Give your seeds a packed lunch full of nitrogen. Everybody needs good nutrition to grow. Grass seeds are no exception. That’s why we send our ProNitro® coated seeds into the world with a packed lunch full of nitrogen that will fuel germination and growth. With ProNitro® you give your seeds a head start. The seed coating combines slow and fast-release nitrogen and there is no need for fertiliser during the first month because all the nitrogen your grass needs for early establishment comes ready-wrapped around the seed.

Improved emergence and density

The fast and strong start of ProNitro seeds gives long term benefits. We know because we have tested – again and again. Every time results show improved emergence and grass density. And forage yields can be anything from 5% to 20% higher already in the first year.

Here is why ProNitro gives better results:

  • The green ProNitro® coating reduces losses through bird picking
  • Bigger and heavier seeds ensure a better contact with the soil surface
  • Feeds the seeds, not the weeds. Fertilizer goes directly to place it is needed, so grass roots are able to use nutrients more efficiently.
  • Fast emergence means that plants grow stronger in their early stage, have 30% longer roots, and improved stress-tolerance. The result is an average of 30% more plants.
Germination of seeds with and without ProNitro

Save time and boost milk yields

The unique combination of fast and slow-release of nitrogen means that blades of grass emerge stronger and more densely. Because the nitrogen is carefully wrapped around each seed in an easily accessible format, the fast germinating grass seed can tap into it straight away. This way you give your field a head start that leads to increased forage and milk yields.

Sowing with ProNitro is also time-saving. ProNitro® combines seeding and fertilizing in a single step.

Keep your output high with overseeding

With its fast establishment and fertilizer coating ProNitro® is very suitable for overseeding. Even on the best-managed grassland, output declines year by year as weed species take hold. In the second year, for example, it is not unusual to see a drop in yield of 10% to 15%. The forage quality also declines because the nutritional value of weed species is lower than that of specially developed pasture species.

The best solution is to reseed with a new ley, but that is not always possible nor desirable. If so, overseeding with an appropriate mixture, such as GrassMax, is a relatively low-cost way to revitalise your sward.

Do you already know our Pronitro?

Buying treated seeds is a sound investment

The use of treated seed is common farming practice for the sowing of cereals, beet, and maize. With ProNitro® you can apply the same approach to grass, especially in locations where there are restrictions on the use of chemicals and fertilizers.

At DLF we're constantly pushing performance boundaries with new varieties of grass seed offering improved characteristics. Our seed treatments support the expression of all the genetic traits we develop from plant breeding.  The extra cost of sowing with treated seeds is a sound investment. As sowing conditions vary from farm to farm and from year to year, treated seed has a much better chance of thriving under adverse conditions.

Trials with ProNitro® treated seeds

UK, Lincolnshire, Scarborough

Soil type: organic matter content >7%.

Seed mixture: 50/50 diploid and tetraploid perennial ryegrass

Sowing date: 9 September 2014

We examined the trial field three times until 28 October. On all three occasions the ProNitro® strips were a darker green than the control strips. Four weeks after sowing, the ProNitro® density was scored as 4,6 compared to a control density of just 4,2.


The Netherlands, Landhorst

Seed mixture: 50/50 diploid and tetraploid perennial ryegrass

Sowing date: 18 October 2014

Two weeks after sowing, ProNitro® seedlings were taller and darker than the control. The effect was visible all the way through till the final field assessment undertaken five weeks after sowing.

The following spring the height of the ProNitro® plants was more uniform than the control. The denser sward also suppressed Poa annua infestation, measured in May 2015 at just 5% in the ProNitro® strips compared to 10% in the control.

Find the perfect mixture

High milk or meat yields are essential for running a profitable farm. The key to this is to keep your herds well fed with home-grown forage. With best in class ForageMax mixtures you increase the nutritional value of your forage and silage.

Explore the range

HF Seeds has been at the forefront of seed breeding technology for over 60 years. This long and successful pedigree has grown over the years as generations of farming families come to trust the HF Seeds brand as the foremost range of grass mixtures that are available.

Explore the range

We're not just about grass at DLF. We supply a range of other feed and commercial crops that support farm profitability. Your Countryside is our diverse range of species and choice of specialist mixtures, bringing Game Cover, Environmental Stewardship, Root Crops and Cover Crops, together in one comprehensive catalogue.

Explore the range

Contact the forage team

Agricultural & Specialist Seeds Team:

Telephone: 01506 894820