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Biomass production and maize yield under a tree-based improved fallow of sesbania and pigeonpea

By: Nyakanda, C | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico).
Contributor(s): Dzowela, B.H [coaut.] | Mariga, I.K [coaut.] | Murwira, H.K [coaut.] | Waddington, S.R.|Murwira, H.K.|Kumwenda, J.D.T.|Hikwa, D.|Tagwira, F [eds.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Harare (Zimbabwe) Soil Fert Net|CIMMYT : 1998ISBN: 970-648-006-4.Subject(s): Biomass AGROVOC | Cropping systems | Green manures | Nitrogen content | Pigeon peas | Sesbania | Zimbabwe | CIMMYT | Soil Fert Net | Zea mays AGROVOC | Soil fertility AGROVOCDDC classification: 631.45 Summary: Improved fallows, using appropriate trees or shrubs, have been observed to substantially increase the yields of subsequent maize crops over a period of one to two years. Use of improved fallows has therefore been proposed as an approach to increasing soil productivity, particularly on smallholder farms where inadequate crop residues are returned to the soil and procurement of inorganic fertilisers is difficult. However, due to limited land area for cultivation, there is need to reduce the duration of fallow by establishing them under staple crops, or increase the performance of the established fallows.|In this study, when improved fallows of sesbania and pigeonpea were established under maize in the first year of a two-year fallow period, neither maize yield nor fallow biomass was affected. Similar residual effects were obtained as shown by the similar yields of maize subsequently grown over the fallowed land regardless of whether sole fallow stands were established or whether the fallow species were established under maize. Fallowing for two years gave significantly larger maize yields than fallowing for one year but there were no differences between either the two species or their mixture.|Collection: CIMMYT Publications Collection
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 631.45 WAD (Browse shelf) 1 Available P628739
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Improved fallows, using appropriate trees or shrubs, have been observed to substantially increase the yields of subsequent maize crops over a period of one to two years. Use of improved fallows has therefore been proposed as an approach to increasing soil productivity, particularly on smallholder farms where inadequate crop residues are returned to the soil and procurement of inorganic fertilisers is difficult. However, due to limited land area for cultivation, there is need to reduce the duration of fallow by establishing them under staple crops, or increase the performance of the established fallows.|In this study, when improved fallows of sesbania and pigeonpea were established under maize in the first year of a two-year fallow period, neither maize yield nor fallow biomass was affected. Similar residual effects were obtained as shown by the similar yields of maize subsequently grown over the fallowed land regardless of whether sole fallow stands were established or whether the fallow species were established under maize. Fallowing for two years gave significantly larger maize yields than fallowing for one year but there were no differences between either the two species or their mixture.|

English

9906|AGRIS 9902|R98-99ANALY

Jose Juan Caballero

CIMMYT Publications Collection

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