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Teal Hendrickson, Bruce L. Dunn, Carla Goad, Bizhen Hu, and Hardeep Singh

constantly recirculating nutrient solution ( Dholwani et al., 2018 ; Mohammed and Sookoo, 2016 ; Resh, 1978 ). Because hydroponics systems are generally used in greenhouses, more absolute control over environmental variables, such as temperature, is an

Free access

Toshiki Asao, Hiroaki Kitazawa, Takuya Ban, M. Habibur Rahman Pramanik, and Kenzi Tokumasa

Date, S. Terabayashi, S. Matsui, K. Namiki, T. Fujime, Y. 2002 Induction of root browning by chloramine in Lactuca sativa L. grown in hydroponics J. Jpn. Soc. Hort. Sci. 71 485 489 Feng

Open access

Hardeep Singh, Bruce Dunn, Niels Maness, Lynn Brandenberger, Lynda Carrier, and Bizhen Hu

:// > Heuvelink, E. Dorais, M. 2005 Crop growth and yield 85 144 Tomatoes doi: Jensen, M.H. 1997 Hydroponics worldwide 719 730 International Symposium on Growing Media and Hydroponics

Open access

Elisa Solis-Toapanta and Celina Gómez

; General Hydroponics, Santa Rosa, CA) provided continuous aeration. Bamboo stakes (40 cm tall) were used to provide physical support for the plants, which were secured as needed with twist ties. Plants were grown for 8 weeks inside two walk-in growth

Open access

Krishna Nemali

vegetables for Europe ( Patowary, 2013 ). Techniques such as hydroponics, soilless substrate production, mulching, and drip irrigation turned the region into what it is today ( Fig. 3 ). The region also benefits from a large labor force from nearby countries

Open access

Yu-Wei Liu and Chen-Kang Huang

( Kozai, 2007 ). Thus, unless the factories are designed to be more energy-efficient, their products are unlikely to become competitive in price. The production cost is always a concern for a plant factory operation. Hydroponics is a plant cultivation

Open access

Rhuanito Soranz Ferrarezi and Donald S. Bailey

Aquaponics is a food production technology that combines aquaculture and hydroponics in an integrated recirculating system without soil ( Rakocy et al., 2006 ). The aquaponics ecosystem is composed by fish, bacteria, and plants ( Somerville et al

Free access

Fahed A. Al-Mana and Tarik M. El-Kiey

Production of five commercial cut flowers in different culture media, namelyI nutrient film technique (NFT), soilless media (perlite and an equal mix of perlite and peatmoss), and soil mix (2 sand: 1 loam by volume), was investigated in controlled fiberglass-house. Two rose varieties (Rosa hybrida var. Baccara and Madina); carnation (Dianthus caryophyllus var. William Sim); Chrysanthemum morifolium var. Delta, and Dahlia hybrida var. variabilis were used. Plants were watered as they needed by the same nutrient solution used for NFT.

Generally, growth and yield of Baccara and Madina roses, Chrysanthemum and Dhalia plants were superior in NFT than in the other media. On the contrary, the growth and yield of carnation plants were significantly greater in conventional soil or perlite and peatmoss mix than in NFT or perlite.

Flower crops grown in NFT generally reached harvest stage 5-10 days earlier than those grown in the other media except carnation plants. There were variations in the accumulation of N, P, K mg, ca, and Fe in plant leaves among the various culture media.

Free access

Christopher S. Brown, William M. Cox, Thomas W. Dreschel, and Peter V. Chetirkin

A nutrient delivery system that may have applicability for growing plants in microgravity is described. The Vacuum-Operated Nutrient Delivery System (VONDS) draws nutrient solution across roots that are under a partial vacuum at ≈91 kPa. Bean (Phaseolus vulgaris L. cv. Blue Lake 274) plants grown on the VONDS had consistently greater leaf area and higher root, stem, leaf, and pod dry weights than plants grown under nonvacuum control conditions. This study demonstrates the potential applicability of the VONDS for growing plants in microgravity for space biology experimentation and/or crop production.