Mult-seed sowing is an ideal solution for improving soil fertility
Good example: The farmer Mr. Arunachalam in his banana field.
Fertile soil and adequate water resources, though important, cannot alone ensure a good yield. Inputs such as fertilizers and manures are essential.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/sustainable-farming-low-investment-maximum-returns
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/farmers
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/crops