Good to know!

Most frequent strawberry diseases:

Strawberry noble rot

This fungus attacks, most of all, fruits and flowers. The flowers attacked turn brown and wither and rotting spots appear on the fruits. A grey, dusty layer of conidia develops in the place attacked. The development of the disease is favoured by humid and warm weather.

Strawberry common leaf spot

The initial symptoms are small, brown spots which, as they grow, turn grey white and are encircled by a red and brown border. They appear mainly on leaves and calyx sepals, which wither when strongly attacked. Sometimes, especially under cover, the symptoms may also appear on fruits (dry, small spots around the seeds attacked).

Strawberry leaf scorch

Its symptoms – in the form of numerous small, brown spots – appear, most of all, on leaves and calyx sepals. The symptoms are first seen on older leaves. The leaves attacked turn yellow and red and quickly wither.

Strawberry Verticillium wilt: The symptoms appear most frequently on annual plants. Initially, the oldest, outer leaves wilt and die, followed by the whole plant. The mass death of plants is usually observed after a susceptible strawberry variety is planted in a strongly infected field (sites on which vegetables, potatoes or strawberries have been previously cultivated). The fungus attacks roots, from where it grows into the crown and petioles, which results in a dry, well visible necrosis of their base.

Strawberry powdery mildew

It creates a white, flour-like layer that appears most prominently on the lower side of leaves, which roll upwards in a distinct manner into a boat-like shape. The layer of mycelium and conidia may also cover other above-ground organs of the plant. Strongly attacked leaves experience the formation of extensive necroses and, sometimes, red and brown spots, well visible on the upper side of a leaf. Mildew appears with particular frequency in plants cultivated under cover and on cuttings on mother plantations.

Strawberry Colletotrichum crown rot

This fungus attacks all of the above-ground organs of the plant. The disease has been observed to occur with a much greater frequency during hot and humid summers. On a plant attacked dry, dark brown necroses are formed, on which (in humid conditions) light pink concentrations of conidia are visible. An attack on the strawberry crown, on which a dry, light brown rot develops, results in a rapid death of the plants.

Description of the varieties


Korona      

Kimberly® 

Vima® Zanta  

Asia          

Elianny           

Polka     

Roxana     

Elsanta       

Senga Sengana    

Mieze Schindler 

Elegance 


Korona*

Origin: A Dutch cultivar, a cross between Tamella x Induka.

Plant: Its growth is from moderately strong to strong, the habit is slightly raised, moderately compact; the flowers are situated below leaves.

Fruits: From medium-sized to large, heart-shaped, but slightly elongated; slightly shiny epidermis, of intensive red and uniform color on the entire surface. Orange and red flesh, aromatic with large amount of juice, tasty.

Harvest season: It ripens 3-6 days before Senga Sengana.

Application: It can be cultivated both on commodity plantations and allotments.

Strengths: The cultivar is very fertile, insensitive to bruises. It has low soil requirements. Resistance to frostbites is very high.

Weaknesses: It is susceptible to gray mold and white leaf spots.

*Licensed varieties, which cannot be reproduced or sold, and pursuant to the new law - multiplied for personal use.


Kimberly*

Origin: A Dutch cultivar from Konings Plants, it is a cross between two varieties: Gorella x Handler.

Plant: The plant is characterized by intensive growth.

Fruits: Very big, tasty, do not have a tendency to cracking, of moderate firmness.

Harvest season: It ripens around 5 days before Elsanta.

Application: This cultivar is well suited for our climate, it is resistant to high temperature fluctuations in winter.

Strengths: This cultivar is perfect both for cultivation in soil and in tunnels. Very high percentage of 1st class fruits. It reacts very well to accelerated fruiting.

Weaknesses: Soaking the plants in a fungicide solution before planting lowers the risk of occurrence of root system diseases.

*Licensed varieties, which cannot be reproduced or sold, and pursuant to the new law - multiplied for personal use.


Vima® Zanta*

Origin: A Dutch cultivar from Vissers Aardbeiplanten America; a cross between Elsanta x Korona.

Plant: Characterized by stable growth, quite lush, with a folded leaf, which is characteristic of this cultivar.

Fruits: Medium size, with a broad conical shape and truncated cone, quite regular in shape. The color of epidermis is pale red with a slight shine. The flesh is pale pink and light red. The fruits are firm, juicy and aromatic.

Harvest season: Fruits are harvested at the same time as Elsanta.

Application: It can be cultivated both on commodity plantations and allotments.

Strengths: Fruits are quite big and endure transportation very well. The cultivar is easy to harvest. It is characterized by high resistance to Verticillium.

Weaknesses: It shows slight susceptibility to fungi that cause strawberry leaf spots and to powdery mildew.

*Licensed varieties, which cannot be reproduced or sold, and pursuant to the new law - multiplied for personal use.


Asia

Although Asia is tolerant against most common root-diseases, the variety is somewhat susceptible against Mildew and Black-spot.

the fruits are large, somewhat carved, juicy, bright red with a bit of a neck under the calyx. Its shelf life and taste is good.

Asia is a high yielding variety and can be used in several growing systems, especially suitable for table-top systems.

Asia is easy to pick.


Elianny*

Origin: A Dutch cultivar from Konings/Vissers, developed in 1998 and since then it has been tested and improved for many years.

Plant: The plant is characterized by strong growth, it is healthy.

Fruits: A large fruit, with a broad conical shape. The flesh is sweet, juicy and aromatic. The epidermis color is bright red and slightly shiny. Fruit is firm and very tasty.

Harvest season: It ripens 3-4 days before Elsanta.

Application: The cultivar can be grown in our climate.

Strengths: High percentage of 1st class fruit. Undemanding soil requirements. The fruits endure transportation and a few-day storage very well. Thanks to high firmness of the fruits, they are rarely attacked by gray mold.

Weaknesses: Fertility equal to around 70% of the Elsanta cultivar.

*Licensed varieties, which cannot be reproduced or sold, and pursuant to the new law - multiplied for personal use.


Polka*

Origin: A Dutch cultivar.

Plant: Its habit and fruits are similar to Senga Sengany.

Fruits: First fruits are huge, the following ones are big and medium-sized. It is very tasty and sweet.

Harvest season: Late midseason.

Application: A leading variety both in desserts as well as the industry, grown in a climate characterized by harsh changes (Scandinavia). In Poland it is more and more often grown instead of Senga Sengana. It is recommended in eco-farming.

Strengths: A fertile cultivar. Frost-resistant. Less sensitive to gray mold than Senga Sengana.

Weaknesses: Mold impact is slight, the leaves are sensitive to powdery mildew and root system diseases.

*Licensed varieties, which cannot be reproduced or sold, and pursuant to the new law - multiplied for personal use.


Roxana*

Origin: A New Fruits cultivar (Italy)

Plant: Low environmental requirements, very strong, very productive, resistant to low, winter temperatures.

Fruits: Very large with very attractive appearance, conical and long shape, with medium hard consistence, red shiny color and good merchantability.

Harvest season: 10 days after the Alba cultivar.

Application: It can be both cultivated under shelters and in arable farming. It is also perfect for soilless cultivation.

Strengths: Guarantee of very abundant crops, beautiful, very big fruits, high productivity, good merchantability properties of fruits. This cultivar is resistant to root system diseases and mildew.

Weaknesses: It is characterized by slight susceptibility to anthracnose.

*Licensed varieties, which cannot be reproduced or sold, and pursuant to the new law - multiplied for personal use.


Elsanta*

Origin: A Dutch cultivar, developed in 1981 from a cross between ‘Gorella’ and

‘Holiday’.

Plant: It is characterized by a moderately intensive growth, while on fertile and humid ground its growth is strong. Its habit is raised, quite loose. The leaves are medium sized and long with deep serration, light green, rolled upwards along the middle vein, highly corrugated, quite shiny. The flowers are located at the leaf height, they are large and androgynous.

Fruits: Medium-sized and large, from broad conical to conical shape. Their epidermis is light red with a strong shine, often with a paler or even green color on top of the first fruits. The flesh is from pale pink to light red, quite uniform on a cross-section, juicy, very tasty with a wild strawberry aroma.

Harvest season: This cultivar ripens in a midseason. First strawberries are collected 3-5 days before Senga Sengana.

Application: Elsanta is the best cultivar for controlled cultivation in soil and under shelters.

Strengths: It is a cultivar particularly for desserts, its fruits can endure transportation very well, it loses attractiveness only a little, even after a few-day storage.

Weaknesses: Elsanta is very sensitive to powdery mildew that affects strawberries and susceptible to root system diseases.

*Licensed varieties, which cannot be reproduced or sold, and pursuant to the new law - multiplied for personal use.

 


Senga Sengana

Origin: A German cultivar, grown since 1954.

Plant: It is a perennial plant with compact habit and intense growth. Medium-sized or large, with dark green laminas, smooth and shiny, with widely double-serrated edges. The leaf petiole is long and stiff. This cultivar has a characteristic abundant leafage. The inflorescence stalks are the same length as leaf petioles or shorter, very hairy, bending under the weight of fruits.

Fruits: Fruits that ripen first are large (around 7.5 g) then medium-sized and at the end of fruiting, the fruits are small. They have a broad conical, heart-shape or round kidney-like shape. The color is dark red, uniform on the entire surface. The achenes are yellow, settled in shallow hollows. The flesh is dark red, compact, slightly tart, tasty and very aromatic. Separating the calyx from the fruit is very hard.

Harvest season: It ripens in late midseason, 7-10 days after Kama.

Application: A basic industrial and food processing cultivar, used also for frozen products.

Strengths: Fertile, resistant to drought and low temperature. Fruits are very resistant to root system diseases (Verticillium) and soil-dwelling nematodes. It is particularly valued in the industry for its wonderful aroma.

Weaknesses: Fruits are very sensitive to rotting caused by gray mold. The plants are sensitive to white leaf spots. The fruits poorly endure long transportation. A flaw of the fruits is their firmness and long shelf life.


Mieze Schindler

Origin: German cultivar, cultivated since 1925.

Plant: The plants are characterized by moderate growth intensity and have loose habit.

Fruits: Fruits are small, dark red and soft. They resemble raspberries.

Application: The cultivar is used in food processing. It is ideal for jams.

Strengths: A perfect strawberry-raspberry flavor.

Weaknesses: A soft fruit, perishable. Fruits must be collected on a daily basis and sold shortly after harvesting.