and agricultural products, fertilisers machinery and rolling stock minerals and rocks/ores metals and steel products food and beverages forest products perishables and temperature sensitive cargoes oils, fats, acids, chemicals and petroleum products other organic materials, such as rubber, leather,...
while there are other possibilities, barley and wheat prove to be the most commonly used. however, whichever type you choose, quality is always of utmost importance. always select seeds with a germination rate of at least %. how much does it produce? how much seed?...
note: you will occasionally hear reference to growing "perennial sunflowers." those are not the plants that grow the edible sunflower seeds, but instead reference jerusalem artichokes. sunflowers take a lot of space in the garden, but their cheerful blooms are more than worth it. plus, they're helpful...