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1.	Image from Google Jackets	Micronutrients in Hevea nutrition under Sri Lankan conditions by Yogaratnam N Perera AMA Material type: Text; Format: print ; Literary form: Not fiction Publication details: International Rubber Conference, 1985, Kuala Lumpur 1985 Availability: Not available: RRII Library: Reprints (1). Save to lists Add to cart (remove)
2.	Image from Google Jackets	A Six-criteria combine can help sustain the industry by Yogaratnam N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Rubber Asia 2004 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
3.	Image from Google Jackets	Adaptive research for rubber small holders by Yogaratnam N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Bulletin of the Rubber Research Institute of Sri Lanka 1991 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
4.	Image from Google Jackets	Address safety and health-related issues in rubber sector by Yogaratnam N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Rubber Asia 2011 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
5.	Image from Google Jackets	Analysis of intercropping systems under rubber by Wijesuria Wasana Iqbal S M M Thattil R O Yogaratnam N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Papers presented at IRRDB seminar 5-8 November 1996 Sri Lanka p28 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
6.	Image from Google Jackets	Application of nuclear techniques in soil moisture studies under rubber by Samarappuli Lalani Hettiarachchi R Karunadasa P Mitrasena U Yogaratnam N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Proceedings of the Seminar on Nuclear Techniques for better Agricultural Productivity, 1997 1997 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
7.	Image from Google Jackets	Aspects of moisture and soil conservation in rubber plantations by Samarappuli L Yogaratnam N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Proceedings of the International Rubber Conference, Colombo, 1984, V1. Part 1; p19-46Proceedings of the International Rubber Conference, Colombo, 1984, V1. Part 2; p529-543 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
8.	Image from Google Jackets	Boost smallholder sustainability through empowerment by Yogaratnam N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Rubber Asia 2010 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
9.	Image from Google Jackets	Comparison of the effectiveness of liquid and granule fertilizer mixtures on rubber plants raised by young budding technique by Dharamakeerthi R S Samarappuli Lalani Silva S N Yakandawala A Yogaratnam N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Journal of the Rubber Research Institute of Sri Lanka 1997 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
10.	Image from Google Jackets	Developments in rubber research by Yogaratnam N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Bulletin of the Rubber Research Institute of Sri Lanka 1992 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
11.	Image from Google Jackets	Economic assessment of soil and foliar based fertilizer application for mature rubber: the case of estate sector in Kegalle district by Samarappuli I N Samarappuli L Wickramaratne C S Yogaratnam N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Journal of the Rubber Research Institute of Sri Lanka 1997 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
12.	Image from Google Jackets	Economics of interplanting rubber with tea in the low country wet zone by Yogaratnam Iqbal S M M Samarappuli I N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Journal of the Rubber Research Institute of Sri Lanka 1995 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
13.	Image from Google Jackets	Effect of fertilizers on leaf composition of NPK in some Hevea cultivars by Yogaratnam N De Mel J G Material type: Text; Format: print ; Literary form: Not fiction Publication details: Journal of the Rubber Research Institute of Sri Lanka 1985 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
14.	Image from Google Jackets	Effect of mulching with rice straw on soil chemical properties and its influence on the performance of Hevea by Samarappuli Lalani Karunadasa P Mitrasena U Yogaratnam N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Journal of Rubber Research 1998 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
15.	Image from Google Jackets	Effect of potassium on growth, yield and mineral composition of young Hevea brasiliensis by Iqbal S M M Yogaratnam N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Journal of the Rubber Research Institute of Sri Lanka 1995 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
16.	Image from Google Jackets	Effect of pottasium and magnesium on growth of young Hevea brasiliensis by Weerasuriya S M Yogaratnam N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Journal of the Rubber Research Institute of Sri Lanka 1988 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
17.	Image from Google Jackets	Effect of soil moisture on establishment success of different planting techniques in rubber by Samarappuli Lalani Hettiarachchi R Yogaratnam N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Journal of the Rubber Research Institute of Sri Lanka 1993 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
18.	Image from Google Jackets	Effects of mulching with rice straw on some physical properties of soils under rubber by Samarappuli Lalani Karunadasa P Mitrasena U Yogaratnam N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Journal of Rubber Research 1999 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
19.	Image from Google Jackets	Effects of potassium and magnesium on leaf and bark nutrient contents of young Hevea brasiliensis by Weerasuriya S M Yogaratnam N Material type: Text; Format: print ; Literary form: Not fiction Publication details: Journal of the Rubber Research Institute of Sri Lanka 1989 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)
20.	Image from Google Jackets	Eppawela rock phosphate as a source of phosphorus for rubber by Yogaratnam N De Mel G Material type: Text; Format: print ; Literary form: Not fiction Publication details: Bulletin of the Rubber Research Institute of Sri Lanka 1987 Availability: Not available: RRII Library: Journals (1). Save to lists Add to cart (remove)