This method differs from true hydroponics (nutrient film technique and deep water culture) in that a soilless substrate is used to support the root system and provide a higher degree of aeration. Vine crops such as cucumbers, tomatoes, and peppers are often grown in substrate-based systems. Layflat poly bags filled with perlite (upper left) dutch bucket system filled with perlite (upper right) 3-gallon nursery pots filled with aged pine bark (lower left) and Rockwool seedling blocks used on perlite- filled containers (lower right). Irrigate seedlings with plain water until true leaves have emerged, then switch to a half-strength fertilizer solution (50-100 ppm N). Seeds can be started in a 50-cell (11′′x22′′) or larger nursery flat using a peat-based potting mix. Starting cucumbers in flats from seed before transplanting them into the production system saves valuable time and production space in the greenhouse. For a fall crop, seeds are started in July, transplanted in August, and harvested from September to December.
However, In the southeastern United States, temperatures typically exceed ideal growth conditions by July, and the spring planted crop is removed. The harvest interval of a spring crop can extend past 12 weeks, depending on greenhouse temperatures. A spring crop can be seeded in December for January transplanting and harvested from February to July. An ideal crop timing has not yet been established in Alabama however, research trials show that two crop cycles per year are an efficient model. Cucumbers perform somewhat better than tomatoes in extreme summer temperatures however, yield can suffer in the winter with low light levels and conservative heating strategies. This fast turnover time allows for great flexibility in crop cycles. Due to the absence of a fertilized ovule in the fruit, these cucumbers have no seeds and are marketed as “seedless.”Ĭucumbers are typically tolerant of extreme summer temperatures and are considered a fast crop with the first harvest ready within as little as 7 weeks from seeding. Both types are parthenocarpic, meaning they produce fruit without flower fertilization and do not require pollination. English and Beit Alpha are the two primary cucumber types grown in greenhouses. Learn the basics of greenhouse cucumber production, including seeding production training, pruning, and spacing the greenhouse environment fertilization and irrigation and harvesting and fruit quality.Ĭucumbers are a popular crop for greenhouse vegetable production.
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