Headers harvest crops such as wheat, barley and oats. These machines are also known as combine harvesters. Headers combine the three operations needed to harvest a crop — reaping, threshing and winnowing.
The comb on the front of the header cuts the heads off the stalks (reaping). The auger pulls the heads into the machine. The stalks left standing in the paddock are called stubble.
Threshing involves separating the grains from the head. The drum rotates, beating the heads. Straw and chaff (bits of stalk) are fed out the back of the header. Straw is spread over the ground. Stock can graze on this and the standing stubble left after harvest.
There are a number of screens in the header. Grain passes over these and fans blow the husks away. This is called winnowing. The clean grain is stored in the box. When this is full the grain is augered out into a chaser bin or truck.
Find the meaning of these words.
reap separate paddock graze auger
harvest crops passes over store blow
combine stalks spread rotate straw
Answer the questions below.
- What does the text talk about?
- What can combine harvesters process?
- What is the functions of comb?
- What is stubble?
- What is threshing?
- What is winnowing?
- The words THIS in last sentence refers to …….
- When do the grains taken into truck?