Sementeira
Start in trays and transplant to the final location about 6 weeks later, when the plants have 4 to 5 leaves.
The Portuguese kale par excellence, the base of the traditional caldo-verde.
About the variety. Vigorous and productive, with smooth dark green leaves; as the lower leaves are harvested from the base of the stem, the plant gains height, reaching 90–120 cm, and cropping becomes continuous. If allowed to flower, it is highly attractive to pollinators.
Itinerário técnico
Um guia de cultivo passo a passo, da sementeira à colheita.
Start in trays and transplant to the final location about 6 weeks later, when the plants have 4 to 5 leaves.
The crop prefers fertile, well-drained soils and thrives in a range of textures, from heavier to sandier types. The pH should be between 6.5 and 7.5.
Prefers locations with good sun exposure and does not tolerate excessive temperatures.
A base fertilization with compost should be carried out, bearing in mind that excess nitrogen leads to plants with lower cold resistance.
The crop requires water regularly, with neither shortage nor excess; drip irrigation is a good option.
Initially false seedbeds, in later stages mechanical weeding (with star hoe and multi-blade tiller) and mulching with organic materials are interesting options for the crop, helping to reduce competition with weeds. Plastic mulching is an interesting option, as in addition to weed control it also helps control cabbage fly.
Leaf caterpillars, cutworms and cabbage fly are the main pests of this crop. For leaf caterpillars, biological treatment with Bacillus thuringiensis is recommended, preferably with a spreader-sticker (sodium silicate, pine oil or skimmed milk powder). Cutworms are controlled by avoiding fresh manure, baiting with bran + molasses + Bacillus thuringiensis applied to the soil near the crop, Bacillus thuringiensis sprays, biological control with Steinernema carpocapsae nematodes and, if necessary, spraying with azadirachtin. Cabbage fly can be controlled by underplanting with white clover or another creeping clover, spreading sawdust or ash between plants, not leaving old cabbage stumps in the ground, removing and burning infested plants, avoiding fresh manure, and covering the soil around plants with plastic mulch.
Downy mildew, powdery mildew and black rot are three major diseases of this crop. To control downy mildew, appropriate crop rotations, wide plant spacing and avoiding water on the leaves (achieved through drip irrigation) should be used, and if necessary, copper-based fungicides applied. Powdery mildew can be controlled through wide spacing, moderate fertilisation without excess nitrogen, and the application of dusting sulphur or sulphur powder + lithothamne (1:1) as a dust, this form being less phytotoxic than pure sulphur. Black rot can be controlled by applying copper-based products.