Industrial Revolution sectors of the economy. However, per-capita food supply in Europe was stagnant or declining and did not improve in some parts of Europe until the late 18th century. Industrial technologies that affected farming included the seed drill, the Dutch plough, which contained iron parts, and the threshing machine. Jethro Tull invented an improved seed drill in 1701. It was a mechanical seeder which distributed seeds evenly across a plot of land and planted them at the correct depth. This was important because the yield of seeds harvested to seeds planted at that time was around four or five. Tull's seed
The Seed Savers' Network peasants who have the skills and knowledge of its utilisation. Seeds with proprietary rights – plant variety rights – are not suitable for home seed saving as it is illegal to propagate from patented seed. Since its establishment in 1986, The Seed Savers' Network has collected and conserved local varieties within a network of gardeners who save and swap locally adapted seeds. From 1986 to 2008 it had a seed bank that received seed samples from around Australia. Over the space of eight years, culminating in 2008, that seed flow has been decentralised out to sub-groups, Local Seed Networks. These