Table 3.

Emerging agricultural waste by-products as soil amendments.

Agricultural waste by-product	References
Rice residuals (e.g., bran, husk)	[127,128,129,130,131,132]
Wheat residuals (e.g., bran, husk)	[133,134]
Oat biomass	[135]
Saw dust	[136]
Coconut shells and fiber pith	[137]
Seaweed	[138]
Nut shells from walnuts, peanuts, hazelnuts, and coconuts	[139,140,141,142,143]
Cotton seed hulls and cotton stalks	[144]
Waste tea leaves	[145]
Spent mushroom substrates	[146]
Olive oil extraction wastes (i.e., alperujo)	[147,148]
Sugarcane and beet sugar processing by-products (e.g., pulp, filter cake, bagasse, lime, vinasse, sugar foam [SF], boiler ash)	[143,149,150,151,152,153,154,155,156,157]
Apple cores and peels	[158]
Banana peels	[159]
Orange peels	[159]
Soybean hulls	[143]
Sunflower stalks	[144]
Coffee grinds	[160]