference, Florida - October 2017
Effect of polyhalite and MOP as K sources on the yield and nutrient uptake of maize in Sichuan, China, ASA Conference, Florida
POLY4 - a multi-nutrient fertilizer, Fertilizer Association of India Annual Summit - December 2017
Publications
Response of tomato to POLY4 as a multi-nutrient fertilizer in southeast Brazil, Journal of Plant Nutrition – September 2018
Potato response to polyhalite as a K source fertilizer in Brazil: yield and quality, HortScience – March 2018
Evaluation of polyhalite in comparison to muriate of potash for corn grain yield in the Southern Highlands of Tanzania, International Scholars Journals – March 2017
