Saha, P. (2016) “Effect of nitrogen levels and planting geometry on growth, herbage and oil yields of patchouli (Pogostemon cablin Benth.) under humid sub-tropical climate of North Eastern Himalayas”, Annals of Agricultural Research, 35(3). Available at: https://epubs.icar.org.in/index.php/AAR/article/view/44061 (Accessed: 7 June 2026).