[1]
|
Anderson, J. M., & Ingram, J. S. I. (Eds.) (1993). Tropical soil biology and fertility: A handbook of methods (2nd ed.). Wallingford: CAB International.
|
[2]
|
Bekunda, M. A., Wortinann, C. S., Bwamiki, D. P., & Okwakol, M. (2000). Potentials and challenges of soils fertility management in Banana based cropping systems of Eastern Africa. In M. P. Gichuru, A. Bationo, M. A. Bekundia, et al. (Eds.), Soil fertility management in Africa: A regional perspective (pp. 123146). Nairobi: Academy Science Publishers.
|
[3]
|
Beukema, H., Stolle, F., Van Noordwijk, M., & De Foresta, H. (1997). Biodiversity in rubber agroforestry. Smallholder Rubber Agrofor estry Project, ICRAF South East Asian Regional Research Programme, Bogor.
|
[4]
|
Delabarre, M. A., & Serier J. B. (2001) Rubber. Tropical agriculturalist series. Wageningen: CTA and Macmillan.
|
[5]
|
Ellert, B. H., & Bettary, J. R. (1995). Calculation of organic matter and nutrient stored in soils under contrasting management regimes. Canadian Journal of Soil Science, 75, 529538.
doi:10.4141/cjss95075
|
[6]
|
Esekhade, T. U., & Ojiekpon, I. F. (1997). Effects and economic viability of intercropping cooking banana with rubber in Nigeria. Indian Journal of Natural Rubber Research, 10, 9196.
|
[7]
|
Esekhade, T. U. (2003). Effect of phosphorus and selected rubber based cropping systems on the early development of rubber (Hevea brasiliensis (Wild e.x.A.de Juss) mueller argoviensis) on acid soil. Ph.D. Thesis, Ibadan: University of Ibadan.
|
[8]
|
Esekhade, T. U., Okore, I. K., Ogeh, J., & Idoko, S. O. (2005). Effect of fertilizer and mulch on the growth and yield of intercropped rubber/cooking banana and soil properties. Jr. of Sust. Agric. and Envir, 7, 1020.
|
[9]
|
Fagbami, A., & Fapohunda A. (1986). Slur imagery for soil mapping and regional planning in western Nigeria. In M. J. Eden (Ed.), Remote sensing and tropical land management and parry. New York: John Wiley& Sons Ltd.
|
[10]
|
Hauser, S., Vanlauwe, B. Asawalam, D. O., & Norgrove, L. (1997) Role of earthworm in traditional and improved lowinput agricultural systems in West Africa. In: L. Brussard, et al. (Eds.), Soil ecology in sustainable agricultural systems (pp. 113136). New York: Lewis Publications.
|
[11]
|
IRSG (2000). Rubber statistical bulletin. Wembley: International Rubber Study Group.
|
[12]
|
Lydia, P. O., Teresita, I. C., & Nelson, T. B. (1999). Natural rubber: A farming option for Agrarian return communities in Mindango, Philippines. Proceeding of IRRDB Symposium. Hainan: Hainan Publishing House.
|
[13]
|
Nolte, C., KohoSame, J., Moukam, A., Thenkabai, P. S. Weise, S. F., Woomer, P. L. & Zapfack L. (2001). Landuse characterization and estimate of carbon stock in the alternative to slashandburn bench mark areas in Cameroon. IITA Resources and Crop Management Research Monograph No. 28, 921.
|
[14]
|
Noordwijr, M. V. (2002). Nutrient cycling in ecosystem and nutrient flows in agro ecosystem. Newsletter on Soil Fertility and Fallow Management in the Up/and Tropics No. 2.
|
[15]
|
Page, A. L., Miller, R. H., & Keeney, D. R. (1982). Methods of soil analysis part 2: Chemical and microbial properties. Madison: American Society of Agronomy, Inc.
|
[16]
|
Rao, P. S., Saraswathyamma, C. K., & Sethuraji, M. R. (1998). Studies on the relationship between yield and meteorological parameters of Para rubber tree (Hevea brasiliensis). Agricultural and Forest Meteorology, 90, 235245.
|
[17]
|
Rodrigo, V. H. L., Stirling, C. M., Teklehaimanot, Z., & Nugwale, A. (1997). Effect of planting density on growth and development of component crops in rubber/banana intercropping system. Field Crop Research, 52, 95108 doi:10.1016/S03784290(96)010696
|
[18]
|
Rodrigo, V. H. L. Stirling, C. M., Teklehaimanot, Z., & Nugwale, A. (2001). Intercropping with banana to improve fractional interception and radiationuse efficiency of immature rubber plantation. Field Crop Research, 69, 237249. doi:10.1016/S03784290(00)001477
|
[19]
|
Senevirathan, A. M. W. K., Stirling. C. M., & Rodrigo, V. H. L. (2003). Growth, Photosynthetic performance and shade adaptation of rubber (Hevea brasiliensis) growth in natural shade. Tree Physiology, 23, 701712.
|
[20]
|
Vonuekull, H. R., & Mutert, E. (1995). Global extent, development and economic impact of acid soils. Plant and Soil, 171, 115.
doi:10.1007/BF00009558
|
[21]
|
Wilson, K. C. (1985). Mineral and fertilizer needs. In M. N. Clifford, & K. C.Wilson (Eds.), Coffee: Botany, biochemistry and production of beans and Beverage. London: Croom Helm Ltd.
|
[22]
|
Woomer, D. L. Bekunda, M. A., & Nkalubo, S. T. (1998) Site characterization for organic resource transfer studies: The century model approach. African Crop Science Journal, 6, 205214.
|
[23]
|
Zainol, A. E, Mannual, W., & Suden, M. N ( 1993). Effect of intercropping systems on surface processes in acid ultisols: Changes in soil chemical properties and their influence on crop performance. Journal of Natural Rubber Research, 8, 124136.
|