Effect of rice-husk biochar on selected soil properties in tropical Alfisols DNV Gamage, RB Mapa, RS Dharmakeerthi, A Biswas Soil Research 54 (3), 302-310, 2016 | 95 | 2016 |
Urease activity in soils: A review RS Dharmakeerthi, MW Thenabadu Journal of the National Science Council of Sri Lanka 24, 159-195, 1996 | 88 | 1996 |
Factors contributing to changes in plant available nitrogen across a variable landscape RS Dharmakeerthi, BD Kay, EG Beauchamp Soil Science Society of America Journal 69 (2), 453-462, 2005 | 85 | 2005 |
Effect of rubber wood biochar on nutrition and growth of nursery plants of Hevea brasiliensis established in an Ultisol RS Dharmakeerthi, JAS Chandrasiri, VU Edirimanne SpringerPlus 1, 1-12, 2012 | 71 | 2012 |
Spatial variability of in‐season nitrogen uptake by corn across a variable landscape as affected by management RS Dharmakeerthi, BD Kay, EG Beauchamp Agronomy Journal 98 (2), 255-264, 2006 | 58 | 2006 |
Integrating soil and weather data to describe variability in plant available nitrogen BD Kay, AA Mahboubi, EG Beauchamp, RS Dharmakeerthi Soil Science Society of America Journal 70 (4), 1210-1221, 2006 | 55 | 2006 |
Manual of soil sampling and analysis RS Dharmakeerthi, SP Indraratne, D Kumaragamage Soil Science Society of Sri Lanka, Peradeniya, Sri Lanka, 57-61, 2007 | 54 | 2007 |
Organic carbon dynamics in soils with pyrogenic organic matter that received plant residue additions over seven years RS Dharmakeerthi, K Hanley, T Whitman, D Woolf, J Lehmann Soil Biology and Biochemistry 88, 268-274, 2015 | 36 | 2015 |
Phosphorus release from unamended and gypsum-or biochar-amended soils under simulated snowmelt and summer flooding conditions RS Dharmakeerthi, D Kumaragamage, D Goltz, SP Indraratne Journal of Environmental Quality 48, 822–830, 2019 | 22 | 2019 |
Effect of soil disturbance on N availability across a variable landscape in southern Ontario RS Dharmakeerthi, BD Kay, EG Beauchamp Soil and Tillage Research 79 (1), 101-112, 2004 | 22 | 2004 |
Effectiveness of fungal bacterial interactions as biofilmed biofertilizers on enhancement of root growth of Hevea seedlings RP Hettiarachchi, RS Dharmakeerthi, AN Jayakody, G Seneviratne, ... Journal of Environmental Professionals Sri Lanka 3 (2), 2014 | 20 | 2014 |
High C/N materials mixed with cattle manure as organic amendments to improve soil productivity and nutrient availability AA Mariaselvam, WS Dandeniya, SP Indraratne, RS Dharmkeerthi Postgraduate Institute of Agriculture, University of Peradeniya: Peradeniya, 2014 | 17 | 2014 |
Gypsum amendment reduces redox-induced phosphorous release from freshly manured, flooded soils to floodwater RS Dharmakeerthi, D Kumaragamage, SP Indraratne, D Goltz Journal of Environmental Quality 48, 127–135, 2019 | 16 | 2019 |
Carbon mineralization dynamics of organic materials and their usage in the restoration of degraded tropical tea-growing soil LRMC Liyanage, MF Sulaiman, R Ismail, GP Gunaratne, ... Agronomy 11 (6), 1191, 2021 | 11 | 2021 |
Potential for rubber (Hevea brasiliensis Muell. Arg) cultivation in the Eastern Province of Sri Lanka VHL Rodrigo, SMM Iqbal, RS Dharmakeerthi NSF. Colombo, 2011 | 10 | 2011 |
Nutritional status of rubber growing soils in the Moneragala district RS Dharmakeerthi, SN Silva, A Yakandawala, WK Jayasinghe Journal of the Rubber Research Institute of Sri Lanka 87, 23-35, 2005 | 9 | 2005 |
Design and Development of a Double-chamber Down Draft (DcDD) pyrolyzer for biochar production from rice husk A Alahakoon, AK Karunarathna, RS Dharmakeerthi, F Silva Journal of Biosystems Engineering 47 (4), 458-467, 2022 | 8 | 2022 |
Effect of stock pruning on shoot and root growth of budded polybag plants of Hevea brasiliensis. RS Dharmakeerthi, A Senevirathna, VU Edirimanne, JAS Chandrasiri | 8 | 2008 |
Adoption of eco-friendly technologies to reduce chemical fertilizer usage in paddy farming in Sri Lanka: An expert perception analysis N Chandrasiri, UK Jayasinghe-Mudalige, RS Dharmakeerthi, ... Journal of Technology and Value Addition 1 (1), 19-30, 2021 | 7 | 2021 |
Fertilizer usage and land productivity in intensively cultivated vegetable farming systems in Sri Lanka: an analysis based on a questionnaire survey HAN Upekshani, RS Dharmakeerthi, P Weerasinghe, WS Dandeniya Tropical Agricultural Research 30 (1), 44 – 55, 2018 | 7 | 2018 |