黑麦草和杂草控制——种植户的观点.pdf

1、Blackgrass control-A growers viewAdrian JoyntAdrian Joynt Retired Farm Manager Farm Manager Apley Farms,Shropshire 15 years 1280 ha Arable&Beef business 350 ha winter wheat 80 ha Winter OSR 35 ha Winter Barley 40 ha Winter Beans 64 ha Annual Legume Fallow(SFI)80 ha Spring Barley 120 ha let for Potat

2、oes/Salads Member of the BASIS Professional RegisterBlackgrass Timeline of problemSuspected sources of infectionControl measures Financial implicationsKey messages Blackgrass History First saw Blackgrass in Spring 2013 on a farm that had been taken back in hand autumn 2012 Patches of Blackgrass acro

3、ss the field Blackgrass found in 2 other fields on the same farm in 2013,one field a dense patch in a small area(.2ha),the other field more widespread but low density Blackgrass found in 2016 on another farm that had been farmed in hand for over 20 years,in the middle of a field,the area had a fungi

4、cide trial 2 years previously 2017-Two fields on another farm that had been farmed in hand for 30 years plus,occasional plants across the whole area,heavier soil type Three other fields with small patches around the headlandSources of infection First three fields all on the same farm had a history o

5、f carrot growing,most likely imported in the straw used to cover the crop The area where the fungicide trial was sited suspected that in came in on the plot combine The fields with the occasional plants in them had received an application of imported broiler manure the previous autumn.The three fiel

6、ds with patches around the headland,most likely source was the contractors balerHow did we deal with it?RRR resistance,efficacy of Atlantis was rapidly declining Zero tolerance,sprayed off worst areas with Glyphosate,hand rogued the rest of the field Minimum o