Scary, third of arable land lost in only 40 years

[bigpaul]

crop rotation was something that used to be practised, if you grow the same crop in the same place year on year on year(as we saw when we lived in Somerset) without chemicals you are putting nothing back into the soil you are also introducing the same diseases to the ground. in the 1960s one field in four was left "fallow" and not used, the next year the crops were moved so that the same crops were not grown in the same field the next year.
stock(animals) rotation is needed so that the ground can recover, in this area(hill farming) they are moved every few days. it is also needed to enable the farmer to get a grass crop off the field in the form of hay or silage.