Sementeira
Sow in a seedling tray; transplant seedlings to their final location 3 to 4 weeks later. Grow in rows, spacing plants 15 to 20 cm apart and leaving 45 to 60 cm between rows.
An elegant, high-vigour oak-leaf lettuce with upright, crisp leaves in shades of green — beautiful and productive from spring to autumn.
About the variety. Upright-growing oak-leaf variety with crisp, lance-shaped leaves weighing between 220 and 380 g. Vigorous, early-maturing and bolt-resistant, it adapts well to container growing and multiple growing seasons.
Itinerário técnico
Um guia de cultivo passo a passo, da sementeira à colheita.
Sow in a seedling tray; transplant seedlings to their final location 3 to 4 weeks later. Grow in rows, spacing plants 15 to 20 cm apart and leaving 45 to 60 cm between rows.
It is a crop that adapts well to different soil types, though good drainage capacity is essential. Soil pH should be between 5.5 and 7.
The crop prefers temperatures between 20 and 30°C; however, temperatures should not be extreme, as this will lead to premature bolting.
Compost should be incorporated into the base fertilization to meet the crop's nutritional needs. It is important that the soil contains phosphorus at the start of development; if sufficient levels are not present in the soil or through the addition of compost, a mineral fertilizer rich in this nutrient should be applied.
Watering should be frequent since the root system is not very deep. Drip irrigation is particularly suitable for lettuce cultivation, as it prevents excessive moisture on the leaves and thus the onset of diseases.
Mulching is an interesting option for lettuce cultivation, reducing competition between weeds and the crop.
Mites, aphids, leafminer larvae and root-knot nematodes are the main pests of this crop. Mites can be controlled through biological control with predatory mites, and if necessary by applying azadirachtin or sulphur powder (if T < 28°C). Aphids can be controlled through moderate fertilisation without excess nitrogen, natural limitation using hedgerows along field borders to favour beneficial insects, biological control with parasitoid and predatory Hymenoptera, and if necessary the application of potassium soap or azadirachtin. Leafminer larvae can be controlled through natural limitation using hedgerows and other vegetation with nectar-producing plants to feed adult parasitoids, biological control with parasitoid Hymenoptera, and as a supplementary measure the application of azadirachtin. Root-knot nematodes are controlled through crop rotation, biofumigation and soil solarisation.
Alternaria blight, Sclerotinia, downy mildew and grey mould are diseases affecting this crop. To control Alternaria blight, wide plant spacing and copper-based fungicides (such as Bordeaux mixture) should be used. To control Sclerotinia, appropriate crop rotations and wider spacing should be practised, and infected plants should be removed from the field as early as possible. Downy mildew can be controlled through crop rotations of at least 3 years, avoiding excess soil moisture and air humidity, using wide spacing and, if necessary, applying copper hydroxide at reduced concentrations (which should be lower the colder the weather, as it may risk scorching the leaves). Finally, grey mould should be controlled by removing the remains of diseased plants, avoiding excessive vigour, keeping water off the plants and by regularly applying bentonite clay.
Temperatures of 0°C and relative humidity above 95% are required to maximize lettuce preservation.