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Lawn fertilization

Lawn fertilization


Lawn fertilization

Lawn fertilization is the cultivation practice that allows you to have a healthy turf, uniform in color and resistant to adversity. With fertilization, the lawn grass and the soil are supplied with all the nutrients they need to create vegetation with perfectly green and luxuriant leaves. The aesthetic performance of the lawn, its resistance to extreme climatic conditions and diseases, essentially depend on the type of fertilizer used, the periodicity and methods of fertilization. By carefully following the instructions given in the fertilizer purchase packages and distributing the right proportions of nutrients, both macroelements, such as nitrogen, phosphorus, potassium, and microelements, such as iron, you will be able to have a healthy, resistant lawn with an enviable aesthetic result.


Preparation

The fertilization of the lawn is often preceded by a phase that prepares the soil and the roots of the grass to better absorb the nutrients of the fertilizer. This phase is called rolling and serves to ventilate the turf as much as possible by allowing the air to penetrate up to the roots of the lawn. The rolling is carried out with special machines equipped with a roller with metal tips. The tips of the machinery, moving on the grass, penetrate into the deeper layers of the turf, ventilating them. By rolling, dead plant tissues that hinder the growth of the grass are also eliminated. The good ventilation of the lawn also allows to effectively absorb all the nutrients of the fertilizer.

  • Lawn fertilizer

    Fertilization is one of the main agricultural techniques used to ensure healthy lawn growth. The color, resistance and aesthetic performance of the turf will depend, in fact, on the type of ...

When to fertilize

The lawn should be fertilized four times a year, with three-month intervals. The first fertilization of the year must be carried out between the end of February and early March, when the grass, in full growth phase, requires a high amount of nitrogen. In summer and winter it is necessary to distribute fertilizers with a potassium content higher than nitrogen. In fact, it has been proven that potassium makes plants more resistant to diseases and climatic adversities caused by extreme temperatures (heat or frost). Nitrogen fertilization is strongly recommended even in autumn. Generally, the proportions of nutritional elements of lawn fertilizers must include a high percentage of nitrogen, an average percentage of potassium and a low percentage of phosphorus for spring and autumn fertilization; nitrogen and potassium in equal parts, in summer and winter fertilization.


Fertilizers to use

Fertilizers for the lawn can have an immediate effect and slow release. The first are the so-called nitric fertilizers which are immediately absorbed by the soil and the roots of the plant with the risk of excessive loss of nutrients due to the washout effect of the rains. Slow release fertilizers gradually release nutrients to the soil and the roots of the turf, allowing you to extend the time between one fertilization and the next. The effect of slow release fertilizers lasts about three months, up to four. For a good fertilization of the lawn it is advisable to use only slow release fertilizers, in order to cover the nutritional needs of the turf for all phases of its vegetative cycle.


How to fertilize

The fertilization of the lawn is carried out with the same techniques and the same methods of sowing, or with the spreading of the fertilizer by hand or with special fertilizer spreading machines. Both by hand and mechanically, the fertilizer must be distributed evenly to nourish every single corner of the lawn. A correct fertilization also provides for the distribution of quantities of fertilizer in proportion to the surface to be fertilized and the period in which it is carried out. The average amount of fertilizer to be distributed during the year is about three kilograms per hundred square meters. During the spring fertilization period, that is, during the growing season, it is also useful to provide the lawn with iron-based fertilizers that give the grass a vivid and intense color. The same color can be obtained with abundant nitrogen fertilizations, except that the latter also have contraindications, such as the abundant growth of the turf, its predisposition to diseases and poor resistance to dry heat. Iron, on the other hand, gives the grass the same effect as nitrogen, but without the risks of the latter. On the market there are complex fertilizers for lawns that contain nitrogen and iron, although in the practice of gardening it is preferred to use simple iron sulphate. This compound not only makes the lawn greener, but also fights moss, one of the most frequent weeds in our lawns. The iron sulphate is dissolved in ten liters of water and distributed with a weed killer pump. The dose to revive the lawn is about 55 grams per 100 square meters, while that to combat moss is 400 grams per 100 square meters. The fertilizer, whatever it is, must be distributed on mild days, while days when temperatures are either excessively hot or too cold must be avoided.




Lawn fertilization

When to fertilize and which fertilizers are suitable for the lawn or turf? How much fertilizer to use for each square meter?

The home garden with a bright green turf and free of stains caused by the attack of parasitic and fungal diseases is the pride of the garden enthusiast and of those who have the classic green thumb.


FERTILIZING THE LAWN: WHICH FERTILIZERS?

The slow release fertilizer is released gradually, feeding the roots continuously for about 3-4 months. In English lawns, which are more demanding, we can use a ready-made lawn fertilizer from April to July.

Nitrogen is the main nutritional element: it serves for the growth of the plant, the lengthening of the life cycle and gives the intense green color. Generally, nitrogen is used in fertilizers complete ternaries, associated with Phosphorus and Potassium: these fertilizers show the initials of these three chemical elements on the package, that is NPK. Often these fertilizers are integrated with useful microelements, such as Iron, Magnesium, Zinc and Copper.

The organic fertilizers, that is natural and not of a chemical nature, suitable for the lawn are manure, earthworm humus, cornunghia and guano. They are used to supplement the action of chemical fertilizers or replace them on a healthy lawn and already very fertile soil. Manure can be used in the form of dry manure, marketed in powder or pellets. Earthworm humus, cornungh and guano are very rich in nitrogen but more expensive than other fertilizers.


Mow the lawn with a tall, thin cut

With the arrival of summer all interventions involving the lawn slow down. Fertilization should not be carried out, plus there is even more time between one cut and the next. This is because low grass suffers most in periods of drought. So, in addition to shortening the time between one cut and the next, you must opt ​​for a higher cut, since tall grass protects the ground more.

The grass should be thinned in the late afternoon, when it is now dry but no longer subject to the sun's rays.

Concealed lawn irrigation


NPK: the fantastic 3!

NPK is the abbreviation for nitrogen (N), phosphorus (P) and potassium (K), the three fundamental elements underlying the nutrition of the lawn and therefore of any fertilizer.

The variants of fertilizer for the lawn, which we find on the market, also differ according to the contained quantity of each of these elements.

  • L'Nitrogen (N)stimulates vegetation and is important for the growth.
  • The Phosphorus (P) it is important for the roots and for the photosynthesis.
  • The Potassium (K) maintains and increases the resistance of plant tissues.

A good fertilizer therefore it must be an NPK compound, with a higher dosage of nitrogen and a variable quantity of the other two elements, to be chosen also according to the season and your type of lawn.

If you are still undecided on what to do, find one on our blog small guide to choosing the right lawn for you.


Spring fertilization of the lawn

The importance of fertilizing the lawn before summer

The lawn to be in good vegetative condition must be supported much more than most non-experts believe.

In spring, fertilizing the lawn has the main objective of helping the development of the seedlings and their roots.

Good fertilization in the months leading up to summer is important because if the plants are appropriately strengthened, increasing the sturdiness of the stems and deepening the root system, they will face the summer heat and any water shortage with less stress.

We therefore advise you to make a good fertilization, possibly before mid-May. Good mature compost or even manure can be used
granular, preferably organic.

Once the fertilizer has been spread, it is always useful to carry out a good irrigation, both to bring any particles of fertilizer left on the leaves to the ground, and to immediately begin their dissolution in the soil.


January

Nitrogen, phosphorus and potassium with 4-8-12 fertilizer with fast release nitrogen, dose 5Kg / 100 m2.

Nitrogen, phosphorus and potassium with 10-0-7 fertilizer with fast release nitrogen, dose 3Kg / 100 m2. every 15 days

Nitrogen, phosphorus and potassium with 10-0-7 fertilizer with fast release nitrogen, dose 3Kg / 100 m2. every 15 days

Nitrogen, phosphorus and potassium with 10-0-7 fertilizer with fast release nitrogen, dose 3Kg / 100 m2 / month

Nitrogen, phosphorus and potassium with 10-0-7 fertilizer with fast release nitrogen, dose 3Kg / 100 m2 / month

Nitrogen, phosphorus and potassium with 10-0-7 fertilizer with mixed release nitrogen (rapid + controlled), dose 3Kg / 100 m2 / month

Nitrogen, phosphorus and potassium with 10-0-7 fertilizer with mixed release nitrogen (rapid + controlled), dose 3Kg / 100 m2 / month

Nitrogen, phosphorus and potassium with 10-5-8 fertilizer with mixed release nitrogen (rapid + controlled), dose 3Kg / 100 m2 / month

Nitrogen, phosphorus and potassium with 10-5-8 fertilizer with mixed release nitrogen (rapid + controlled), dose 3Kg / 100 m2 / month

Foliar fertilization every 15 days. with nitrogen, phospho, potassium fertilizer titre 16-0-0 + 6 Fe (iron), dose 200 cc / 100 m2.

Nitrogen, phosphorus and potassium with 10-5-8 fertilizer with mixed release nitrogen (rapid + controlled), dose 3Kg / 100 m2 / month

Foliar fertilization every 15 days. with nitrogen, phospho, potassium fertilizer 16-0-0 + 6 Fe (iron), dose 200 cc / 100 m2.

Nitrogen, phosphorus and potassium with 10-5-8 fertilizer with mixed release nitrogen (rapid + controlled), dose 3Kg / 100 m2 / month

Nitrogen, phosphorus and potassium with 10-0-7 fertilizer with mixed release nitrogen (rapid + controlled), dose 3Kg / 100 m2 / month

Nitrogen, phosphorus and potassium with 10-5-8 fertilizer with mixed release nitrogen (rapid + controlled), dose 3Kg / 100 m2 / month

Nitrogen, phosphorus and potassium with 10-0-7 fertilizer with mixed release nitrogen (rapid + controlled), dose 3Kg / 100 m2 / month

Nitrogen, phosphorus and potassium with 4-8-12 fertilizer with fast release nitrogen, dose 5Kg / 100 m2.

Nitrogen, phosphorus and potassium with 4-8-12 fertilizer with fast release nitrogen, dose 5Kg / 100 m2.

Also with regard to the timing for the fertilization of the various essences, the difference between micro and macrotherms must be emphasized: the microtherms must be fertilized in spring and autumn, the macrotherms require the greatest nutritional contributions in summer.

Distribution technique

There are basically two ways to fertilize: granular and liquid fertilization.

Granular fertilization

Granular fertilization is essential for the quantitative supply of nutrients, as well as for their availability at the root level. It is necessary to provide a product with small and regular granules, the uniformity of distribution is a guarantee of greater coverage and better results, without the "patchy" effect.

This is achieved by means of a “fertilizer spreading” trolley, distributing the product in a single step, and avoiding stepping on it in the second step which would cause the fertilizer granule to adhere to the leaf, causing burns.

Immediately after distributing the fertilizer, a short irrigation cycle (2-3 mm of water) is applied in order to break up the fertilizer granule and wash away any powdery residue from the grass.

Liquid fertilization

The "liquid fertilization" is that with products in liquid form or with soluble solid products dissolved or diluted in water. The substantial difference with the granular fertilizer is in the quantity introduced, which in the case of the liquid fertilizer is about 1/10 of the granular one. It follows that liquid fertilization implies a higher frequency of intervention.

Usually from 5 to 10 liters of water / 100 m2 are used in which 300 cc (equal to 0.3 liters) of fertilizer type N-P-K + Fe are dissolved or diluted, in proportion: 16-0-0 + 6.

Since these are products with foliar absorption, it is necessary to avoid any form of wetting within the two hours following the treatment.

Liquid fertilization is practically carried out with a backpack pump in small areas or with an atomizer equipped with a weeding bar in medium and large areas.

Which fertilization technique to favor?

Personally, I prefer an integrated technique with basic granular fertilizations and foliar (i.e. liquid) fertilizations as a complement, a technique that allows complete nutrition of the turf with absorption distributed in all tissues.

(Drawings by Daniela Baldoni)

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Video: Fertilize Your Lawn - Beginners Guide to Understanding Fertilizer