production costs, demand, and competition
influences on prices. as the chart suggests, prices that farmers receive for their commodities and other products depend on supply and demand factors. the amount of output available from other farmers, from imports, or the extent to which other products represent good substitutes affect the supply side. demand for the product can ultimately be traced back from the consumer through the value chain. manufacturers will base their orders on expectations of demand. if demand is expected to be high, prices will tend to rise; if less demand is expected, prices are more likely to decrease.
I think you are talking about the branch because it's a part of the plant that arises from the main axis.