TY - JOUR AV - public A1 - Daniel, J N A1 - Ong, C K TI - Perennial pigeonpea: a multi-purpose species for agroforestry systems UR - http://link.springer.com/article/10.1007/BF00115360 JF - Agroforestry Systems SN - 0167-4366 PB - Kluwer N2 - Perennial pigeonpea is receiving considerable attention in India as a multi-purpose species for agroforestry systems. Its multiple uses include food, fodder, manure and firewood. Data on perennial pigeonpea, together with relevant information on shorter-duration genotypes, are reviewed in this paper. Growth of perennial pigeonpea, like that of medium-duration grain types (150 to 190 days) in intercropping systems with cereals, is slow during the first 3 to 4 months. Therefore, it requires minimum sacrifice in terms of yield of annual crops in the system during the first year and offers many of the benefits of tree species in subsequent years. Total dry matter production potential of perennial pigeonpea in peninsular India is more than 15 t ha?1 year?1 consisting of about 2.0 t of grain, 3.0 t of leaf litter, 9.0 t of stems and 1.0 t of residue made up of podwalls and twigs. In addition, pigeonpea improves soil fertility by nutrient cycling and biological nitrogen fixation. Susceptibility of pigeonpea to diseases and negative effects on growth of annual crops are the potential constraints in the semi-arid tropics. Some pertinent areas for further research are proposed KW - Agroforestry KW - fodder KW - genotype KW - grain yield KW - perennial pigeonpea KW - soil fertility Y1 - 1990/// SP - 113 ID - icrisat6383 EP - 129 VL - 10 IS - 2 ER -