| de Macale, M.A.R. and P.L.G. Vlek. 2002. The role of Azolla
cover in improving the nitrogen use efficiency of lowland rice.
Proceedings: Second International Conference on Sustainable
Agriculture for Food, Energy and Industry. Vol. II. Pages 921-930.
Li Dajue (ed.). Institute of Botany. Chinese Academy of Science. |
|
| de Macale, M.A.R., P.L.G. Vlek and G.O San Valentin. 2002.
The Role of Azolla cover in improving the nitrogen use efficiency
of lowland rice. International Symposium on “Sustaining
Food Security and Managing Natural Resources in Southeast Asia:
Challenges for the 21st Century”. January 8 to 11, 2002.
Chiang Mai, Thailand. |
|
| Payawal, P.C. and M.A.R. de Macale. 1995. Nitrogen and phosphorous
removal from biogas effluent using Azolla hybrid, UPLB1. The
Phil. Agric. 78 (2): 175-180. |
|
| Payawal, P.C. and M.A.R. de Macale. 1994. Note: Sporulation
index of Azolla hybrids under highland and lowland conditions.
The Phil. Agric. 77 (2): 223-234. |
|
| Payawal, P.C., M.A.R. de Macale, J.S. Lales and L. Querubin.
1993. Propagation and characterization of population growth
curve of selected Azolla variants in media supplemented with
geothermal effluent. The Phil. Agric. 76 (1):73-88. |
|
| Payawal, P.C. and M.A.R. de Macale. 1992. Note: Population
growth curve of selected Azolla hybrids grown on lahar-contaminated
soils. The Phil. Agric. 74 (4):499-502. |
|
