Dr Sarah Cook, Senior Research Consultant at ADAS, has discovered that ADAS annual black-grass seed testing is pointing to high levels of dormancy which, in turn, is likely to lead to protracted germination this autumn.  The test is designed to break dormancy by growing seed in specific conditions over a fortnight; only 24% of the samples germinated.  While the result is not unusual for black-grass, it emphasises the need to delay drilling, establish a competitive crop and optimise pre-ems.   Read the full article on this page.