agriculture alternative fuel biofuel castor ethanol farm field green greenery mamona oilseeds plant plantation bagasse bamboo-like biomass brown-leaves byproducts cane culms cylindrical dry fibrous-stalks firm fructose grass grass-family green-leaves harvesting internodes jointed leaves perennial Poaceae pulp saccharum-officinarum stalk stems stout sucrose sugar-cane sugar-juice sugar-production sugarcane sweet sweetener tall thick