Strawberry, whose name comes from Latin Fragas, is a rosacea of the genus Fragaria whose species are found throughout temperate and subtropical zones. The currently cultivated large-fruited strawberry has been recognized as a hybrid of F. virginiana y chiloensis, and is botanically designated as the species Fragaria X pineapples Shower. (Branzanti, 1985).
Traditionally, strawberry cultivation has been multi-annual. Nowadays, and especially after the introduction of plant-based cultivation, fridge, The duration of the crop is set at one year, after which the harvest is lifted (Maroto and López, 1988).
Two types of plants can be used for strawberry planting:
- Fresh plant: From the nursery, they are taken to the planting site from late October or early November, when the plant has begun to enter dormancy. Due to the mild climate, the plants develop during the winter, with production beginning in February, which increases in the following months. This type of strawberry plantation is suitable in warm areas with a mild winter, making it the ideal choice. system used mainly in Huelva.
- Cold storage plant: It is removed from the nursery in winter when it enters dormancy, then stored in cold storage at 1 or 2ºC below zero until summer planting in July or August. This planting system, although it involves higher costs as the transplant date is brought forward to the summer months,, It allows for greater plant development before entering the winter vegetative dormancy, greater floral induction and therefore higher production. It is the system used mainly on the Mediterranean coast.
Generally, fresh plants produced in nurseries are uprooted, transported to a warehouse, handled to remove leaves and sort them, grouped into bunches, bagged, stored in cold storage, and transported to the production areas. This process is usually completed within 24-48 hours to prevent excessive root desiccation and minimize the incidence of disease. However, the plants lose some of their roots and must regrow new ones after transplanting, which affects the level of accumulated reserves, especially starch, since most of it is stored in the root system.
During autumn, strawberry plants subjected to short photoperiods and low temperatures (<7°C) for a period of 4 to 6 weeks, varying depending on the cultivar, enter a period of vegetative dormancy (Durner et al., 1986). In this state, the plants are much more resistant to winter conditions, specifically frost and waterlogging. This vegetative dormancy is necessary for strawberry plants, particularly fresh plants, to better withstand the conditions of transplanting itself (mainly uprooting, handling and transport). Furthermore, during this period, plant reserves in the crown and roots increase, improving plant vigor after planting, early production, fruit size and total production (Voth, 1989).
After transplanting, strawberry plants must sprout new roots, and leaf development begins more or less rapidly depending on the surrounding temperature. High temperatures allow for rapid development of the plant's vegetative system, also beginning flowering. Some authors have shown that under these conditions, the processes of new root formation and the development of leaves and flower clusters overlap, resulting in a significant reduction in fruit size (Maroto et al., 1996).
On the other hand, if the temperature is not high, the plant still has a relatively long period to produce the new root system and begin the new period of floral induction that takes place after planting in the final soil.
Therefore, one of the most critical and determining phases for success in a strawberry plantation is the transplant, where the plant has to cope with the formation of new roots and the emission of leaves and flower bouquets, with a reserve level partially limited.
For this reason, from the technical department of Cultivator We would like to make the following recommendation, not only to help the plant overcome post-transplant stress, but also to improve its immune system and strengthen it against possible pathologies that could be related to this cultivation phase.
MICROVITAL – L
It is a liquid formulation of organic molecules of plant origin with magnesium and micro elements, which positively influences the physical-chemical parameters from the ground in addition to improve the microbiota of the same. Thanks to the flavonoid complexes and molecules it formulates, it improves the metabolic activity of plants, enhancing the formation of new roots and absorbent hairs; they participate in important functions, such as protecting you from the harmful effects of UV radiation and exerting effective Antioxidant activity and have iron and other transition metal removing properties. In addition, it helps to prevent states deficiency of magnesium, boron, manganese and zinc.
SPIRALIS Long Life
It is a liquid formulation based on complexes of selected organic acids and peptides, related to green and red algae, which enhance the effect bioprotector against various abiotic stress factors. A inducer of natural defenses of plants (phytoalexins and PR proteins), thus enhancing the synthesis of endogenous molecules, with high defensive capacity and with systemicity, both ascending and descending, which makes It can be applied both foliarly and radicularly. The synthesized endogenous defensive molecules induce structural changes in cell walls of the plants at their level lignification, thus constituting a physical barrier against abiotic stress.
