Kayaroganam P, Chan W.H. and Ong T.S. 1987. Preliminary observations of dryness incidence in Hevea clones PB260 and PB235. Pahang Planting Association Annual Journal : 41-47

Ong T.S. 1987. Refinement on young budding technique in rubber. Presented at 1987 TPSB Managers Seminar.

Ong T.S. 1988. Corynespora leaf fall disease of Hevea. Paper for TPSB/AAR meeting held on 7 June.

Ong T.S. 1989. Status report of tree dryness survey by AARSB. Presented at IRRDB Workshop on tree dryness – 26-27 June.

Ong T.S. 1989. Further results of cutback height trial in young budding nursery and proposed production schedule for future budding nurseries. Presented at TPSB/AAR meeting on 6 July.

Ong T.S. 1991. Sulphur dusting to control Oidium SLF in rubber estates with knapsack duster. Annual Report. Pahang Planters Assoc.

Ong T.S. 1992. AAR’s experience in sulphur dusting with motorised knapsack duster. Presented at RRIM Colloquium on 12 December.

Ong T.S. 1995. AAR observations and experience in leaf disease control of rubber. Talk delivered at MRPC-AC/RRIM Interactive Meeting at Cinta Sayang Sg. Petani on 23 November.

Ong T.S., Chan W.H. and Heh W.Y. 1997. Towards maximum growth of young rubber with improved planting materials and agronomic practices. Proc. International Planters’ Conference on Plantation Management for the 21st century. Incorporated Society of Planters, Kuala Lumpur : 323-338

Ong T.S. and Chan W.H. 1998. Selection of rubber clones for future replanting-RRIM 2000 series (1st and 2nd Selection) TPSB Managers Conference, Awana, GentingHighlands.

Ooi L.H. and Chew P.S. 1985. The performance of some Malayan Dwarf x Tall coconut hybrids and local coconut varieties on marine clay soil in Peninsular Malaysia.Oleagineux 40(7) : 373-383.

Ooi L.H. and Chew P.S. 1986. Present status and prospects for coconuts. In : Ti T.C. and Yee W. (eds). Proc. IDS Seminar on Revitalization of Industrial Crop Investments in Sabah. Institute for Development Studies (Sabah) : 95-112.

Teoh K.C., Chan K.S. and Chew P.S. 1986. Dry matter and nutrient composition in hybrid coconuts (MAWA) and cocoa on coastal clay soils. Proc. International Conference on cocoa and coconuts : Progress and Outlook. Incorporated Society of Planters, Kuala Lumpur : 819 835.

Teoh K.C., Chan W.H. and Ooi L.H. 1987. Effect of palm oil sludge cake on early growth of newly planted oil palm, rubber and cocoa in the field. The Planter. Incorporated Society of Planters, Kuala Lumpur 62 : 368-382.

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Chan W.H. 1984. A review of RRIM600 in a large group of rubber estates in Peninsular Malaysia. The Planter. Incorporated Society of Planters, Kuala Lumpur : 60, 95-110.

Chan W.H. 1985. A speculative look at an extended productive life cycle for hevea. The Planter. Incorporated Society of Planters, Kuala Lumpur : 61, 249-261.

Chan W.H. 1989. Commercial performance of clones planted in the last 15 years in a large group of rubber estates. Proc. RRIM Rubber Growers’ Conference : 36-52

Chan W.H. 1989. Field experience of controlled pruning in immature rubber. Selangor Planters’ Association Annual Journal/Report : 74-91

Chan W.H. 1992. Patent on Rainguard. March ‘92

Chan W.H. 1992. Patent on Jacket System April ‘92

Chan W.H. 1993. Further results of AAR jacket system. Presented at TPSB Assistants Conference on 9/1/93.

Chan W.H. 1995. AAR Jacket System. Proc. RISDA National Conference.

Chan W.H. 1996. Survey of tree dryness on panels BO-1 and BO-2 of clone PB260 in a large group of rubber estates. The Planter. Incorporated Society of Planters, Kuala Lumpur : 72, 55-65.

Chan W.H.. 1997. Performance of clone PB260 in a large Plantation Group in Peninsular Malaysia. The Planter. Incorporated Society of Planters, Kuala Lumpur : 73, 403-418.

Chan W.H. 1997. A Brief History of Natural Rubber in Malaysia. Taiko Newsletter.

Chan W.H. 2004. Manuring in rubber : need for re-evaluation based on case study. The Planter. Incorporated Society of Planters, Kuala Lumpur 80 (942) : 551-560.

Chan W.H. 2004. Early growth and secondary characteristics of RRIM200 series clones in trial and commercial plantings. Presented at International Conference on Natural Rubber Industry : Responding to Globalization. Rubber Research and Development Board, Kuala Lumpur. Preprint.

Chan W.H. 2005. Use of short cuts to extend lifespan of PB260. Preprints of papers International Natural Rubber Conference : opportunities and trends in natural rubber production. Rubber Research Institute of India : 311-319.

Chan W.H. 2005.New perspective for rubber planting in a large plantation group.Proc. Rubber Planters’ Conference 2005 : 46-57.

Chan W.H. 2006. Short cuts on basal and high level virgin bark. Preprints of Papers International Natural Rubber Conference. IRRDB and Rubber Research Institute of Vietnam : 16-23. Revised version in the Planter. Incorporated Society of Planters, Kuala Lumpur 83 (973) : 253-261.

Chan W.H. 2006. New perspective in rubber cultivation. Presented at Rubber Markets, Singapore.

Chan W.H. 2007. Growth and early yield of RRIM2000 series clones in trial and commercial plantings.Proc.International Rubber Conference.IRRDB : 243-252.

Chan W.H. 2009. Re-evaluation of controlled pruning in young rubber in a large group of estates.The Planter. Incorporated Society of Planters, Kuala Lumpur : Vol.85(995) 79-87.

Chan W.H. and McQuistan J.G. 1986.Preliminary observations of Paclobutrazol on Immature Rubber.Annual Report.Negeri Sembilan Planters Association.

Chan W.H. and Teoh K.S. 1986. Early results of PP333 (Cultar) trials on young rubber. ICI Workshop on Cultar, Malacca.

Chan W.H., Ho J. P., Choo I.F., David O., Lim J.K. and Laili D. 1987. Further puncture tapping trial results in Hevea. Proc. RRIM Planters Conference : 207-224

Chan W.H. and Rahman O. 1990.Evaluation of 3 types of rainguards.The Planter. Incorporated Society of Planters, Kuala Lumpur 66 : 523-535.

Chan W.H., Wong C.P. and Wong C.C. 1991. Control of White Root Disease in immature rubber with 3 systemic fungicides.The Planter. Incorporated Society of Planters, Kuala Lumpur 62 : 251-265.

Chan W.H. and Ong T.S. 1992. AAR jacket system : a promising improved system of extracting latex from rubber trees. The Planter. Incorporated Society of Planters,Kuala Lumpur, 68 : 587-596

Chan W.H. and Ong T.S. 1994. Prospective solutions to current problems in hevea exploitation in a large group of estates. Proc. International Planters’ Conference. Incorporated Society of Planters, Kuala Lumpur : 337-349.

Chan W.H. and Ong T.S. 1995. Current status of trials on AAR jacket system of exploitation in rubber. Proc. RRIM Growers’ Conference. Kuala Lumpur 135-144

Chan W.H. and Goh K.J. 1997. A Short note on effective advisory service in the private sector. ISOPA Newsletter Vol 6:1-3

Chan W.H. and Ong T.S. 2000. Enhancing sustainability of rubber plantations in P. Malaysia. MEOA Seminar on Survival of the Rubber Industry. RRIM, Sungei Buloh.

Chan W.H., Tan K.S. and Ong T.S. 2004. Early growth and secondary characteristics of RRIM 2000 series clones in a large plantation group. The Planter. Incorporated Society of Planters, Kuala Lumpur 79 (926) : 295-307.

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