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dc.contributor.authorEsilaba, Anthony O.
dc.contributor.authorNyende, P
dc.contributor.authorNalukenge, G
dc.contributor.authorByalebeka, JB
dc.contributor.authorDelve, Robert J.
dc.contributor.authorSsali, H
dc.date.accessioned2014-10-02T08:33:09Z
dc.date.available2014-10-02T08:33:09Z
dc.date.issued2005
dc.identifier.issn0167-8809
dc.identifier.urihttp://hdl.handle.net/10568/44045
dc.description.abstractResource flow models are useful tools that assist farmers in analysing their soil fertility management strategies and in planning, experimenting and adapting ways to improve the use of scarce local resources. Resource flows and farm nutrient balance studies were carried out in eastern Uganda to ascertain the movement of organic resources and nutrients in and out of the farm system during a participatory learning and action research (PLAR) process. The resource flows were transformed into nutrient flows and partial nutrient balances were calculated using the Resource Kit computer package. Results of a farmers soil fertility management classification at the start of the PLAR intervention in 1999 revealed that 3% of the farmers were good soil fertility managers (class I), 10% were average soil fertility managers (class II) and 87% were poor soil fertility managers (class III). The results indicate that the net farm nutrient balances in kg ha?1 per season for all the nutrients [nitrogen (N), phosphorus (P), and potassium (K)] were negative for both the good and the poor soil fertility managers. Class 1 farm balances irrespective of the season, were however more negative than those of class 3 farms. For the long rains seasons (LR 2000, 2001 and 2002), the average net farm nutrient balances for N, P, and K for class I farms were ?5.0, ?0.6 and ?8.0 kg ha?1 year?1, while for the short rains seasons (SR 2000 and 2001), the nutrient balances were ?3.5, ?0.5 and ?6.0 kg ha?1 year?1, respectively. For the class III farms, the average net farm nutrient balances for N, P, and K in the long rain seasons (LR 2000, 2001 and 2002) were ?3.3, ?0.3 and ?4.0 kg ha?1 year?1 while for the short rains seasons (SR 2000 and 2001), the nutrient balances were ?3.5, 0.5 and ?5.0 kg ha?1 year?1, respectively. Soil management interventions for these small-scale farmers should aim at reversing nutrient depletion with a focus on profitable management of the crop production system, which is the major cause of nutrient depletion.
dc.language.isoen
dc.sourceAgriculture, Ecosystems & Environment
dc.subjectSMALL FARMS
dc.subjectANIMAL PRODUCTION
dc.subjectFARMING SYSTEMS
dc.subjectNUTRITION PHYSIOLOGY
dc.subjectSOIL FERTILITY
dc.subjectSOIL MANAGEMENT
dc.subjectSOIL CHEMICOPHYSICAL PROPERTIES
dc.subjectFARM MANAGEMENT
dc.subjectUGANDA
dc.subjectEXPLOTACIÓN EN PEQUEÑA ESCALA
dc.subjectPRODUCCIÓN ANIMAL
dc.subjectSISTEMAS DE EXPLOTACIÓN
dc.subjectFISIOLOGÍA DE LA NUTRICIÓN
dc.subjectFERTILIDAD DEL SUELO
dc.subjectMANEJO DEL SUELO
dc.subjectPROPIEDADES FÍSICO-QUÍMICAS SUELO
dc.subjectMANEJO DE FINCAS
dc.subjectUGANDA
dc.titleResource flows and nutrient balances for crop and animal production in smallholder farming systems in Eastern Uganda
dc.description.versionPeer-reviewed
dc.typeJournal Article
cg.subject.ciatFARMING SYSTEMS
cg.subject.ciatLIVESTOCK
cg.subject.ciatPARTICIPATORY RESEARCH
cg.identifier.statusOpen Access
cg.identifier.urlhttp://ciat-library.ciat.cgiar.org/Articulos_Ciat/resource_flows.pdf
cg.isijournalISI Journal
cg.coverage.regionEAST AFRICA
cg.coverage.countryUGANDA


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