Oats and beans and barley grow, Oats and beans and barley grow, Not you, nor I, nor anyone know, How oats and beans and barley grow. First the farmer sows the seed, Then he stands and takes his ...

used such practices as far back as 6,000 B.C. Medieval farmers in Northern Europe grew multiple crops in sequence, such as wheat, followed by barley or oats, then legumes for livestock fodder.