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tems in Malawi and Zimbabwe. Proceedings of the -Soil Fert Net Results and Planning Workshop held from 7 to 11 July 1997 at Africa University, Mutare, Zimbabwe. Soil Fert Net and CIMMYT Zimbabwe, Harare, Zimbabwe. pp. 85-86. Mokwunye, A.U., A. de Jager, and E.M.A. Sma ling (ed.). 1996. Restoring and maintaining the productivity of West African soils: Key to sustainable development. Miscellaneous Fertilizer Studies. 14. International Fertilizer Development Centre, Lome, Togo. pp. 12-31. Nandwa, S.M., J.M. Anderson and P.O. Seward. 1995. The effect of placement of maize stover and N fertilisation on maize productivity and N use efficiency. Mimeo, 19 pp. Palm, CA. 1995. Contribution of Agroforestry trees to nutrient requirements of intercropped plants. Agroforestry Systems 30:105-12~. Palm, CA., R.J.K. Myers, and S.M. Nandwa. 1997. Combined use of organic and inorganic nutrient source for soil fertility maintenance and replenishment. In: R.J. Buresh et al (ed:) Replenishing Soil Fertility in Africa. SSSA special publication No. 51. SSSA, Madison, Wisconsin, USA. pp. 193-217. Peoples, M.B., and D.F. Herridge, 1990. Nitrogen fixation by legumes in tropical and subtropical Agriculture. Advances in Agronomy 44:155-223. Sakala, W.O. 1994. Crop management interventions in traditional maize pige,?npea intercropping systems in Malawi, MSc. Thesis, Bunda College of Agriculture, University of Malawi. Smaling, E.M.A. 1993. An agroecological framework for integrating nutrient management, with special reference to Kenya. PhD Thesis. Wageningen Agricultural University, Wageningen, Netherlands. . Young, A. and P. Brown. 1962. The PhYSical Environment of Northern Nyasaland. Ministry of Land and Physical Planning, Lilongwe, Malawi. 38pp. 204 Grain legumes and Green Manures for Soil Fertility in Southern Africa
MANAGEMENT OF AN ACID SOIL USING MINE TAILINGS AS LIME FOR SOYBEAN PRODUCTION LACKSON K. PHIRI, MOSES MWALE and MLOTHA I. DAMASEKE Mt. Makulu Research Station, Soil Fertility Programme, Private Bag 7, Chilanga, Zambia; E-Mail: genetics@zamnet.zm Abstract Soil acidity is the most limiting constraint in acid soils of the high rainfall area (Region III) of Zambia. These soils are not suitable for growing most arable crops including soybean (Glycine max L.) without adjustment of soil pH. Nampundwe mine tailings (NMT) are an abundant and readily available dolomitic limestone source in Nampundwe area, 60 km west of Lusaka. The objective of this work was to evaluate the effectiveness of NMT in managing soil acidity for soybean production in Region III of Zambia in comparison with commercial agricultural lime (AgLi). Results for the 1995/96 season show that AgLi significantly (P
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Grain Legumes and Green Manures for
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Acknowledgments • The Leopard Roc
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Evall!ating mucuna green manure tec
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INTRODUCTION AND CONFERENCE OBJECTI
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Table 1. Paradigm shifts underlying
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100 90 80 - - 0 - - Uptake by ihe m
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- 6 ~ 9 8 7 0- 5 CḎ ns 4 0::: 3
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Table 3. Millet grain and total dry
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Dvorak KA 1996. Adoption potential
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LEGUMES FOR SOIL FERTILITY IN SOUTH
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to the system in such a way that th
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Muetzelfeldt, R.1. 1995. A framewor
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ing capacity. Legumes offer other b
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people/km2), land holdings are smal
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ments. It would help researchers to
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Own livestock Gununo farmers for th
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Questions and Answers ~ey Papers To
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Historical Perspective on Soyabean
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ganic amendment for resource-poor f
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MPhil. Thesis. University of Zimbab
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deal of research work has been bias
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1600 '7 ns 1400 ~ 1200 Cl ~ 1000 "C
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Arbuscular mycorrhizal fungi (AMF)
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Boswell EP, Koide RT, Shumway DL, A
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Materials and Methods The trial was
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0.9 0.8 ~ 0.7 Rec '-' 0.6 Vl ::9 0.
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Series no 5. Soil Science SOciety o
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Materials and Methods Persistence o
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content resulted in increased rhizo
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(Mugwiia and Murwira, 1997). Howeve
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Table 2. Average maize yield estima
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implied that most fanners prefer to
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] Questions and Answers Rhizobium,
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ADDING A NEW DIMENSION TO THE IMPRO
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Materials and Methods The study use
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a) Chikwaka b) Chinyika !21 C. absu
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Table 3. N, P and Kconcentrations (
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Abstract SCREENING OF SHORT DURATIO
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Table 2. Characteristics of short d
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RISK DIVERSIFICATION OPPORTUNITIES
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management technologies with differ
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Table 3. Expected annual returns (Z
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Table 6. Risk diversification indic
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een renewed interest in green manur
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unfertilised maize crop of over 200
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Questions and Answers Screening of
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GREEN MANURE AND FOOD LEGUMES RESEA
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7000 6000 ';' €.. 5000 .~MzSole :
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Table 5. Maize grain yield (kg ha")
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Phiri, A.D.K. 1999. Effects of Sesb
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amount of roots with sl:nnhemp. It
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It was proved that a mixed farming
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Table 3. Above·ground biomass (t/h
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and horticulture in Zimbabwe: Case
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GRAIN LEGUMES AND GREEN MANURES IN
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Results Table 1. Adaptation of gree
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Four rates of fertilizer N were app
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THE ROLE OF COWPEA (VIGNA UNGUICULA
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Table 1. Non-legume cropping patter
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Table 9. Common pests on cowpeas as
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few of the farmers interviewed acqu
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Murwira, H.K., M.J. Swift and P.G.H
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Materials and Methods On farm exper
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18000 1600) 14000 a) Zambia 12000 m
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EFFECT OF DIFFERENT GREEN MANURE LE
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.. ~ Table 2. The effect of time o
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Chivinge, O.A., E. Kasembe, and I.K
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times with regionally specific adap
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ter content at 180 cm was still wel
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to amount of biomass, quality of bi
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with the natural fallow, which did
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and K to maize as an equivalent amo
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forts to understand the mechanisms
Page 162 and 163: gen recovery rates in relation to p
Page 164 and 165: The first steps to improve soil fer
Page 167 and 168: Questions and Answers .Identificat
Page 169 and 170: MUCUNA - MAIZE ROTATIONS AND SHORT
Page 171: Table 3. Percent nitrogen (% N) con
Page 174 and 175: ~e decomposition of legume residues
Page 176 and 177: Table 3. Effect of forage legumes o
Page 178 and 179: available nutrients and vice versa,
Page 180 and 181: Conclusion and Recommendation Mucun
Page 182 and 183: Specific objectives were to: • Te
Page 184 and 185: '"~ v '" ~ ~ 1400000 1200000 100000
Page 187 and 188: EFFECT OF SURFACE APPLICATION AND I
Page 189: it 4 a···· · ... - :.!! e.....
Page 193 and 194: PERFORMANCE OF GREEN MANURES AND GR
Page 195: Mungwi soil, cowpea and soyabean pr
Page 198 and 199: Among BNF systems, symbiotic system
Page 200 and 201: 3500 .f"'3000 ca ,c2500 CI "" - 200
Page 202 and 203: above-ground biomass was not transl
Page 204 and 205: 3000 "0 ]i >. ,5 ~ C> 800 600 400 2
Page 206 and 207: Most interventions involving green
Page 208 and 209: ~ ~~----.-~r-~-------------r~~ Aoo
Page 210 and 211: stover N, followed by after pigeon
Page 214 and 215: 1965). The tailings and AgLi were a
Page 216 and 217: The significant soybean yield could
Page 218 and 219: twice the yield is necessary. We ha
Page 220 and 221: Table 1. Maize and Grain Legumes Pr
Page 222 and 223: Recommendations and Conclusion In v
Page 224 and 225: performance of private sector compa
Page 226 and 227: the investment costs incurred. The
Page 228 and 229: Results and Planning Workshop. Soil
Page 231 and 232: A SOCIO-ECONOMIC ANALYSIS OF LEGUME
Page 233 and 234: Table 1. Gross margins from the dif
Page 235 and 236: Abstract LINKING TECHNOLOGY DEVELOP
Page 237 and 238: 3. If households are linked to prod
Page 239 and 240: Table 9. Average Table 8. Pigeonpea
Page 241 and 242: ance of sorghum-pigeonpea intercrop
Page 243: Mligo, J.K., 1995. Pigeonpea breedi
Page 246 and 247: To Charles Nhemachena, et al. Q: 1)
Page 248 and 249: • Assessment of the potential ben
Page 250 and 251: few studies characterized the house
Page 252 and 253: • Conduct more research to measur
Page 254: Socio-Economics, Policy and Technol
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