Ploughing disturbs the microbes and dries out the soil. It also releases tonnes of CO2 per hectare. ‘No til’ techniques sow the seed in the top soil without tearing off the existing foliage or applying herbicides which are also bad for microbes. There are several no till techniques, including “Pasture Cropping” and “Advanced Sowing”. The one ‘direct drills’ the seed into pasture while the other slices a line through the pasture and inserts the seed. The crop grows up above the pasture and can be harvested or grazed. The pasture usually thickens and grows more vigorously after such treatment.