Issue 1 2021
Taking total trial results to new high
What makes decision-making easier? These days, most of us are faced with a myriad of choices when it comes to choosing a brand, a business practice or even a behavior. Choosing a fertilizer strategy is no different. It’s up to all of us to help with focused explanation and evidence together with farmer-friendly facts.

Aiding decision-making

In choosing crop nutrition there are many options, configurations and costs to consider. So, it’s good that help is at hand. You already know we invest much time and effort in sourcing evidence of precise crop nutrition in action, and presenting it simply, so that all the benefits of choosing Polysulphate are clear and more likely to result in the decision to choose and use it. But you may not know that a whole flurry of experimental results – from Malaysia, Italy, Brazil, Indonesia and Israel – have just arrived in the Polysulphate experiments library.
This field trial in West Java, Indonesia showed the benefits to paddy rice crop of Polysulphate fertilizer compared to the farmer’s usual fertilizer practice. Polysulphate increased by 9% the grain weight as compared to the control (famer's practice).
Comparative studies

All plants need balanced nutrition. So do all crops. But we can’t just tell farmers and growers “all crops will be better off with Polysulphate”. We have to show how much better off their crops – and their profits – will be. So, it’s good news that we have sourced and collated even more evidence, this time from watermelons, alfalfa, lettuce, potatoes and rice. This will, of course, be of particular interest to producers of those crops but other growers will find the findings of interest.

Basket of benefits

Yield increases of up to 33% (in melons) will capture attention. But it’s the other benefits from using Polysulphate, such as the reduction in the proportion of crop infected with disease-causing bacteria (in potatoes), which is bound to catch farmers’ attention as well. If you are interested to find out more, browse and share all these results with tomato, watermelon, lettuce, potato, rice and alfalfa.
Polysulphate trial to evaluate the effect on the yield and quality of alfalfa in Northern Italy. Polysulphate application at 300 kg/ha increased the protein percentage by 9.1% as compared to the control. Letters above bars indicate significant differences at p<0.05.
Trial sheets total new high

We’re grateful to our agronomy teams all over the world who, with these news additions, have pushed the total number of trial sheets on benefits of Polysulphate to 78, measured in 20 countries and 40 crops. In the trial summaries you will find a whole raft of reasons to refine a crop fertilizer strategy and decide to include Polysulphate for a change, literally!
Plants with Polysulphate remained green, healthy, and properly functioning while magnesium deficiency symptoms appeared in tomato leaves in the control treatment. Photo taken at a Polysulphate trial in greenhouse tomatoes produced with desalinated irrigation water in Israel.
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Mined in the UK, ICL is the first – and only - producer in the world to mine polyhalite, marketed as Polysulphate