Building a vegetable salad is not an easy task and if you do not follow some key principles, the poorly structured structure can affect the crop, production decreases, while the amount of phytosanitary used increases. Here are the most common ten mistakes made in building a solar, mistakes that can affect your culture and increase the cost of construction:
1. The height of the side wall is inappropriate
The lateral height of the sun plays an essential role when it comes to lateral ventilation. Solariums with a wall of less than 1.5 m affect the pace of plant growth, so that everything that grows above that line disappears over time. Thus, for example, in the case of undetermined growth tomatoes, the flower is dried and production is substantially decreased. This happens because the warmer air, lighter, rises to the solar lid and remains stuck there, where the temperature can reach up to 50 ° C. Solution: The solar side wall should have a height of at least 2.2 meters to avoid the plant flowers withering and falling due to an inadequate height of the side wall.
2. Total solar power is too low
The low height of the sun is equal to the small volume of air, which leads to inadequate ventilation of the plants. A larger volume of air at the top means a solar where the temperature drops much faster after the sun sets, something that should not be neglected when it comes to spring and late autumn crops. The warm air captured at the top of the sun will cool harder after sunset, so the optimum plant growth temperature will last for a longer period. So you will get a springtime early spring advantage and prolong the autumn culture cycle in October and early December. Solution: It is recommended that the total solar height exceeds 4.5 m
3. Do the ventilation of the solar system only in front or in the back.
Some sunscreen engineers say that sheltered spaces up to 30m long can only be ventilated on the front and back with wide open doors. This concept is wrong because practice confirms the theory that only sun-dried solariums reduce crop production or uniformity. In such solariums it can be noticed that the heads are more developed, while in the middle of the sun the plants are underdeveloped. This is explained by the fact that such a ventilation does not allow a correct distribution of the essential substances to the growth of the green mass: oxygen and carbon dioxide.
Solution: It is recommended to use side ventilation throughout the entire length of the sun.
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4. The foil is not anchored properly
The foil used to clothe the sun has the property of expanding and contracting depending on the ambient temperature. As most sunbaths are built in spring before planting or autumn after harvest, temperatures in that period range from 15 ° C, spring to 20 ° C in the fall. Whether you choose to make your solarium now or in the spring, you should know that the most obvious problems that cause the fact that you do not use a properly anchored foil appear at temperatures above 35 ° C. At such a temperature, the foil dilates to the maximum which makes it “butterfly”, and the small drops of condensation formed during the series fall on the leaves, thus favoring the development of fungi, bacteria and viruses. Solution: The foil could be anchored with anchoring strap or ribbon. When choosing the foil, it has to be quite resistant to wind gusts, which in some areas can reach 90 km / h. The foil mounts between the arches, trapped by the spikes in the ground on both sides of the sun, every two meters.
5. Use a cheap foil
Because of the limited budget and large initial investment in a solar, many farmers prefer to use affordable film. As a result, the foil does not provide protection against ultraviolet rays that can affect both the plant and the fruit. Such a film changes more often, and the effort to change a film on the sun sometimes costs more than the film. Often the change of sheet does not take into account labor and lost time. Choosing a professional film is based on: – degree of UV treatment. This indicator is extremely important because without this additive the foil strength will be lower due to the photooxidation degradation process caused by the ultraviolet radiation that ultimately leads to the tearing of the solar film. – whether or not the film contains IR (Infrared Reflection). This additive reflects the ultraviolet rays emitted by the hot ground after sunset, so the rays are reflected to the interior of the sun and the inside temperature is kept for a longer period. An aspect that should not be overlooked by vegetable growers who want to harvest early productions to get out on the market. – the degree of transparency of the film. The more light it penetrates into the solar the faster the process of photosynthesis is, which leads to the early age and the production of qualitative productions. – the degree of diffusion – the film’s ability to change the direction of light. This should be taken into account when solar elements shade plants too much or even worse, focusing sunlight on a particular sector, which can result in burning or baking of plants too quickly, resulting in quality degradation.
6. Spread the foil to ensure uniform shading
This is even worse if the lime is mixed with oil so that it is not washed at the first rain. Lime spraying does not ensure the uniformity of shading, but destroys the UV layer of the film. The result of using lime is that the crop has uneven baking, plants no longer have UV protection, decrease transparency and diffusion of the foil. Solution: Using the shade net instead of lime. The 30-40% shading net, unlike lime, allows the entire spectrum of rays to pass, which ensures that the photosynthesis process is carried out correctly and uniformly, ensuring a higher production yield.
7. Use black pipe
Solar environment is characterized by high humidity due to natural condensation and “sweating” of plants. This is why the black pipe solariums are subject to an accelerated corrosion process. This type of construction has major drawbacks: – such a construction entails very large cancellation costs with the maintenance of the structure by priming and painting, which is often impossible to achieve due to the foil already mounted on the solar; – rust that detrives the premature foil is formed on contact with moist foil; – the black pipe becomes hotter because of the fact that the sunlight is attracted to the black color; – crops are affected by the rust produced by friction with the solar film and falling on the ground where the plants develop, polluting the soil with iron oxides that cause long-term inconvenience to plants. Solution: It is recommended to replace the black pipe with galvanized pipe, at least in the arcade, at the foil contact points.
8. Welded solar
A welded solder remains on that land for a lifetime. The disadvantage is the fact that the solarium can no longer be moved. It is advisable to move a solar plant specifically because the soil erodes in time, the essential elements of growth are absorbed by plants in 2-3 years, which leads to the use of synthetic fertilizer, plus the multiplication of pests in the soil. Although indirectly, this leads to increased use of pesticides and insects. Solution: It is recommended to use clamps to assemble the structure. Instead, an assembled solar collector is easier to mount / dismantle, thus saving time, especially in the spring when the time of mounting a solar is not very favorable.
9. The foil is attached with a wooden stick or plastic clamps
In the case of non-relocating solariums it is recommended to unravel the sun during the winter to allow the rain and snow to irrigate the soil and restore the balance of microelements to the soil. This is only possible if we do not use plastic straps or clamps to fix the foil. The guillotined bar will pierce the foil, and the mounted and dismantled clips will affect the foil by the fact that once it has been trapped and it is sure to pull the foil. The solution would be to hold C-shaped foil and corrugated wire, and to prevent foil damage, foil and wire will use 10 cm strip of foil across the length of the profile.
10. Solarium is not equipped with air recirculation system
Air recirculation can be done through ventilation hatches, which at this time represent the most affordable solution or by using air recirculation or destabilization fans. Among the advantages of this air circulation system we have: – remove moist air from the solar system by replacing it with dry air. So the air penetrates the doors or the sides of the sun and is eliminated through the ventilation hoods mounted on the ridge; – carbon dioxide-rich air streams, vital to the photosynthesis process that takes place on sunny days; – the currents are formed above the plants so that they do not harm the plants; – Early spring helps pollination of plants by spreading pollen; – Homogenizes warm air coats during spring or late autumn, when lateral ventilation can not be used.
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