LED as an alternative for healing of grafted tomato transplants

Grafted tomato seedling propagation must be optimized to increase production efficiencies. Grafting has several steps that include growing, grafting, healing, and acclimation. Healing is considered the most critical step. Healing is the joining of cambium between rootstock and scion to form vascular tissue and is commonly done under modified greenhouse conditions or inside healing chambers.

Previous work determined that light during the healing period influences morphology and quality of grafted tomatoes. Cool white fluorescent (CWF) at a photosynthetic photon flux of 100 μmol·m-2·s-1 is recommended for healing chambers. Light emitting diodes (LED) make possible optimizing the spectral requirements for healing.

LumiGrow has put together a poster with more information about this. The download link can be requested here.

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