| Issue Date | Title | Author(s) |
| 1994 | Changes in nutrient availability and uptake in transplanted rice under shallow and deep submergence | Anilakumar, K; Johnkutty, I; Menon, P K G; Sivakumar, C |
| 2002 | Comparison between transplanting and direct-seeding methods for crop establishment in rice | Johnkutty, I; Gracy, Mathew; Jose, Mathew |
| 1993 | Effect of forms of urea on the yield of rice | Johnkutty, I; Mathew, P B; Kumar, V R |
| 2003 | Effect of minimum tillage system on productivity of rice | Gracy, Mathew; Johnkutty, I |
| 1992 | Effect of NPK fertilizers on the availability of micronutrients in submerged laterite rice soils of Kerala | Anilakumar, K; Hassan, M A; Johnkutty, I; Menon, P K G |
| 1989 | Effect of organic sources on nitrogen availability in flooded rice soils | Anilakumar, K; Johnkutty, I; Hassan, M A; Menon, P K G |
| 1995 | Influence of biostimulants on rice productivity | Johnkutty, I; Palaniappan, S P |
| 1990 | Kinetics of silicon in relation to different levels of major nutrients in the lateritic flooded rice soils | Anilakumar, K; Johnkutty, I; Hassan, M A; Menon, P K G |
| 1993 | Kole lands of Kerala | Venugopal, V K; Johnkutty, I |
| 1993 | Long term effect of continuous fertilization by organic and inorganic sources on rice productivity | Anilakumar, K; Johnkutty, I; Kamalam Joseph |
| 1993 | Mineralisation pattern of applied urea in rice soils | Anilakumar, K; Rajaram, K P; Johnkutty, I; Jose Mathew |
| 2000 | Natural and predicted time course behaviour of ammonium nitrogen release in lowland rice soils | Johnkutty, I; Kandasamy, O S; Palaniappan, S P |
| 2000 | Relationship among leaf nitrogen content, SPAD and LCC values in rice | Johnkutty, I; Gracy Mathew; Thiyagarajan, T M; Balasubramanian, V |
| 1981 | Response of ragi (Eleusine coracana Gaertn,) to different levels of nitrogen, phosphorus and potassium under rainfed conditions | Chandrasekharan, P; Johnkutty, I |
| 1999 | Time course leaf n concentration in rice under different nitrogen application strategies and development of simulation models | Johnkutty, I; Kandasamy, O S |
| 2003 | Weed management in sugarcane (Saccharum officinarum L.) through herbicides and intercrops | Johnkutty, I; Mahadev Sarashetti, S |
