​Black-grass is major problem on many UK farms and it is now widely accepted that fully integrated solutions to manage the weed are fundamental to achieving any kind of success. Ultimately, most approaches are aimed at limiting seed return in order to reduce the overall population pressure.

In this blog, I discuss a number of management options that should be considered pre-harvest to reduce seed return and which should form part of an overall, long term plan to eradicate the weed.

As I write this, glancing out of the window to look at blue skies over dry soil, it's all too easy to forget the extremely wet autumn and winter we all endured. Clearly, this posed a massive challenge for establishing autumn crops and has led to one of the smallest winter wheat areas we've seen for decades. 

It did, though, also cause large amounts of mobile nutrients like nitrogen and sulphur to be leached out of the soil, meaning we started spring growth with very low levels naturally available. Indeed...

​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.

​Over the past decade, we have seen many new fungicide actives tested and have also lost many others from the store as they are revoked.​

As growers start to look closely at fungicide programs for their winter wheat crops, it is interesting to look into the yield trends generated in Frontier's 3D Thinking trials to see where the contribution to overall yield will come from during the growing season.

The 3D Thinking program has always studied fungicides, their effect on yield and how to maximise the value gained from them.

Ramularia causes leaf spot symptoms in barley. While it has typically been more of an issue in the north of the UK, it is now being reported with increasing frequency further south. The disease has historically been a bigger issue in spring barley but the economic losses in winter barley are now an increasing problem too.

The disease has a complicated life cycle and is seed, air and trash-borne. The fungus, Ramularia collo-cygni, causes ramularia and grows from infected seed. It then moves systemically within new plant growth. Airborne spores produced on trash and crop debris can also infect plants.

There are no "blue prints" when it comes to cereal fungicide strategies. In fact, all plans should be under constant review based on risk assessment, factoring in variety, drilling date, weather, geography and spraying capacity.

One legacy of the winter we are just coming out of is that crops vary significantly, both in terms of growth stage and current levels of disease. Generally, septoria pressure is low due to so many crops being drilled much later, but the disease can still be found as a result of the mild, wet winter.

Disease control this season could be more challenging than normal, given the range of crops that are in the ground. We have everything from early-September-sown crops to varieties such as Skyfall which were still being drilled in early-March. 

Variety and drilling date can have a significant impact on the speed at which a crop develops; in particular the time taken to reach BBCH 31.

​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. 

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.

The relentless wet weather is likely to mean that more growers will be growing maize this season; either for the first time, or for the first time in a long time. Maize is a crop that needs careful management and seed treatments are an important part of that management that have seen some significant changes.

Most maize growers will be aware of the challenges we now face with the loss of the active ingredient methiocarb; best known as the seed treatment Mesurol. This seed treatment has for years provided class leading bird repellence, particularly against rook damage and other corvids, to the extent that some will have forgotten quite how damaging these pests can be. 

At this point of the year, I find that New Year's resolutions tend to have gone one of three ways. They are either still going strong (well done if that's you), have merely been forgotten about, or have fallen at the wayside because although you tried, one small blip meant you had to shelve it for next year so you can try again.

While I'm often in the group who start with the best of intentions but don't quite see them through, there is one 'resolution' that I simply haven't been able to ignore: adapting to change.

This year, food production is under pressure from many different angles and regardless of your view on the validity of change, we can be certain that UK agriculture will need to adjust in order to survive and thrive

Sulphur is a key component of successful crop production; as important as nitrogen when it comes to planning nutrient applications. A multi-nutrient sulphate fertiliser range from ICL called Polysulphate is one that we've recently introduced to our range and is something I am talking about to many of the growers I advise.

Two new Polysulphate products, PKpluS and PotashpluS are especially of topical interest to the increasing number of farmers considering spring pulses on the back of dismal autumn weather. 

We've experienced a quite extraordinary start to the cropping year and as I look at news reports showing land under water I can only imagine the extent of the challenges being faced by some farmers. By now, in England, most would have hoped to finish drilling never mind not even started in some cases.

Understandably and economically getting a winter cereal crop is still the goal right up to February, depending on the variety, for those who can. However, for some that ship has already sailed and a new 'Plan B' will be the reality. For many, even those not so dramatically affected, some change of cropped area is underway with a shift towards spring crops inevitable.