Legumenous Fodder Trees in the Farming System




The intensive feed garden (IFG)

This is a relatively new concept which is currently receiving a lot of research attention at ILCA. The IFG aims at intensive cultivation of fodder trees and grasses on a small plot of land, usually close to the farmer’s animal holding area. It is especially suitable for situations where alley farming may be inappropriate for one reason or the other, and can also be used, in some cases, to supplement feed resources from alley farms.

The prototype IFG contains the legumes leucaena and gliricidia on one half and the grasses Panicum maximum and Pennisetum purpureum on the other. The gardens are 200 m and predicated on intensive nutrient cycling through the application of manure or fertilizer to maximise feed production from a limited area. The goal is to have gardens which will provide the major feed requirements for 4-6 animals.

Current research aims at further intensifying the gardens through modifications in spacing and design (spatial arrangement of trees and grasses), as well as quantification of their productivities and carrying capacities.

Nitrogen Fixing Layers For Zone 6 Food Forest Building

Derived From the book Native Plants of the Northeast by Donald J. Leopold 2005

Hardiness Zone: 6

Tree Possibilities: (Nitrogen Fixing)

  1. Cercis canadensis ; Eastern Redbud ; Zone 4-9 ; moist well drained soil ; sun to shade (Fabaceae)
  2. Cladrastis kentukea ; Yellowwood ; Zone 4-8 ; Dry to moist well drained ; sun to partial sun (Fabaceae)
  3. Gleditsia triacanthos ; Honeylocust ; Zone 4-9 ; dry to wet soil ; sun (fabaceae)
  4. 4.       Gymnocladus dioicus ; Kentuckey coffeetree ; 3 – 8 ; dry to moist, well drained ; (Fabaceae)
  5. 5.       Robinia pseudoacacia ; Black Locust ; 4-8 ; dry to moist, well drained ; (Fabaceae)

Shrub possibilities: (Nitrogen Fixing)

  1. Amorpha fruiticosa ; Indigobush ; 4-9 ; dry to moist, well adaptable ; sun (Fabaceae)
  2. Robinia hispida ; Bristly Locust ; 5-8 ; dry infertile ; sun ; (Fabaceae)

Wildflower possibilities: (Nitrogen Fixing)

  1. Baptisia australis ; Blue false indigo ; 4-9 ; moist to dry ; sun to partial sun (Fabaceae)
  2. Lupinus perennis ; Blue Lupine ; 3-9 ; well drained ; sun to partial sun (Fabaceae)

Vine Possibilities: (Nitrogen Fixing)

  1. Wisteria frutescens ; American Wisteria ; 5-9 ; moist to wet ; sun to partial sun (Fabaceae)

Wikipedia Inga Alley Cropping



For Inga alley cropping the trees are planted in rows (hedges) close together, with a gap, the alley, of about 4m between the rows. An initial application of rock phosphate has kept the system going for many years.

When the trees have grown, usually in about two years, the canopies close over the alley and cut off the light and so smother the weeds.

The trees are then carefully pruned. The larger branches are used for firewood. The smaller branches and leaves are left on the ground in the alleys. These rot down into a good mulch (compost). If any weeds haven’t been killed off by lack of light the mulch smothers them.

The farmer then pokes holes into the mulch and plants his crops into the holes.

The crops grow, fed by the mulch. The crops feed on the lower layers while the latest prunings form a protective layer over the soil and roots, shielding them from both the hot sun and heavy rain. This makes it possible for the roots of both the crops and the trees to stay to a considerable extent in the top layer of soil and the mulch, thus benefiting from the food in the mulch, and escaping soil pests and toxic minerals lower down. Pruning the Inga also makes its roots die back, thus reducing competition with the crops.

Project Report presented to the TSF Foundation Developing Agroforestry Options for Agriculture and Research: Alley Cropping on Marginal Lands for Farm Diversification



During the first growing season the extent of weed suppression from the bark mulch was less than anticipated, so it was necessary to add a secondary barrier in the form of “sheet” mulch.

For farmers and other land owners with limited forest acreage (such as the 7 acre MNG), harvesting a sufficient number of live trees for mushroom production of appropriate species (hardwoods) and diameter (4-6” diameter) is unsustainable, given that 100 to 200 trees per year would be require d for a modest sized mushroom operation. In Japan where shiitake mushrooms have been grown for centuries, a sustainable production system is practiced that involves coppice management of oak trees for continuous production of mushroom logs. Coppicing is a pole production system that involves  cutting back the main stem of a young tree, which stimulates growth of multiple new stems at the base of the orig inal trunk. When these poles are harvested several years later, new stems arise, and this cycle can be continued indefinitely.

5.2 Forage Tree Legumes in Alley Cropping Systems


Interesting Info:

· a rapid growth rate,
· ability to withstand frequent cutting,
· good coppicing ability (regrowth after cutting),
· ease of establishment from seeds or cuttings,
· nitrogen fixing capacity,
· deep-rooted with a different root distribution to the crop,
· multiple uses such as forage and firewood,
· ability to withstand environmental stresses such as drought, waterlogging, and extremes of pH,
· high leaf to stem ratio,
· small leaves or leaflets,
· dry season leaf retention and
· freedom from pests and diseases.



Anoka, U.A., Akobundu, I.O. and Okonkwo, S.N.C. (1991) Effects of Gliricidia sepium and Leucaena leucocephala on growth and development of Imperata cylindrica. Agroforestry Systems 16, 1-12.

Anonymous (1983) International Institute for Tropical Agriculture. Annual Report (1983). Ibadan, Nigeria.

Attah-Krah, A.N. and Sumberg, J.E. (1988) Studies with Gliricidia sepium for crop/livestock production systems in West Africa. In: Gliricidia sepium: Management and Improvement. Proceedings of a workshop held at CATIE, Costa Rica. NFTA Special Publication 87-01, pp. 31-43.

Basri, I.H., Mercado, A. and Garrity, D.P. (1990) Upland rice cultivation using leguminous tree hedgerow on strongly acid soils. Agronomy Abstracts (1990) 53.

Berendse, F. (1979) Competition between plant populations with different rooting depths. I. Theoretical considerations. Oceologia (Berlin) 43, 19-26.

Dofeliz, G. and Nesbitt, H.J. (1984) Increasing corn yields by mulching with Ipil-Ipil (Leucaena leucocephala). Crop Science Society of the Philippines Conference, Batai Ilocos Norte, Philippines, pp. 120-153.

Duguma, B., Kang, B.T. and Okali, D.U.U. (1988) Effect of pruning intensities of three woody leguminous species grown in alley cropping with maize and cowpea on an Alfisol. Agroforestry Systems 6, 19-35.

Evensen, C.L.J. (1984) Seasonal yield variation, green leaf manuring and eradication of Leucaena leucocephala. MSc thesis, University of Hawaii, USA.

Evensen, C.L.J. and Yost, R.S. (1990) The growth and lime replacement value of three woody green manures produced by alley cropping in west Sumatra. In: Moore, E. (ed.), Agroforestry land-use systems. NFTA, Waimanalo, Hawaii, USA, pp. 109-112.

Ewel, J., Benedict, F., Berich, C., Brown, B., Gliessiman, S., Amador, M., Bermudez, R., Martinez, A., Maranda, R. and Price, N. (1982) Leaf area, light transmission, roots and leaf damage in nine tropical plant communities. Agro-Ecosystems 7, 305-326.

Fernandes, E.C.M., Davey, C.B. and Sanchez, N.C. (1990) Alley cropping on an Ultisol: Mulch, fertilizer and hedgerow root pruning effects. Agronomy Abstracts (1990) 56.

Getahun, A. (1980) Alley Cropping in the Humid and Subhumid Tropics. State of the Art and Recommendations. Agroforestry Project Report. IITA, Ibadan, Nigeria.

Guevara, A.B. (1976) Management of Leucaena leucocephala for maximum yield and nitrogen contribution to intercropped corn. PhD thesis, University of Hawaii, USA.

Gutteridge, R.C. (1990) Evaluation of the leaf of a range of tree legumes as a source of nitrogen for crop growth. Experimental Agriculture 28, 195-202.

Hauser, S. (1990) Water and nutrient dynamics under alley cropping versus monocropping in the humid-subhumid transition zone. Transactions 14th International Soil Science Society Congress, Kyoto, Japan, Vol. VI, pp. 204-209.

Hawkins, R., Sembiring, H., Lubis, D. and Suwardjo (1990) The Potential of Alley Cropping in the Uplands of East and Central Java. Upland Agriculture Conservation Project (UACP), Agency for Agricultural Research and Development, Department of Agriculture, Salatiga, Indonesia.

Juo, A.S.R. and Kang, B.T. (1989) Nutrient effects of modification of shifting cultivation in West Africa. In: Proctor, J. (ed), Mineral Nutrients in Tropical Forest and Savanna Ecosystems, Blackwell Scientific, London, UK, pp. 289-300.

Kang, B.T. and Ghuman, B.S. (1991) Alley cropping as a sustainable system. In: Moldenhauer, W.C., Hudson, N.W., Sheng, T.C. and Lee, S.W. (eds), Development of Conservation Farming on Hillslopes. Soil and Water Conservation Society, Ankeny, Iowa, USA, pp. 172-184.

Kang, B.T. and Reynolds, L. (1986) Alley Farming in the Humid and Sub-humid Tropics. Paper presented at IITA Board of Trustees Meeting 12-15 April 1986. IITA, Ibadan, Nigeria.

Kang, B.T. and Wilson, G.F. (1987) The development of alley cropping as a promising agroforestry technology. In: Steppler, H.A. and Nair P.K.R. (eds), Agroforestry a Decade of Development. ICRAF, Nairobi, Kenya, pp. 227-243.

Kang, B.T., Wilson, G.F. and Sipkens, L. (1981) Alley cropping maize (Zea mays) and leucaena (Leucaena leucocephala) in Southern Nigeria. Plant and soil 63, 165-179.

Kang, B.T., Grimme, T. and Lawson, T.L. (1985) Alley cropping sequentially cropped maize and cowpea with leucaena on a sandy soil in Southern Nigeria. Plant and Soil 85, 267-277.

Kang, B.T., Reynolds, L. and Atta-Krah, A.N. (1990) Alley farming. Advances in Agronomy 43, 315-359.

Kang, B.T., Gichuru, M., Hulugalle, N. and Swift, M.J. (1991) Soil constraints for sustainable upland crop production in humid and subhumid west Africa. In: Soil Constraints on Sustainable Plant Production in the Tropics, Tropical Agriculture Research Center, Tsukuba, Japan, pp. 101-112.

Kass, D.L., Araya, S.J.S., Sanchez, J.O., Pinto, L.S. and Ferreira, P. (1992) Ten years experience with alley farming in central America. Paper read at International Alley Farming Conference, IITA, Ibadan, Nigeria, September 14-18, 1992.

Lal, R. (1989a) Agroforestry systems and soil surface management of a tropical alfisol: 2. Water runoff soil erosion and nutrient loss. Agroforestry Systems 8, 97-111.

Lal, R. (1989b) Agroforestry systems and soil surface management of a tropical alfisol: 3. Changes in soil chemical properties. Agroforestry Systems 8, 113-132.

Lal, R. and Greenland, D.J. (1986) Physical properties of soils with low activity clays. In: Proceedings of Symposium on Low Activity Clay (LAC) Soils. SMSS, Washington DC, USA, pp. 63-90.

Lawson, T.L. and Kang, B.T. (1990) Yield of maize and cowpea in an alley cropping system in relation to available light. Agriculture and Forestry Meteorology 52, 347-357.

Mekonnen, S. (1992) Competition between maize (Zea mays) and Leucaena diversifolia in an alley cropping system. M.Agr.Sc. thesis, The University of Queensland, Australia.

Nair, P.K.R. (1987) ICRAF Field Station at Machakos. A demonstration and training site for agroforestry technologies. Agroforestry Systems 5, 383-393.

Paningbatan, E., Rosario, A. and Ciesiolka, C. (1989) Soil erosion management for sustained crop production of hillylands in the Philippines. Proceedings of Philippine National Science Society Regional Seminar. Los Banos, Philippines, pp. 26-34.

Paningbatan, E.P., Jr (1990) Alley cropping for managing soil erosion in sloping lands. Transactions 14th International Soil Science Society Congress, Kyoto, Japan. Vol. VII, pp. 376-377.

Rachie, K.O. (1983) Intercropping tree legumes with annual crops. In: Huxley, P.A. (ed.), Plant Research and Agroforestry. International Council for Research in Agroforestry, Kenya, pp. 103-116.

Read, M.D. (1982) Management alternatives for maize bean and leucaena based cropping systems. PhD thesis, Colorado State University, USA.

Siaw, D.E.K.A., Kang, B.T. and Okali, D.U.U. (1991) Alley cropping with Leucaena leucocephala (Lam.) de Wit and Acioa barteri (Hook f.) Engl. Agroforestry Systems 14, 219-231.

Singh, R.P., Ong, C.K. and Saharan, N. (1989) Above and below ground interactions in alley cropping in semi arid India. Agroforestry Systems 9, 259-274.

Ssekabembe, C.K. (1985) Perspectives on hedgerow intercropping. Agroforestry Systems 3, 339-356.

Szott, L.T. (1987) Improving the productivity of shifting cultivation in the Amazon basin of Peru through the use of leguminous vegetation. PhD thesis, North Carolina State University, Raleigh, USA.

Verinumbe, I. and Okali, D.U.U. (1985) The influence of coppiced teak Tectona grandis L.F., regrowth and roots on intercropped maize. Agroforestry Systems 3, 381-386.

Yamoah, C.F., Agboola, A.A. and Wilson, G.F. (1986) Decomposition, nitrogen release and weed control by prunings of alley cropping shrubs. Agroforestry Systems 4, 239-246.

Young, A. (1989) Agroforestry for Soil Conservation. CAB International, Wallingford, UK.