Vertical farming can be considered as an extension of indoor farming that evolved in the 1700s with the advent of greenhouses, with the primary objective of harnessing the off-season crop cultivation potential during unfavourable seasons. Vertical farming facilitates year-round cultivation in multi-storied structures using artificial illumination.
Original Source [2]
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/utilization-vertical-spaces-horticultural-crop-production-urban-and-peri-urban-areas
[2] http://www.currentscience.ac.in/Volumes/110/11/2048.pdf
[3] http://admin.indiaenvironmentportal.org.in/category/author/c-aswath
[4] http://admin.indiaenvironmentportal.org.in/category/author/g-selvakumar
[5] http://admin.indiaenvironmentportal.org.in/category/journal/current-science
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/horticulture
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/urban-agriculture
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agricultural-research
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/food-security