Asparagus (Asparagus officinalis L.) is a perennial plant of the asparagus family (Asparagaceae). It is an economically quite important vegetable, from which we select young shoots. The main harvesting season in the asparagus fields is in late spring. Due to the demand for this vegetable at other times of the year, various techniques have been developed for growing asparagus out of season to meet the needs of customers. Different techniques are used all over the world, depending mainly on climatic conditions. There are well-known classic, simple techniques such as the use of protected areas, ground cover and low tunnels that can be used to encourage earlier harvesting. In some warmer areas, the technique of using benzyladenine for a later transition to dormancy or the "mother shoot" system is used, which allows year-round production. However, with this technique, the plants have a shorter life span. Very successful, but more expensive techniques for off-season cultivation are heating the soil under the asparagus shoots by various heat sources (geothermal, use of biomass). All these methods of cultivation and their combinations are successful and economically justified, because the product itself out of the main season, obtains a higher price.
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