QUALITY OF POTATO TRANSPLANTS AS AFFECTED BY CARBON DIOXIDE ENRICHMENT AND PHOTOSYNTHETIC PHOTON FLUX

Transplants quality is classified by visible and invisible indices.
In this study the quality of potato (Solanum tuberosum L. var. Dejima) transplants as affected by CO₂ concentration and photosynthetic photon flux (PPF) was examined.
Three CO₂ concentration levels of 400, 950, 1,500 µmol•mol^-1 and four PPF levels of 100, 150, 200, 250 µmol•m^-2•s^-1 were provided to produce the quality transplants of potato.
Seedling index defined as total dry weight divided by plant height of potato transplants increased with the increasing CO₂ concentration and PPF. Invisible indices as well as visible indices of potato transplant were significantly affected by CO2 enrichment and PPF. Since the potato transplants had compact and healthy growth at high CO₂ concentration and PPF, it is concluded that the quality of potato transplants could be improved at the elevated CO₂ concentration and high PPF.

VII International Symposium on Protected Cultivation in Mild Winter Climates: Production, Pest Management and Global Competition

Y.H. Kim, Y.H. Choi

Solanum tuberosum L., transplants quality, carbon dioxide concentration, seedling index, artificial lighting

https://doi.org/10.17660/ActaHortic.2004.659.33