Increasing plant productivity by changing the solar spectrum

A. Novoplansky, T. Sachs, D. Cohen, R. Bar, J. Bodenheimer, R. Reisfeld

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

New greenhouse plastic covers were prepared by incorporation of fluorescent dyes into polyethylene sheets made by extrusion. These dyes convert light from the green part of the spectrum into red light. The use of these sheets as greenhouse covers increased the weight of the tomato fruit yields by 19.6% and the number of flowering branches on rose bushes by 26.7% as compared to sheets without the dye. The increased yield was primarily due to a morphogenetic response of the plants to the spectral change of the light, which enhanced the development of the desired organs. In addition, it is possible that there was an increased rate of photosynthesis.

Original languageEnglish
Pages (from-to)17-23
Number of pages7
JournalSolar Energy Materials
Volume21
Issue number1
DOIs
StatePublished - 1 Jan 1990
Externally publishedYes

ASJC Scopus subject areas

  • Engineering (all)

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