Dalsinghsarai, Rosera and Bhibhutipur in Samastipur have been known for their rich moong harvested around this time of the year, but the new buzzword in these areas now is inter-cropping of the pulse with sugarcane and mango orchard.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/their-finger-pulse-they-take-inter-cropping
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/seeds
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/legumes
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/horticulture
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bihar