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Mowing

Thanks to regular mowing, the growth in breadth and the density of the lawn increases. This is followed by the increase in the capacity of the lawn. The mowing height is regulated depending on the needs. Sports fields require a different root height in comparison to parks and lawns next to houses. By rainy weather and wet grass, the lawn should not be mowed. The tools for mowing must be sharp, so that the grass is cut smoothly, like with the use of scissors. The frayed edges left after mowing make the plant prone to illness. The best results are achieved with the use of a spindle mower. Sickle mowers are also of use, however, when it comes to the quality of mowing, it has worse results. In general, the swath is to be collected, in order to eliminate the creation of grass felt. During wet weather, the swath is to be collected necessarily.

Lawn scarification

Grass felt is created out of cut grass, dead grass leaves, blades, and dead parts of different grass types. The felt has similar features to these of peat. In dry state, it is hydrophobic, it absorbs water like a sponge and keeps nutrients inside. If the grass felt reaches a certain thickness, it disables the exchange of gases in the soil and decreases the penetration of fertilizers during wet weather. This results in rotting processes in the carrier layer of the lawn. Grass dies. In other cases, the roots start to grow in the grass felt, since this is the place where the roots find water and nutrients. If the felt reaches the thickness of about 5 mm, it should be removed with a scarifier. The blades of the scarifier should be set in such a way, that they touch the surface of the carrier layer of the lawn minimally. Otherwise, the knives will blunt. The cut off material should be collected. The best period for conducting this type of activity is the beginning of plant vegetation period, in the spring.

Aeration

The upper 5 – 8 part of the carrier layer of the lawn thicken as a result of usage and maintenance. In effect, the size of the pores decreases in these places, the absorption of water and gas exchange are reduced, this means, that the conditions for the vegetation of grass deteriorate. The condensation level should be removed from time to time. One of the ways of avoiding such a situation is done by means of aeration. Thanks to airing, the grass felt becomes looped, and the gas exchange, nutrient management and water management improve significantly. In the source literature, we can find numerous opinions concerning the m2 punctures. It is generally recommended to make from 800 to 1000 punctures on a m2. However, in practice, it turned out, that 400 to 500 punctures on a m2 is the standard amount which allows one to get satisfactory results. In the case of sand carrier layers of the lawn, the soil remaining after the puncture and after the drying may, together with the sand, serve for covering the grass cover with the use of a trawl. In older places, with tighter carrier layers of the lawn, the squeezed parts of the soil should be removed and the loops should be filled with sand. Such works may be performed from May to September. The carrier layer of the lawn must, for this purpose, be thoroughly wet. In the case of dried carrier layers, the squeezed spikes cannot penetrate the inside deep enough, and in effect, the device wears down much faster. The frequency of the activity depends entirely on the condition of the place. There are grass layers which have a tendency to thicken, while others remain stable. The intensiveness of use plays an important role in here, together with weather conditions. The sufficient amount is two airing processes per year. The process should entail along and across movement.

Deep scarification

If the carrier layer of the lawn has thickened on the entire length to a degree, to which collecting water is performed with delay, this means, that simple aeration is not enough. Devices scarifying earth work with near-surface constructions on the depth of 30 cm and more. Two methods are in use here – creating holes (punctures) and slits. In the case of impermeable ground, several boring holes are made with the use of specialized boring tools, which collect the surface water and make it soak through. Another method of deep scarification is digging out deep slits. With the use of knives, several slits are made in the ground, which are then filled with sand.

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