Land preparation and planting of tomatoes in greenhouses

 

Cultivation of tomato in protected environments is a process quite complex and delicate, which is performed through the correct application of a range of interventions agronomic, such as preparing soil for sowing and planting of plants, determining the density of planting, pruning, programming first fruit formation, removal of leaves, pollination, optimizing the size of the fruit, the plant training, nutrition, harvest and harvest time.

Control of microclimate in greenhouses - This control is essential to the success of the cultivation of tomatoes and carried out through manual or automated control of temperature, relative humidity and carbon dioxide.

Assigning values ​​based on these indicators is optimal lighting intensity in the greenhouse.

The temperature regime - is important in determining the production of tomato plants as temperature requirements vary depending on their phenological phases. In this regard, in the following table are presented the required temperature regime in the greenhouse.

 
Recommended temperature regime in greenhouses with tomatoes 

 Light regime - Production of tomato significantly reduced if we have limited lighting in the first phase of its cultivation. Since growth is limited by the supply of fruits with carbohydrates formed in the leaves, where as a result the amount of solar light that reaches the plants, the first priority tomato growers should be to maximize the intensity of photosynthesis of the plant cover.
It is important that most of the light that reaches the plants to be accepted by their leaves, especially those of the tip of the plant. To achieve this requires the cultivation environment and suitable planting density, in order to allow rapid growth of leaf surface.
Increased concentration up to 1000 ppm CO2, is an effective way of limiting the compensation of lighting and maximizing early production. On sunny days, without adding CO2 artificially lower the tomato plants in the greenhouse CO2 concentration of 250 ppm. For every 100 ppm CO2 artificially increase above this level (250 ppm) it is possible to increase the production potential of 2.6 kg / m². Problem is that the greenhouse with CO2 enrichment in wine is expensive if greenhouse windows are open, for the simple reason that he would leave the atmosphere.

Water regime - Requirements for water are great, though remarkable for tomatoes to water stress. Moisture in the soil should be 70-80% of its water-carrying ability, while air humidity should be 50-70%. To achieve these requirements, the plants require frequent watering, but water controlled rates.