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Rob R
Joined: 28 Oct 2004 Posts: 31902 Location: York
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dpack
Joined: 02 Jul 2005 Posts: 46168 Location: yes
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Tavascarow
Joined: 06 Aug 2006 Posts: 8407 Location: South Cornwall
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Rob R
Joined: 28 Oct 2004 Posts: 31902 Location: York
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Tavascarow
Joined: 06 Aug 2006 Posts: 8407 Location: South Cornwall
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Rob R
Joined: 28 Oct 2004 Posts: 31902 Location: York
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Tavascarow
Joined: 06 Aug 2006 Posts: 8407 Location: South Cornwall
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Posted: Tue Oct 27, 15 5:51 pm Post subject: |
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Rob R wrote: |
I was thinking more of the evidence of higher yields, showing a correlation that goes above and beyond the fact that it was a good growing season for everything this harvest, even wind pollinated crops. If it were also to show the decreased yield in the treated crop then that would be conclusive, but I'm struggling to find the relationship in anything I have read, other than optimistic conjecture.
You know me, I'm no fan of pesticides, but I do like to have a strong case behind my opposition. |
From ADAS in the first link.
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ADAS, the UK's largest independent agricultural consultancy, has confirmed that with 15% of the oilseed rape harvested, yields are between 3.5 and 3.7 tonnes per hectare, higher than the normal farm average of 3.4, reporting:
"An estimated 15% of winter oilseed rape was also harvested with yields typically above the 5-year average, although it must be noted that yield information is based on a small area harvested to date. Limited quality data is available, although early quality indicators are good."
STOP PRESS 6th August 2015 - A second week of harvest data now more than confirms the trend. With 35% of the UK winter oilseed rape area harvested, "national yield estimates for winter barley and oilseed rape remain above the 10 year average, although this does hide some variability with low yields reported on winter oilseed rape that suffered poor establishment due to a range of factors, including pigeon and adult cabbage stem flea beetle (CSFB) damage." |
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Rob R
Joined: 28 Oct 2004 Posts: 31902 Location: York
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Tavascarow
Joined: 06 Aug 2006 Posts: 8407 Location: South Cornwall
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Rob R
Joined: 28 Oct 2004 Posts: 31902 Location: York
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Tavascarow
Joined: 06 Aug 2006 Posts: 8407 Location: South Cornwall
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Rob R
Joined: 28 Oct 2004 Posts: 31902 Location: York
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Mistress Rose
Joined: 21 Jul 2011 Posts: 15932
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dpack
Joined: 02 Jul 2005 Posts: 46168 Location: yes
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Hairyloon
Joined: 20 Nov 2008 Posts: 15425 Location: Today I are mostly being in Yorkshire.
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