| Issue Date | Title | Author(s) |
| 1986 | Canopy spread of and light infiltration through cassava (Manihot Esculenta Crantz) canopies | Ashokan, P K; Lalitha Bai, E K; Vikraman Nair, R |
| 1982 | Comparative performance of lesser yam | Ashokan, P K; Neelakantan Potty, N; Sudhakara, K |
| 1984 | Comparative performance of some varieties of greater yam (Dioscorea alata L.) | Ashokan, P K; Potty, N N; Nambiar, I P S |
| 1979 | Early growth and performance of six varieties of pepper in the multistoreyed cropping programme in coconut gardens | Neelakantan Potty, N; Radhakrishnan, T C; Ashokan, P K |
| 1985 | Evaluation of colocasia (Colocasia esculenta, (L) schoot) types in Kerala | Ashokan, P K; Vikraman Nair, R; Potty, N N |
| 1983 | Evaluation of sweet potato varieties in uplands of central Kerala | Ashokan, P K; Vikraman Nair, R |
| 2011 | Influence of host plant on the physiological attributes of field grown sandal (santalum album L.). | Ashokan, P K; Delphy Rocha |
| 2004 | Influence of soil moisture regimes and stage of host introduction on seedling growth of sandal provenances | Vijayakumar J Hiremath; Ashokan, P K |
| 2000 | Influence of soil moisture regimes on growth and yield in bush pepper (Piper nigrum L.) | Ashokan, P K; Thankamani, C K |
| 1998 | Nodulation behaviour of Acacia mangium wikd.in response to rhizobium inoculation | Ashokan, P K; Dhaneshkumar, P |
| 1997 | Parasitic interference of sandal (Santalum album Linn.) on common agricultural crops from the homesteads | Ashokan, P K; Saju Varghese |
| 2006 | Performance of multipurpose trees in coconut based agroforestry systems and their influence on soil physico-chemical and biological properties | Ashokan, P K; Srinivasan, K |
| 1979 | Performance of nine varieties of turmeric (Curcuma longa L.) in coconut gardens | Neelakantan Potty, N; Ashokan, P K; Radhakrishnan, T C |
| 1986 | Production potential of cassava-based cropping systems | Sreedharan, C; Ashokan, P K |
| 1988 | Productivity of tuber crops under alley cropping of tropical trees | Ashokan, P K; Bindu, R |
| 1981 | Quality characteristics of five varieties of Dioscorea alata L. | Ashokan, P K; Neelakantan Potty, N; Hassan, M A |
| 1989 | Response of rice to applied sulphur | Ashokan, P K; Sherine George |
| 2002 | Response of sandal (Santalum album Linn.) seedlings to shade and mycorrhizal association | Ashokan, P K; Binu N Kamalolbhavan |
| 1996 | Response of selected forestry and agroforestry tree seedling to water stress | Ashokan, P K; Rajesh, N |
| 1978 | Scope for using tapioca leaves as fodder | Ashokan, P K; Sreedharan, C |
