Adam Tooze in 'the wages of destruction ' states that the problem was the backwardness of the German agriculture ;most of German farms were to small and could not use mechanised means . In Germany there was only 2.1 arable ha (5 acres ) per farm,in the UK :3.8 ha .29 % of the German work force was working in the agriculture sector ,most farms had big debts ,the state had little money to buy fertilizers . The result was that the output of the agriculture was very low .