Budweiser barley delivers wider sustainability in Buckinghamshire

Wider sustainability is, however, the main reason they routinely grow around 200ha of Explorer on contract for the leading brewer in the diverse 1,400 ha cereal-based rotation.

Of course, it’s good to have a secure local market; especially one offering a guaranteed minimum premium for a relatively high nitrogen specification in uncertain market times. But having a spring crop that can be planted relatively late yet harvested ahead of wheat is a real boon for the three-man Estate team who also lamb 400 Mule ewes and deal with cropping spread across 50 miles of the county.

“We introduced spring barley into our rotation in 2013 to help manage black-grass,” Mr Singer explains. “Ground too strong for malting left us no option but commodity feed growing, which wasn’t ideal on our yield-limited land.

“The real problem, though, was having to harvest into September. We deliberately run only one set of kit, and wheat has to take the priority at combining. That and the distances involved meant that too much of the barley could be on the floor by the time we were able to get to it.

“It’s a completely different story with Explorer, which we started growing in 2015 shortly after the Budweiser contract was launched. The 30ha we grew initially was enough to convince us of its fit here. So, we’ve it’s been an important part of our business ever since.

“As a continental type, it develops at an unbelievable pace. We sow it in the second half of March and harvest from the end of July. Even so, we’ve been averaging almost exactly what we previously got from feed varieties – a little over 6t/ha. As we no longer grow winter barley or oilseed rape, it’s the first crop we combine.

“We’ve been staggered where the yield comes from on our difficult, thin ground. It costs us no more to grow than a feed crop. And, every crop we’ve grown has made the Budweiser spec.”

From a wider sustainability standpoint, Mr Singer and his Agrii agronomist, Steve Baker, find Explorer especially well-suited to the sort of seasons they’ve been seeing of late. The variety’s growth habit means they can hold-off on drilling until well into April, if necessary, to let the ground dry out and warm-up from a wet winter.

Being well along in its development by the end of May too, the crop avoids the grain set problems that can bedevil other spring barleys in a dry early summer. What’s more, it is hugely competitive with grassweeds.

“The crop didn’t go in until 20^th April in 2018 and it still delivered 5.5t/ha,” Mr Baker points out. “This sort of resilience really helps these days.
Chris and I haven’t found the variety any more demanding – or costly – to grow than feed barley either. Having said that, we’ve learnt a good bit about how to make the most of it over the years.

“To make sure the seed goes into the sort of conditions that support its rapid growth and development, we don’t drill before the middle of March. We’ve sown at 350–75 seeds/m² and used up to 140kg N/ha in the past, but where crops are going in behind two-year AB15 stewardship legume mixes, in particular, we’re looking to cut back on the nitrogen while upping the sowing rate to 400 seeds. This should keep yields up and nitrogen comfortably within spec.

“We typically apply half the nitrogen along with a balance of fresh available phosphate, potash and sulphur as Agrii-Start NPK with the seed down the Horsch Avatar spout, and the rest as soon as we can see the tramlines. With phosphate lock-up a particular problem on much of the ground, the phosphate protection provided by the specialist fertiliser’s P-Reserve coating is essential.”

Having progressively reduced cultivations over the past five years, the Carington Estate team either direct drilled their Explorer into previously-glyphosated winter covers or following a shallow Terrano pass. To deal with resistant wild oats Avadex (triallate) granules are the ‘go-to’ pre-em, with a sulfonylurea/fluroxypyr mix for broad-leaved weeds alongside the T1 fungicide.

“Ahead of our prothioconazole-based T1 and the crop’s main PGR, we always apply Adjust – along with manganese – at GS12 or GS13 to manipulate root and shoot growth for the strongest base on which to build,” notes Mr Baker. “We’ve found early growth regulation makes all the difference with something that goes through its growth stages as fast as Explorer.”

Carington Estate farm manager, Chris Singer.

“Soil pHs of nearly 5.0 at one extreme and up to 8.0 at the other mean we include trace elements with every spray to counter availability problems,” Mr Singer adds. “These are vital to maintain the best balance of nutrition throughout the season across land so spread out that we have to make the most of the sprayer at every visit.

“Another thing we’ve learned with Explorer and the logistics of our business is the importance of combining our crops as soon as they’re ready. Having them all together right at the start of our harvest ensures the combine is in just the right place to go without any delay.”

Although Explorer-growing has proved valuable in smothering black-grass on the Estate’s heavier northern land, for logistics reasons – more than anything else – it is currently largely concentrated on the thinner southern ground. This has meant it has been grown for more than four consecutive seasons on some fields.

To maximise the sustainability of this approach, the team have been ‘playing around’ with different winter cover crops in recent years; the early harvest giving a good window for the most-timely autumn establishment.

“Cover cropping plays a valuable role in our effort to put much more into the land we’ve taken back in-hand, in particular,” stresses Mr Singer. “The maize and short-term leys we now have in our rotation in an arrangement with a neighbouring dairy unit work well for our soil improvement efforts too, as does the straw-for muck swap we have alongside this.

“The liquid digestate we take also helps, although the supply is more variable than we’d like.  Looking ahead, we’re keen to try applying this to growing crops in the spring as well as under-sowing winter cereals with clover to provide continuous cover in the arable rotation.

“Explorer continues to be the mainstay of our spring cropping alongside 120ha of spring wheat grown on a seed contract and 60ha of maize for silage,” he says. “It does us well, competing strongly with second wheats in its margins and giving the workload spread so essential to our regime.”

Explorer contracts will be available for 2022 – growers in relevant counties can register their interest at www.agrii.co.uk/explorer. Please get in touch with Agrii or Viterra UK Ltd for more information about geographic suitability.