It lias been found that red light, directly applied causes plants to grow more rapidly, although blue light has a retarding influence.
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https://paperspast.natlib.govt.nz/newspapers/AS19340322.2.187
Bibliographic details
Auckland Star, Volume LXV, Issue 69, 22 March 1934, Page 22
Word Count
22Untitled Auckland Star, Volume LXV, Issue 69, 22 March 1934, Page 22
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Acknowledgements
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