Broadseed
With broad sowing , the seeds are distributed over the entire surface of the seedbed , in contrast to drill or band sowing . This can be done manually or with the assistance of the device. This sowing method is common in nurseries and, in the case of small-seeded summer catch crops, in agriculture. In the case of grain, it can only be found in small farms.
Drill seed
Band seed
Broadseed
When sowing by hand, the person sowing has tied a seed sack or a seed tub. The seeds are gripped with one hand while walking and are spread with an open palm every second step. One also speaks of seed throwing, right-handers throw when stepping on the right foot, left-handers accordingly on the left.
For small seeds with a low thousand-grain weight , only the thumb and middle finger are used to grasp the seeds and the seeds are evenly distributed over the outstretched index finger.
The goal - e.g. B. to sow approx. 600 grains per square meter in cereals - is tried to achieve by the amount per throw, the throwing width and stride length; appropriate training is necessary. At a walking speed of 70 / minute and a throwing width of 2 meters, about 0.5 ha can be sown per hour .
Hand tools with a crank-driven spreading mechanism, fertilizer spreaders and seed drills with disused row sowing devices are available for machine sowing.
Immediately after sowing , the seeds must be prepared in a suitable manner, e.g. B. be worked into the ground with the harrow to create the conditions for germination and to protect against bird damage , especially the rooks . With garden roller , Andrückbrett or pinch of ground connection can the seed be improved.
With the introduction of drill seeding for grain, the amount of seed could be reduced by approx. 30%. The grains are evenly deposited by coulters at a seed-specific depth, usually 2–4 cm. With modern sowing combinations, sowing can now be done seated and much faster.
Other methods
literature
- Klaus-Ulrich Heyland (ed.): Special crop production. 7th edition, Ulmer, Stuttgart, 1952, 1996, ISBN 3-8001-1080-6
- Ernst Klapp : Textbook of arable and crop production. Paul Parey publishing house, Berlin and Hamburg 1958.
- Martin, Wilhelm: Handbook of Agriculture. Publishing house Eugen Ulmer Stuttgart 1895.