Agricultural waste are plant residues from agriculture. These waste streams originate from arable land and horticulture. Agricultural waste are all parts of crops that are not used for human or animal food. Crop residues consist mainly of stems, branchs (in pruning), and leaves.[1] It is estimated that, on average, 80% of the plant of such crops consists of agricultural waste.[2]
The four most commonly grown agricultural crops worldwide are sugarcane, maize, cereals and rice.[3] The total weight of all these crops is more than 16,500 billion kilograms per year.[4] Since 80% of this consists of agricultural waste, many tens of thousands of billions of kilograms of agricultural waste remain worldwide.[5] Some 700 million tonnes of agricultural waste is produced annually by the EU.[6]