HUTCHINSONS~FieldWise(October2018) (1) - Page 5



Oilseed Rape
Winter oilseed rape yields were slightly lower this year than
the four-year average. The response to fungicides and
plant growth regulators was slightly lower than the four-year
average. The performance against yield potential was lower
this year, probably as a result of the dry weather.
Treated Yield
t/ha
Untreated
Yield t/ha
Yield Response
t/ha
Theoretical Yield
Potential t/ha
% of Yield
Potential
2018
4.12
3.70
0.42
9
45.78
2017
4.93
4.18
0.75
9
54.78
2016
3.95
3.53
0.42
9
43.89
2015
5.25
4.69
0.56
9
58.33
Average
4.56
4.03
0.54
9
50.69
YEAR
Winter Barley
Winter Barley yields in 2018 were higher than the previous
two years and close to the theoretical yield potential 11t/
ha. Disease and plant growth regulator responses were
close to the three-year average. Lodging was a problem at
some of the sites this year, which is unusual given the dry
weather. There were high responses to fungicide at some of
the sites where Ramularia was a particular problem.
All sites Winter Barley yields Harvest years 2016 to 2018
There was a considerable range of yields at the four oilseed
rape sites. Harleston had the highest yield 4.64t/ha and
Ponton the lowest 3.27t/ha with a difference between the
two sites of 1.37t/ha.
Oilseed Rape Varieties Mean of 4 Sites 2017/18
Yield variability at each site
6.00
Treated Yield
t/ha
Untreated
Yield t/ha
Yield Response
t/ha
Theoretical Yield
Potential t/ha
% of Yield
Potential
5.00
2018
9.0
7.7
1.3
11
81.8
4.00
2017
8.7
7.0
1.7
11
78.8
3.00
2016
8.2
7.2
1.4
11
74.1
2.00
Average
8.6
7.3
1.4
11
78.2
1.00
YEAR
The average yield was similar comparing the four winter barley
sites, with Morton on Swale having the greatest range of barley
variety yields. There was a close correlation this year between
ear number and site yield, emphasising the importance of
adequate plant populations and tiller number in barley.
Winter Barley Varieties - 4 Sites 2017/18 Yield variability between sites
0.00
Grayingham
Little Ponton
Ludlow
Sparrow was the highest yielding variety at 4.93t/ha and
PT240 a Clearfield® variety had the lowest yield at 3.30t/ha.
Oilseed Rape Varieties Mean of 3 Sites 2017/18
Yield (t/ha @ 85% dm) +/- Fungicide treatment
5
12.000
Harleston
Data from Grayingham, Little Ponton Ludlow and Harleston
Mean Untreated : 3.61 t/ha
Mean Treated : 3.93 t/ha
Response : 0.32 (8.86 %)
4
3
10.000
2
1
8.000
Sparrow
Wembley
Campus
DK Secret
INV1140
DK Expendient
WRH 532
Elgar
Architect
Incentive 45
Alizze
Django
Angus
INV1010 Hypro Duet
INV1155
PT256
Barbados
SY Harnas
DK Platinum
Dariot
PX126
DK Impressario CL
Anastasia
DK Imperial CL
Arrow
DK Exclaim
Sherman
Crome
Butterfly
Harper
DK Exalte
Phoenix CL
DK Pliny
George
INV1055
Veritas CL
SY Iowa
PT240 CL
Mean
0
6.000
4.000
Treated Yield (t/ha)
Untreated Yield (t/ha)
Data from Grayingham, Little Ponton and Ludlow
2.000
0.000
Carlisle
Cornwall
Grayingham
MOS
There was a large range in variety performance across three
of the sites, Valerie had the highest yield 10t/ha and Glacier
8.21 t/ha - a difference of 1.79 t/ha. Six row hybrids on
average had a small yield advantage 9.21t/ha, compared to
the two row varieties 9.06 t/ha.
Winter Barley Varieties Mean of 3 Sites 2017/18
Yield (t/ha @ 85% dm) +/- Fungicide treatment
10
9
Across three of the sites there was a small yield advantage to
conventional varieties 4.22t/ha, compared to hybrid varieties
4.03t/ha and the Clearfield® varieties as a group had lower
yields 3.75t/ha. There are of course other advantages to
growing Clearfield® varieties including Charlock control.
Average Oilseed Rape Yields - 2018
4.3
4.2
4.1
4.0
Mean Untreated : 7.99 t/ha
Mean Treated : 9.17 t/ha
Response : 1.18 (14.77 %)
3.9
3.8
3.7
8
3.6
7
3.5
Conventional
6
Hybrid
Clearfield®
Questions about our trials work or variety choice?
5
Treated Yield (t/ha)
Data from Carlisle, Grayingham and Morton-on-Swale
Untreated Yield (t/ha)
Contact us: information@hlhltd.co.uk

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