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Research Publications - Agronomy Division
- Witharama WRG & MWN Dharmawardene, 1993. The influence of time of planting on the maturity pattern of rainfed sugarcane in Udawalawe Alfisols. Proc. Ann. Res. review, Sugarcane Research Institute, Udawalawe, Sri Lanka.
- Witharama WRG, Sangakkara UR & TM Gunawardena, 1997. A survey of weed flora in the Sevanagala sugar project area. Sri Lankan J. Agric. Sci. Vol. 34: 105-117.
- Witharama WRG, 2002. Effect of sprayer nozzles on efficacy and economy of spraying herbicide in sugarcane. Proceedings of the 58th Annual Sessions 2nd to 07th December, Part 1 - Abstracts of presentations: 27.
- Witharama WRG, 2001. Studies on crop weed competition in sugarcane, variety Co. 775. Proceedings of the 57th Annual Sessions 26 November to 01 December, Part 1 - Abstracts of presentations: 33.
- Witharama WRG, Naylor REL & GP Whytock, 1997. The seed bank and weed seedling emergence in sugarcane in Sri Lanka. Proceedings of the Brighton Crop Protection Conference - weeds: 663-664.
- Rodrigo VHL, Nugawela A, Sivanathan A, Witharama WRG & W K Jayasinghe, 2000. Rubber cum sugarcane intercropping; a suitable cropping system for farmers in the intermediate zone of Sri Lanka. Journal of the Rubber Research Institute of Sri Lanka, 83: 62-74.
- Maddumage P, Ranaweera KKD & WRG Witharama, 1998.Effect of depth of seed bury on germination and emergence of weed seedlings. Proceedings of the 54th Annual Sessions 14th to 19th December, Part 1 - Abstracts of presentations: 104.
- Witharama WRG, 2000. Association of the seed bank and emerged weeds in sugarcane in Sri Lanka. Proceedings of the 56th Annual Sessions 27th November to 01st December, Part 1 - Abstracts of presentations: 61.
- Witharama WRG, 2000 & 2001. Effect of some environmental factors on weed seedling emergence in sugarcane in Sri Lanka. Tropical Agriculturists; Journal of the Department of Agriculture-Sri Lanka, Vol. 153: 18-25.
- Witharama WRG, 1999. Restrictions on use of herbicide gesapex combi in Sri Lanka. A report presented to the annual research review meeting, Sugarcane Research Institute, Udawalawe, Sri Lanka: 19p.
- Witharama WRG, 2000. Weed control in sugarcane. A report presented to the annual research review meeting, Sugarcane Research Institute, Udawalawe, Sri Lanka: 38p.
- Witharama WRG, 2000. Fact Sheet; A quick guidance to a weed of national significance in Sri Lanka - Lantana camara L. A publication of the ministry of Forestry and Environment.
- Witharama WRG, 2000. An Alarming weed in Sri Lanka! Parthenium hysterophorus. Adversary leaflet published by the Sugarcane Research Institute of Sri Lanka, Udawalawe.
- De Silva, A.L.C. and De costa, W.A.J.M. (2004). Varietal variation in growth physiology and yield of sugarcane under two contrasting water regimes, Tropical Agricultural Research vol.16:1-12.