Regional R&D update 03 T he winter oilseed rape trials have been drilled at AgriiFocus and have established well but there has been some significant cabbage stem flea beetle damage in the surrounding farm crops. This year we also have fully replicated variety trials on various iFarms across the region, including South Wales, Somerset and Dorset, which will give us useful information on winter oilseed rape variety performance in terms of disease susceptibility and yield. The replicated trials are very important because data can be analysed to provide useful, statistically significant information to growers and agronomists in the relevant geography. In addition to winter oilseed rape, we have expanded our replicated work on winter wheat varieties, fungicide and micronutrition to the iFarms in Ludlow, Brackley, Somerset, Dorset and South Wales as well as at AgriiFocus. Again, the objective of these trials in different geographies is not only to identify new varieties which have a good level of resistance against key diseases in the local geography but also monitor the existing varieties in terms of their susceptibility to different strains of yellow rust and Septoria. The fully replicated fungicide and micronutrition trials on these iFarms will help us to gather more data in terms of the effectiveness of different spray programmes in enhancing yields and maximising the profitability of local farms. or Seed Manager about the latest Agrii variety advisory list, which is updated every year in terms of yellow rust but also other key diseases and lodging scores. We are also involved in improving nutrient use efficacy of crops by targeting ofnutrientsthroughourSoilQuestprecision service. On a grower’s farm near Dorset over the last few years, our SoilQuest team hasbeeninvestigatingthebenefitsofusing variable rates of P–fertiliser application to raise the indices in field zones which were below the intended target index (20 mg l-1 ) with the objective of reducing intra-field variability. The results tend to suggest that variable rate application of P reduced intra-field variability in five out of six fields (Table 1 shows some of the results). More case studies on this work will be presented at upcoming iFarm meetings so please contact your agronomist for more information, or get in touch for the full results from this study. 2017 harvest data is currently being analysed, and we have some interesting results in terms of yield responses to spray programmes. This year was comparatively drier than 2016, with low Septoria, but high yellow and brown rust pressure. In the uncertain weather conditions variety resistance and the right chemistry is crucial to manage Septoria and other key diseases in winter wheat. Averaged over all sites in the west, the highest yielding varieties were Siskin, Graham and Bennington in the treated plots. Crusoe had the highest level of brown rust whilst JB Diego suffered from yellow rust and responded positively to the robust fungicide programme (Fig 1). This highlights the importance of varietal resistance. Growers should pay attention when selecting varieties because susceptible varieties require a robust fungicide programme which increases input cost. In addition, yellow rust strains are constantly changing – please ask your agronomist Research update: AgriiFocus and iFarms around the region Syed Shah, R&D Manager 2017 West Region Serial Group Variety eated Yield % of Contro treated Yield % of Contreated Specific Weight (kg/hl) 1 Group 1 KWS Zyatt 105 85 75 1 RGT Illustrious 105 88 74 1 Crusoe 103 72 74 1 Skyfall 101 82 77 1 KWS Trinity 100 79 75 2 Group 2 KWS Siskin 106 86 75 2 KWS Lili 102 75 74 3 Group 3 KWS Barrel 101 77 73 3 Zulu 101 68 72 3 Elicit 100 83 74 3 KWS Basset 96 73 74 4 Group 4s Bennington 107 78 75 4 RGT Westminster 105 79 71 4 LG Sundance 104 82 70 4 Revelation 100 81 73 4 Leeds 94 72 75 5 Group 4h Graham 107 88 75 5 Gleam 107 81 75 5 Solace 105 86 75 5 RGT Gravity 105 82 74 5 KWS Kerrin 105 80 73 5 Costello 104 80 77 5 Belgrade 104 82 72 5 JB Diego 103 67 75 5 Relay 103 83 75 5 Dunston 103 81 75 5 Marston 102 76 73 5 Dickens 102 74 74 5 KWS Santiago 98 69 73 5 Evolution 96 82 69 0   20   40   60   80   100   120   KWS   Z ya.   RGT   I llustrious   Crusoe     Skyfall   KWS   T rinity   KWS   S iskin   KWS   L ili   KWS   B arrel   Zulu   Elicit   KWS   B asset   Bennington   RGT   W estminster   LG   S undance   RevelaGon   Leeds     Graham   Gleam   Solace   RGT   G ravity   KWS   K errin   Costello   Belgrade   JB   D iego   Relay   Dunston   Marston   Dickens   KWS   S anGago   EvoluGon   Group  1   Group  2   Group  3   Group  4s   Group  4h   Grain   y ield   ( %   o f   t he   c ontrol   v arie3es)   Grain  yield  of  winter  wheat  varie3es  2016-­‐2017   Averaged  over  Agriifocus,  Brackley,  Somerset,  S  Wales  and  Dorsert)     Treated  Yield  %  of  Controls   Untreated  Yield  %  of  Controls   Fig 1 Grain yield of winter wheat varieties 2016-2017 (% yield of the control varieties) Statistics FIELD NAME AND YEAR OF SAMPLING Drove Field Field Front Gypsey Pond 2013 2016 2013 2016 2013 2016 Mean 20.54 20.62 16.04 20.6 15.7 19.0 Minimum 14.4 18.0 14.4 17.0 12.0 18.0 Maximum 29.79 24.0 18.0 24 19.2 20.0 Table 1 Summary Statistics of P (ppm) of the samples collected in 2013 and 2016 collected from three fields (Drove field, Field Front and Gypsey Pond) •Target (20 mg L-1 of available P) Grain yield of winter wheat varieties 2016-2017. Averaged over Agriifocus, Brackley, Somerset, S Wales and Dorset Treated Yield % of Controls Untreated Yield % of Controls 2017 West Region Serial Group Variety eated Yield % of Contro treated Yield % of Contreated Specific Weight (kg/hl) 1 Group 1 KWS Zyatt 105 85 75 1 RGT Illustrious 105 88 74 1 Crusoe 103 72 74 1 Skyfall 101 82 77 1 KWS Trinity 100 79 75 2 Group 2 KWS Siskin 106 86 75 2 KWS Lili 102 75 74 3 Group 3 KWS Barrel 101 77 73 3 Zulu 101 68 72 3 Elicit 100 83 74 3 KWS Basset 96 73 74 4 Group 4s Bennington 107 78 75 4 RGT Westminster 105 79 71 4 LG Sundance 104 82 70 4 Revelation 100 81 73 4 Leeds 94 72 75 5 Group 4h Graham 107 88 75 5 Gleam 107 81 75 5 Solace 105 86 75 5 RGT Gravity 105 82 74 5 KWS Kerrin 105 80 73 5 Costello 104 80 77 5 Belgrade 104 82 72 5 JB Diego 103 67 75 5 Relay 103 83 75 5 Dunston 103 81 75 5 Marston 102 76 73 5 Dickens 102 74 74 5 KWS Santiago 98 69 73 0   20   40   60   80   100   120   KWS   Z ya.   RGT   I llustrious   Crusoe     Skyfall   KWS   T rinity   KWS   S iskin   KWS   L ili   KWS   B arrel   Zulu   Elicit   KWS   B asset   Bennington   RGT   W estminster   LG   S undance   RevelaGon   Leeds     Graham   Gleam   Solace   RGT   G ravity   KWS   K errin   Costello   Belgrade   JB   D iego   Relay   Dunston   Marston   Dickens   KWS   S anGago   EvoluGon   Group  1   Group  2   Group  3   Group  4s   Group  4h   Grain   y ield   ( %   o f   t he   c ontrol   v arie3es)   Grain  yield  of  winter  wheat  varie3es  2016-­‐2017   Averaged  over  Agriifocus,  Brackley,  Somerset,  S  Wales  and  Dorsert)     Treated  Yield  %  of  Controls   Untreated  Yield  %  of  Controls