<Tr> <Td> Docks </Td> <Td> Rumex spp . </Td> <Td> Grassland </Td> </Tr> <Tr> <Td> Dove's - foot cranesbill </Td> <Td> Geranium molle </Td> <Td> Broad - leaved crops </Td> </Tr> <Tr> <Td> Fat hen </Td> <Td> Chenopodium album </Td> <Td> Broad - leaved crops </Td> </Tr> <Tr> <Td> Hemp nettle </Td> <Td> Galeopsis spp . </Td> <Td> Broad - leaved crops </Td> </Tr>

What kind of measures did the british take to improve agriculture