Issue 11 2016
Time for tea?
Polysulphate application improves tea yield and quality in Vietnam
For tea-drinkers, many of the most important conversations happen over a cup of tea. We have something you may like to share with someone at tea-time. It’s news from the hillsides of Vietnam, the fifth largest tea producer in the world, of the benefits to tea growing from polyhalite application.
Topping up tea land
Tea lands, rolling green and productive, are a fabulous landscape and a feast for the eye. But the soil may not provide all that the tea bush roots need to feed on. New and ‘hungrier’ varieties of tea introduced to boost productivity in Vietnam need more nutrients than the soil in traditional tea lands can supply.
Polyhalite, this natural marine sedimentary mineral, is a hydrated sulphate of potassium, calcium and magnesium. These alkaline elements are just the ticket for tea plants. So polyhalite, marketed as Polysulphate, was tested on the tea lands in the famous Lam Dong district of Vietnam as an additive to compound N-P-K fertilizers.
Tea plantation in Vietnam. Photo by G. Kalyan.
Sip the difference
The results are dramatic. Even though tea plants’ tips are harvested relentlessly, the power of polyhalite to improve tea bush productivity is remarkable:
  • Better density, weight and size of tea buds
  • Tea productivity up 14%
  • Quality improved
  • Increased profits to growers 
Tea for eternity
These results will surely be a topic of conversation between tea growers over many a cup of tea in Vietnam: where tea-drinking is part of every social occasion.
The tea industry in Vietnam has a 3,000 year old history. But it has to continue to evolve in order to be productive, profitable and sustainable. With this new evidence, Polysulphate is proving to be an important part of that.
In the meantime, we hope you enjoy your next cup of tea.
In this missive we’ve given you just a taste of the news from the tea plantations of Vietnam. For the full story see our Polysulphate news or download the full paper.
Tea plantations in Vietnam. Photo by Nguyen Duy Phuong.
Polysulphate will be at CropTec 2016, 29-30/11/2016 at Peterborough, UK
Find us in Hall 1, Stand 107
Contact us: [email protected]
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Mined in the UK, ICL is the first – and only - producer in the world to mine polyhalite, marketed as Polysulphate™