Sowing of the lawn
There are basically two types of sowing: hand sowing, generally applied to small surfaces, based on spreading, and machine sowing with spreading or row spreading, for larger sizes. Sowing by hand does not guarantee calibrated and uniform distributions, to optimize this method we recommend operating in the absence of wind and dividing the total sowing dose into four equal parts, each of which will be distributed crosswise over the sowing surface. The doses vary depending on the type and type of seed desired, however it should be remembered that sowing seeds that are too sparse lengthens the formation time of the turf and favors the establishment of weeds. A sowing too dense, for its part, generates several drawbacks: the essences with fast germination occupy the space of those with slow germination, therefore we will have an inhomogeneous lawn, besides too much density keeps the level of humidity high, favoring the onset of diseases . For broadcaster sowing, the distributor will be calibrated so as to spread half of the seed in a longitudinal and half direction in a transverse direction. Machines on the other hand can be of two types: with drop or centrifugal distribution. Another sowing technique is the row technique: in this case the machine must be calibrated for a spacing of no more than 2.5 cm. With these machines there is a good coverage of the seed and in general it is sufficient to make only one pass. It should also be borne in mind that when the selected seeds are particularly small, it is good practice to add inert materials such as sand to improve their distribution on the ground.
At the end of sowing, a small covering of the ground will be carried out which can be done by hand with a rake for small surfaces, while for larger extensions a very light harrow will be used. Alternatively, a topdressing can be used, which distributes a light layer of fine material such as sand onto the surface. In the presence of a very light and dry soil it is advisable to make a slight rolling, which will have the purpose of bringing the soil close to the seed and favoring the rising of the humidity which contributes to faster and more uniform rooting. The sowing period is one of the factors that determine the success of a turf: germination occurs with a sufficiently humid climate and with temperatures between 15 and 20 degrees. In Italy these conditions occur in the periods of September-October and March-April. In any case, autumn sowing is to be preferred as grasses are able to grow and develop more quickly. If at any point the conditions of the grass get worse you can also proceed with the seeding: after shaving the lawn and passing the aerator to remove felt and moss, a seed of the regeneration type is distributed, to be covered then with a bit of topsoil. Finally pass the roller. Irrigating regularly, the new grass germinates within a few days, giving the lawn a compact appearance.