Agronomic Management, Irrigation Control, and Properties of Curly kale: One of the Most Versatile Cruciferous Vegetables
Cabbage is one of the most typical and traditional crops in northern Spain. Today we’ll discuss Curly kale in detail, a direct variant of cabbage, whose consumption and production are becoming increasingly important.
What is Curly kale?
Curly kale is a vegetable that is a specific variety of cabbage, belonging to the cruciferous family. Broccoli and cauliflower also belong to this same botanical family. Due to its very high nutritional value, this type of cabbage is increasingly cultivated intensively in Spain.
Other similar vegetables in the same family include cabbage, Brussels sprouts, red cabbage, savoy cabbage, and black cabbage. The reasons for the surge in kale consumption lie in its excellent nutritional qualities: it is one of the most easily digestible and complete vegetables thanks to its high content of minerals such as calcium, iron, potassium, and magnesium, as well as vitamins C, E, A, and K. Furthermore, it is very low in calories and high in fiber, making it an essential element for maintaining a healthy diet.
It is primarily a winter vegetable and can be enjoyed in many ways: fresh in salads, cooked in traditional stews, or as a seasoning and side dish for any main course.
Curly kale Cultivation Requirements
Curly kale, like other plants in its family, demonstrates excellent adaptation to both traditional cultivation in gardens and raised beds and to intensive agricultural plantations.
Soil Characteristics
It requires loamy soils with a high organic matter content and a good percentage of available nitrogen. Enriching the soil with quality compost is highly recommended, especially at the time of transplanting.
Climate and Adaptation
It adapts optimally to cold climates; in fact, in the orchards of the Cantabrian coast, it is a common crop for year-round leafy greens due to its high resistance to low temperatures and winter frosts. In the central and southern regions of the Iberian Peninsula, its cultivation is perfectly viable provided it is supported by adequate irrigation systems, as the plant does not tolerate excessive heat or prolonged drought.
Planting and Spacing
It is advisable to sow the seeds in controlled seedbeds and then transplant the seedlings to their final location in the garden. Planting should be done in rows or raised beds, maintaining a suitable spacing adapted to the final size of the selected variety.
Irrigation Management in Curly kale
This crop requires consistently moist soil. Water is essential, especially in warm climates and intensive production projects. However, it is critical to avoid waterlogging.
Technical Control: Monitoring soil moisture with agricultural sensors is fundamental in kale cultivation. Its root system is extremely sensitive to excess water and root asphyxiation. It is especially important to monitor irrigation at the beginning of the growing cycle to ensure proper root development. Interestingly, exposure to low temperatures causes the leaves to concentrate sugars, resulting in a sweeter flavor.
Traditional Recipe: Galician Broth with Kale or Cabbage
A traditional, healthy, and comforting dish, ideal for the winter months.
Ingredients:
- 1 kg of organic kale, cabbage, or cabbage.
- 1 cup of dried white beans.
- 2 large potatoes (preferably Galician variety).
- 1 ham or beef bone and 1 soft chorizo sausage.
- 50 g of traditional lard or, if unavailable, a slice of Serrano ham.
- Sweet paprika, half a glass of extra virgin olive oil, and salt to taste.
Preparation:
- Soak the white beans overnight.
- In a regular pot or pressure cooker, cook the beans with the ham or beef bone until they begin to soften.
- Add the chopped potato, the torn kale leaves, and the fresh chorizo. Simmer until the potato begins to break down slightly and thicken the broth (approximately one hour in a regular pot or 15 minutes in a pressure cooker).
- In a separate pan, gently fry the pork fat or ham fat. When golden brown, remove from the heat, add the sweet paprika to the warmed oil to prevent burning, and then add this mixture directly to the pot.
- Let the mixture cook for an additional 10 minutes to allow the flavors to meld. This dish keeps perfectly in the refrigerator for two or three days, improving in consistency.
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