-
2
-
-
0001545693
-
-
In K.J. Beek et al. (ed.) Quantified land evaluation procedures. ITC Publ. 6. Int. Inst, for Aerospace Surv. and Earth Sci., Enschede, the Netherlands.
-
Bouma, J., and H.A.J. Van Lanen. 1987. Transfer functions and threshold values: From soil characteristics to land qualities, p. 106-110. In K.J. Beek et al. (ed.) Quantified land evaluation procedures. ITC Publ. 6. Int. Inst, for Aerospace Surv. and Earth Sci., Enschede, the Netherlands.
-
(1987)
Transfer functions and threshold values: From soil characteristics to land qualities
, pp. 106-110
-
-
Bouma, J.1
Van Lanen, H.A.J.2
-
3
-
-
0027754506
-
Soil and crop growth micro-variability in the West African semi-arid tropics: A possible risk-reducing factor for subsistence farmers
-
Brouwer, J., L.K. Fussell, and L. Herrmann. 1993. Soil and crop growth micro-variability in the West African semi-arid tropics: A possible risk-reducing factor for subsistence farmers. Agric. Ecosyst. Environ. 45:229-238.
-
(1993)
Agric. Ecosyst. Environ
, vol.45
, pp. 229-238
-
-
Brouwer, J.1
Fussell, L.K.2
Herrmann, L.3
-
4
-
-
0028972172
-
Spatial variability in soil fertility management and crop response in Mutoko Communal Area, Zimbabwe
-
Carter, S.E., and H.K. Murwira. 1995. Spatial variability in soil fertility management and crop response in Mutoko Communal Area, Zimbabwe. Ambio 24:77-84.
-
(1995)
Ambio
, vol.24
, pp. 77-84
-
-
Carter, S.E.1
Murwira, H.K.2
-
5
-
-
0032420972
-
-
Smaling (ed.) Nutrient flows and balances as indicators of productivity and sustainability in sub-Saharan African agro-ecosystems. Agric. Ecosyst. Environ, (in press)
-
Defoer, T, H. de Groote, T. Hilhorst, S. Kante, and A. Budelman. 1998. Participatory action research and quantitative analysis for nutrient management in Southern Mali: A fruitful marriage? In E.M.A. Smaling (ed.) Nutrient flows and balances as indicators of productivity and sustainability in sub-Saharan African agro-ecosystems. Agric. Ecosyst. Environ, (in press).
-
(1998)
Participatory action research and quantitative analysis for nutrient management in Southern Mali: A fruitful marriage? In E.M.A
-
-
Defoer, T.1
de Groote, H.2
Hilhorst, T.3
Kante, S.4
Budelman, A.5
-
7
-
-
85102669327
-
-
In E.M.A. Smaling (ed.) Nutrient flows and balances as indicators of productivity and sustainability in sub-Saharan African agro-ecosystems. Agric. Ecosyst. Environ, (in press)
-
Elias, E., S. Morse, and D.G.R. Belshaw. 1998. The nitrogen and phosphorus balances of some Kindo Koisha farms in southern Ethiopia. In E.M.A. Smaling (ed.) Nutrient flows and balances as indicators of productivity and sustainability in sub-Saharan African agro-ecosystems. Agric. Ecosyst. Environ, (in press).
-
(1998)
The nitrogen and phosphorus balances of some Kindo Koisha farms in southern Ethiopia
-
-
Elias, E.1
Morse, S.2
Belshaw, D.G.R.3
-
9
-
-
0004326742
-
-
Africa. United Nations Educ, Scientific and Cultural Organ., Paris
-
FAO/UNESCO. 1977. FAO-UNESCO soil map of the world, 1: 5 000 000. Vol. 6. Africa. United Nations Educ, Scientific and Cultural Organ., Paris.
-
(1977)
FAO-UNESCO soil map of the world, 1: 5 000 000
, vol.6
-
-
-
10
-
-
0004057255
-
-
Ministère de la Cooperation et CIRAD-IRAT, Montpellier, France
-
Pieri, C. 1989. Fertilité des terres de savanes. Ministère de la Cooperation et CIRAD-IRAT, Montpellier, France.
-
(1989)
Fertilité des terres de savanes
-
-
Pieri, C.1
-
11
-
-
0003867592
-
-
World Bank Dis. Pap. 315. World Bank, Washington, DC
-
Pieri, C, J. Dumanski, A. Hamblin, and A. Young. 1995. Land quality indicators. World Bank Dis. Pap. 315. World Bank, Washington, DC.
-
(1995)
Land quality indicators
-
-
Pieri, C.1
Dumanski, J.2
Hamblin, A.3
Young, A.4
-
12
-
-
0027330766
-
Ring management of soils and crops in the West African semi-arid tropics: The case of the mossi farming system in Burkina Faso
-
Prudencio, C.Y. 1993. Ring management of soils and crops in the West African semi-arid tropics: The case of the mossi farming system in Burkina Faso. Agric. Ecosyst. Environ. 47:237-264.
-
(1993)
Agric. Ecosyst. Environ
, vol.47
, pp. 237-264
-
-
Prudencio, C.Y.1
-
13
-
-
0030439926
-
-
Indigenous soil and water conservation in Africa. Earthscan Publ., London
-
Rey, C, I. Scoones, and C. Toulmin. 1996. Sustaining the soil. Indigenous soil and water conservation in Africa. Earthscan Publ., London.
-
(1996)
Sustaining the soil
-
-
Rey, C.1
Scoones, I.2
Toulmin, C.3
-
14
-
-
0032439762
-
-
Smaling (ed.) Nutrient flows and balances as indicators of productivity and sustainability in sub-Saharan African agro-ecosystems. Agric. Ecosyst. Environ, (in press)
-
Scoones, I., and C. Toulmin. 1998. Soil nutrient balances: What use for policy? In E.M.A. Smaling (ed.) Nutrient flows and balances as indicators of productivity and sustainability in sub-Saharan African agro-ecosystems. Agric. Ecosyst. Environ, (in press).
-
(1998)
Soil nutrient balances: What use for policy? In E.M.A
-
-
Scoones, I.1
Toulmin, C.2
-
17
-
-
0029749830
-
Soil fertility research in sub-Saharan Africa: New dimensions, new challenges
-
Smaling, E.M.A., and A.R. Braun. 1996. Soil fertility research in sub-Saharan Africa: New dimensions, new challenges. Commun. Soil Sci. Plant Anal. 27:365-386.
-
(1996)
Commun. Soil Sci. Plant Anal
, vol.27
, pp. 365-386
-
-
Smaling, E.M.A.1
Braun, A.R.2
-
18
-
-
0027713862
-
A decision-support model for monitoring nutrient balances under agricultural land use (NUTMON)
-
Smaling, E.M.A., and L.O. Fresco. 1993. A decision-support model for monitoring nutrient balances under agricultural land use (NUTMON). Geoderma 60:235-256.
-
(1993)
Geoderma
, vol.60
, pp. 235-256
-
-
Smaling, E.M.A.1
Fresco, L.O.2
-
19
-
-
0030301228
-
Classifying, monitoring and improving soil nutrient stocks and flows in African agriculture
-
Smaling, E.M.A., L.O. Fresco, and A. de Jager. 1996. Classifying, monitoring and improving soil nutrient stocks and flows in African agriculture. Ambio 25:492-496.
-
(1996)
Ambio
, vol.25
, pp. 492-496
-
-
Smaling, E.M.A.1
Fresco, L.O.2
de Jager, A.3
-
21
-
-
0003692562
-
-
5th ed. Soil Manage. Support Serv. Tech. Monogr. 19. Pocahontas Press, Blacksburg, VA
-
Soil Survey Staff. 1992. Keys to soil taxonomy. 5th ed. Soil Manage. Support Serv. Tech. Monogr. 19. Pocahontas Press, Blacksburg, VA.
-
(1992)
Keys to soil taxonomy
-
-
-
22
-
-
0004245718
-
-
Rep. 28. DLO Winand Staring Ctr. for Integrated Land, Soil and Water Res., Wageningen, the Netherlands
-
Stoorvogel, J.J., and E.M.A. Smaling. 1990. Assessment of soil nutrient depletion in sub-Saharan Africa, 1983-2000. Rep. 28. DLO Winand Staring Ctr. for Integrated Land, Soil and Water Res., Wageningen, the Netherlands.
-
(1990)
Assessment of soil nutrient depletion in sub-Saharan Africa, 1983-2000
-
-
Stoorvogel, J.J.1
Smaling, E.M.A.2
-
25
-
-
0004074208
-
-
Environmental recovery in Kenya. John Wiley & Sons, New York
-
Tiffen, M., M. Mortimore, and F Gichuki. 1994. More people, less erosion. Environmental recovery in Kenya. John Wiley & Sons, New York.
-
(1994)
More people, less erosion
-
-
Tiffen, M.1
Mortimore, M.2
Gichuki, F.3
-
26
-
-
85102668815
-
-
Monitoring of nutrient flows in three districts in Kenya. In E.M.A. Smaling (ed.) Nutrient flows and balances as indicators of productivity and sustainability in sub-Saharan African agro-ecosystems. Agric. Ecosyst. Environ, (in press)
-
Van den Bosch, H., S. Maobe, V.N. Ogaro, J.N. Gitari, and J. Vlaming. 1998. Monitoring nutrient flows and economic performance in African farming systems (NUTMON): III. Monitoring of nutrient flows in three districts in Kenya. In E.M.A. Smaling (ed.) Nutrient flows and balances as indicators of productivity and sustainability in sub-Saharan African agro-ecosystems. Agric. Ecosyst. Environ, (in press).
-
(1998)
Monitoring nutrient flows and economic performance in African farming systems (NUTMON): III
-
-
Van den Bosch, H.1
Maobe, S.2
Ogaro, V.N.3
Gitari, J.N.4
Vlaming, J.5
-
28
-
-
0025723304
-
-
In M.J. Mausbach and L.P. Wilding (ed.) Spatial variabilities of soils and landforms. SSSA Spec. Publ. 28. SSSA, Madison, WI.
-
Wagenet, R.J., J. Bouma, and R.B. Grossman. 1991. Minimum data sets for use of soil survey information in soil interpretive models, p. 161-182. In M.J. Mausbach and L.P. Wilding (ed.) Spatial variabilities of soils and landforms. SSSA Spec. Publ. 28. SSSA, Madison, WI.
-
(1991)
Minimum data sets for use of soil survey information in soil interpretive models
, pp. 161-182
-
-
Wagenet, R.J.1
Bouma, J.2
Grossman, R.B.3
|