NPK Fertilisers


Enhance the nutritious value of your soil with our highly effective NPK fertilisers.

What are NPK Fertilisers?

Nitrogen (N), phosphorus (P), and potassium (K) are among the three most vital nutrients that plants need to grow well. Though the soil already has some of these nutrients, they are not always necessarily in the proper ratio. NPK fertilisers help you maintain the right balance of these three essential nutrients in the soil and ensure that your plants stay healthy and grow well.

Compared to natural organic fertilisers, NPK fertilisers act rapidly and contain precisely the right amount of nutrients for a plant to grow well. However, following the instructions on the packaging to understand what quantities are needed, how often they should be used, and whether they need to be worked into the soil or not is critical once you've found the right fertiliser.

Things You Should Know About the NPK Content In the Soil

Your crops require a sufficient amount of macro and micronutrients in the root zone for optimal growth. While most of these nutrients are in the soil itself, others should be added through NPK fertilisers. Since different soils will contain varying amounts of nutrients, you should determine the NPK content of your soil and then figure out the amount of Nitrogen, Phosphorus, or Potassium you need to add to maximise your yield. Other factors that necessitate this process include previous crops, past use of manure, climatic conditions, and plant residue management. 

Understanding NPK Values

All plants do not have the exact nutritional needs – some need more Nitrogen than Phosphorus and so forth. This is why you must understand NPK values, which indicate the fertiliser’s composition. For example, an NPK fertiliser labelled 10-5-4 contains 10 per cent Nitrogen, 5 per cent Phosphorus, and 4 per cent Potassium. This ratio matters because it helps you determine the amount of fertiliser to feed your plants and how frequently.

When to use high nitrogen fertilisers?

Plants that need higher nitrogen (N) ratios include leafy vegetables such as cabbages and spinach. Stunted growth, weak stems, and yellowed or discoloured leaves are all signs of a nitrogen deficiency that necessitate using fertilisers for proper growth. 

When to use high phosphorus fertilisers?

Young plants that are developing their root systems tend to require higher phosphorus (P) ratios, plus root vegetables such as carrots, turnips, and beetroots. Plants that are not getting enough phosphorus will be stunted and may have purple tinged leaves and a lower fruit yield.

When to use high potassium fertilisers?

Any plant that yields fruit or vegetables will need higher potassium (K) ratios, as this nutrient is vital for building starches and sugars. Those that do not take in enough of these elements may have visibly scorched leaves, deliver a poor fruit yield, and have a relatively low resistance to disease.

Get NPK Fertilisers at Dejex

At Dejex Supplies, we are dedicated to supplying you with high-quality NPK fertilisers in the amounts necessary to improve your crop growth and yield. We are the leading commercial and horticulture suppliers in the UK and have a good understanding of products and their applications.

So whether you are a grower or a gardener who needs fertiliser for your fruit plant or your lawn, we have the right one that fits your needs. We have years of industry experience and are familiar with the challenges of growing healthy crops. 

As a result, we have unparalleled knowledge of the local horticulture business, which allows us to better understand our customers’ needs, ensuring that goods are delivered on time and organising deliveries with growers to fit their schedules.

Calculate your NPK needs and order your batch today!