At SOYL, we have been running an extensive precision farming research and development programme for nearly 30 years. The work is central to the value of our technology and services, and today we now possess one of the largest trial databases in the world. A significant part of this work involves trials to compare our variable rate application approach against flat rate applications.

It's one of the first questions we face from growers when discussing variable rate nitrogen (VRN) and it's understandable given sulphur is one of the major nutrients required by plants. If optimum amounts aren't available, it will have a direct impact on end yield.

As it happens, in nearly all of these conversations our recommendation to growers is to apply sulphur variably alongside their nitrogen in order to achieve optimum yields and quality. Of course, as with all nutritional decisions, some forward planning is required.

With this in mind, we're going to address some common questions to help you plan for the spring and ensure you get the maximum benefits from variably applying sulphur.

How we design and manage profitable, efficient crop rotations can be influenced by the use and management of available cover crop positions within them. When incorporated well, they can lead to the introduction of wider sustainable crop establishment systems, having the potential to gradually reduce some crop inputs and the overall cost of crop establishment.

If you have a good cover crop that has been successfully absorbing available nutrients, improving soil structure and supporting soil biota, you may be wondering what to do. First and foremost, careful thought and consideration is required when planning your next move. 

With 2021 now underway, we are officially at the beginning of the end of the Basic Payment Scheme (BPS) era. The transition to the Environmental Land Management (ELM) scheme has started, and we're sure that many of you are wondering what this move is going to entail.

I'll admit that at first sight filling your tractor with oil and planning your nitrogen applications don't appear to have much in common but in one simple way they are very similar. Before you do both, you need to know how much you've already got in the tank or in the soil, so you know exactly how much more you need to put in.

When it comes to nitrogen applications, rates should only be decided once you have fully assessed the requirements of your crops. As well as thinking about inputs, this also means making an informed judgement on how much nitrogen will be supplied by your soils.

The nitrogen inputs to your crops can be one of the most important factors that influence crop output and, ultimately, the profitability of your business. There is a wealth of tools and information to help guide you when it comes to applying the optimum rate of nitrogen, but how do you know if you are actually getting it right and making the best use of these applications to maximise your financial return?

As a result of the dreadful winter weather, many headlands, fields and even blocks of land were unfortunately not fit enough for spring combinable crop planting. Growers were therefore faced with two options: leave the area bare and unplanted, or plant an economical green cover crop to harvest sunlight and convert that energy into valuable biomass for the soil.

Many growers opted for the latter and, as you look around the countryside there is now a wealth of summer fallow crops on display, with the likes of sunflowers and oil radish putting on quite the show.

There are many reasons to sow new grass leys, but none more prominent than having some in poor condition following the wettest winter on record and one of the hardest spring droughts.

The recent rainfall will help things but it cannot reverse the damage that's already been done. Unfortunately, many leys have lost key elements, allowing weed grasses such as annual meadow grass, rough stalked meadow grass and couch grass to populate the thinner areas. 

We've certainly seen Mother Nature go from one extreme to the next in recent months. Given the incredibly dry April and May experienced this spring, it is difficult to comprehend that February was actually the wettest on record. Let us not forget that this also followed the consistently above-average rainfall throughout autumn and winter too.

However, a generally kind March and early April allowed for some substantial spring cropping. While somewhat of a forced change for many, this - coupled with the extremes in weather - has significantly impacted the nutrition requirements for this and potentially next year's crops.

Potatoes are not unique in this respect, but virtually all of their macro-nutrients applications are made before the crop is planted and well before the peak uptake of nutrients that happens 60-75 days after emergence. This, coupled with the plant's naturally poor inherent ability for rooting, means that efficient uptake of nutrients is always challenging.

​In our last two carbon management blogs, we've been talking about the role agriculture plays in annual carbon emissions and the ways in which growers can reduce their environmental impact through natural capital management. 

Now, while many farmers are choosing to take progressive steps towards carbon management, the law also obligates conventional farmers with over 15 acres of land to create Ecological Focus Areas (EFAs)...

This is part two in our carbon management blog series. To read part one, click here.

Farmers are in a unique position of having great power to implement carbon sequestration measures. Carbon sequestration is the technical term for carbon capture. Carbon can be captured in the oceans, in natural rock formations, and in the earth. As an industry that deals heavily in soil management, agriculture is in a unique position for optimising on carbon sequestration opportunities.

Carbon farming is a 21^st-century buzzword and the pressure is on for modern farmers to take account of their carbon footprint. However, this drive to 'go green' can seem at odds with the commercial objectives of a profitable farm.

Yet, none of us can escape the inevitable changes ahead. The government has committed to the goal of a carbon-neutral UK by 2050. This is an increase from the 80% reduction in greenhouse gases that was agreed to in the Climate Change Act of 2008.

​The recent dry weather has been incredibly welcome and has finally allowed drills, sprayers and fertiliser spreaders to roll across the country. But, dare I ask, how long will it be before we're looking for some fresh rain?!

There is clearly a massive variation in growth stage and condition of the autumn crops across the country, but the more forward crops have started to get hold of applied nitrogen and actually look quite good .At the other extreme, some of the most backward crops are not that far ahead of the spring cereals that are now going in the ground. As long as reasonable seedbeds can be achieved and drilling doesn't get delayed, the potential for these spring crops should be good. 

​Although the sun is out (as I write this anyway) I recognise that many areas of land are still plenty wet enough, and getting jobs done is tricky enough without getting covered in mud as soon as you hit a waterlogged bit of ground. That said, the upside is that many growers will be reviewing cropping plans on almost a weekly basis to ensure they are reflective of current conditions. 

With potentially 50% of the UK winter wheat crop sown there remains, subject to your area, a significant proportion of land yet to be planted. Spring crop opportunities remain unpredictable so, if some bare land is looking a likely scenario for the farm on which you work, you may want to think about the opportunities associated with it.

I'm sure farmers across the UK breathed a collective sigh of relief yesterday, as it was confirmed by the Chancellor of the Exchequer that the tax break on red diesel would remain in place for the agricultural industry.

Over the past week, farmers have been steeling themselves for a potential 50% rise in fuel costs following reports that the tax relief was going to be scrapped altogether as part of the 2020 Budget. While the news is a positive outcome for the industry the Chancellor has, however, announced that other sectors will be stripped of the tax exemption in two years' time. 

If you were to ask an agronomist the question, "When should I drill my spring barley?" the most likely answer would be, "In the spring".

While completely correct, the spring covers a fairly significant period in the first quarter of the year and within that time frame, depending on when you decide to take action, you can experience some very different outcomes. With that in mind, it's important to really dissect the spring drilling window to get a better understanding of the potential results we're dealing with. 

Well, it won't be surprising to learn that many soils will have lost nitrogen via leaching.

To demonstrate the impact, AHDB has produced a map to show the winter rainfall classification. This forms part of the RB209 book method for producing a Soil Nitrogen Supply (SNS) index and is a good starting point as you begin to look at your nitrogen programme for this spring. 

However, rather than rely solely on this information, our team at Frontier decided to carry out the measurement of Soil Mineral Nitrogen (kg N/ha) at a number of nationwide trial sites. The findings are outlined in the below table.

Over recent weeks, from growers to advisors, we have all been doing our very best when it comes to taking an optimistic view when it comes to crossing our fingers for improving weather conditions. Each break in the rain was seen as a chink of light in what has been otherwise a torrid autumn when it comes to harvesting and planting progress.

All said and done it is clear now what we are faced with - crops of maize, beet and potatoes still in the ground; farmland flooded or at best waterlogged and a significant area of land previously allocated to autumn sown crops still unplanted.