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Home Food & Agriculture

Kent growers assess two new Group 2 winter wheats

Involve Africa by Involve Africa
June 29, 2022
in Food & Agriculture
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Kent growers assess two new Group 2 winter wheats
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Two new Group 2 milling winter wheat varieties are being grown on one Kent farm, with both Mayflower and Palladium looking good ahead of harvest, and Mayfield so far a little cheaper to grow.

Edward Batchelor and his sons, Andrew and Ryan, focus on milling wheats and are growing the two varieties on seed contracts. They will be assessing yield, and grain quality at harvest to see if they will be drilling them commercially next season.

Mayflower is a slightly taller variety than Palladium, and appears to have more green leaves. Both looked clean of disease just ahead of harvest in their area of north-east Kent, which can see yellow and brown rust quickly hit wheat crops.

See also: Advice on choosing winter wheat varieties to reduce fungicide spend

“Both look good at the moment and both appear like good varieties, so we are likely to grow both again next season. We saw Mayflower in trials and, looking at the untreated fungicide plots, you would have thought it had been treated with a fungicide,” says Andrew.

Farm facts

J Batchelor & Partners, Ford Manor Farm, Hoath, Canterbury

  • Farms 600ha of largely arable land
  • Crops Winter wheat, winter barley, winter bean and oilseed rape

Disease resistance

He was impressed by the variety’s disease resistance characteristics in trials last season and, with many Group 1 milling wheat varieties under pressure from diseases – Skyfall and Zyatt are susceptible to yellow rust and Crusoe to brown rust – the farm decided to grow a seed crop of Mayflower for agronomy and grain trading group Frontier.

The family farm has 40ha of Mayflower in the ground on their 600ha of largely arable land at Ford Manor Farm, north-east of Canterbury.

They grow 300ha of winter wheat – largely Skyfall, Illustrious, Extase and Firefly – alongside winter barley, winter beans and oilseed rape.

The farm has grown Group 2 wheats such as Siskin and Cordiale in the past, with Extase currently grown. The family choose a range of Group 1, 2 and 3 wheat varieties to spread the risk, says Edward.

Mayflower and Palladium were new additions to the current AHDB Recommended List last December, joining Extase and Siskin as Group 2s.

Among the Group 2s, Extase has become the benchmark variety for its high yield and good septoria and rust resistance, but Edward says Mayflower’s untreated fungicide plots looked even cleaner than Extase, so they were keen to try the variety.

Brown rust

Untreated patch of Mayflower © MAG/David Jones

Drilling time

The 40ha of Mayflower was drilled in the second week of October, along with 35ha of Palladium, and both grew away at similar rates. However, the Mayflower developed into a taller and leafier wheat with a dense green canopy, perhaps 50-75mm taller than Palladium.

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As seed crops, nitrogen fertiliser was applied at a relatively modest 220kg/ha, compared with Skyfall and Illustrious commercial crops at 260-270kg/ha and Extase at 280-300kg/ha, when aiming to achieve 13% protein.

Both Mayflower and Palladium will be tested after harvest to check grain protein levels.

Traditionally, millers look for a protein content of 11.3-11.5% for Group 2 wheats, but some have paid the full milling premium for varieties such as Extase that meet the 13% criteria.

Spray programme

At the early spring T0 fungicide stage, Palladium had an azole mix of tebuconazole and prochloraz plus a plant growth regulator, while Mayflower – like Extase – just had a plant growth regulator due to its slightly better disease resistance ratings, so there was a small saving.

The T1 treatment was common across the two varieties, consisting of SDHI benzovindiflupyr plus azoles prothioconazole and tebuconazole.

For T2, the planned Univoq had to be quickly cancelled after reports of sprayer damage from the fungicide, and a less expensive prothioconazole-tebuconazole-folpet mix was used instead due to dry conditions. Both had a T3 azole ear spray of  prothioconazole and tebuconazole, as did the Extase.

Mayflower shows the second-highest septoria resistance on the AHDB Recommended List, with a one-year resistance score of 8.2, after Theodore’s 9 and ahead of Palladium on 7.2 and Extase on 7.3.

This is on an AHDB 1-9 scale where 9 shows good resistance and 1 is very susceptible.

Both Mayflower and Palladium score 9s for yellow rust resistance, while Mayflower has a 6 for brown rust, slightly above Palladium’s 5.

Mayflower wheat crop

The Mayflower wheat crop © MAG/David Jones

Nitrogen efficiency 

Paul Taylor, head of agriculture at seed group Elsoms, which bred Mayflower, says the variety appears to take up more nitrogen fertiliser and capture it early in the season, and then use the nitrogen more efficiently.

When applying 85kg/ha early in the season, it performs well and goes through its growth stage quickly, he adds.

“The variety seems to have greater nitrogen efficiency compared with other wheat varieties we have seen in our trials,” he says.

Mr Taylor adds that the variety has performed particularly well in breadmaking trials, and the breeder is hoping to get the variety upgraded to a Group 1 milling wheat.

Market shares

Chris Piggott, Frontier’s regional seed manager for southern and central England, says both varieties look good agronomically and have good resistance to septoria and yellow rust.

With Group 1 specialist milling winter wheat varieties’ share of the market slipping below 20%, the Group 2 varieties may see increased interest from the millers.

Mr Piggott adds that Mayflower has “fantastic” disease resistance, and it is good to see diversity in its parentage compared with a lot of other wheat varieties on the AHDB Recommended List. The variety also has a particularly good specific weight, similar to Extase, at 78.5kg/hl.

He concludes that between the two, Mayflower may have the edge on specific weight, while Palladium leads on straw stiffness, but both look like good varieties overall.

Palladium’s breeder, KWS, says there will be enough seed available to take 3% of the seed market this autumn, while there is likely to be less Mayflower seed  available for drilling.

Group 2 winter wheats on the AHDB Recommended List

Varieties    Extase    Palladium   Siskin   Mayflower
Fungicide-treated yield (%)      101      100      98        97
Untreated yield (%)      93        90      83        90
Protein (% milling spec)      12.7     (13.1)      12.7      (12.9)
Straw strength (without plant growth regulator)       7         7       6        6
Specific weight (kg/hl)        78.5      76.9     76.7       78.5
DISEASE RESISTANCE
Septoria (one-year)          7.3        7.2       6.5           8.2
Yellow rust          8     9     9       9
Brown rust          7     5     5       6
  • On the 1-9 scales, a high figures indicate that a variety show the character for a high degree.
  • ( ) – Limited data



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