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dc.contributor.authorBiratu, G.K.
dc.contributor.authorElias, E.
dc.contributor.authorNtawuruhunga, Pheneas
dc.contributor.authorSileshi, Gudeta W.
dc.date.accessioned2019-12-04T11:24:27Z
dc.date.available2019-12-04T11:24:27Z
dc.date.issued2018-08
dc.identifier.citationBiratu, G.K., Elias, E., Ntawuruhunga, P. & Sileshi, G.W. (2018). Cassava response to the integrated use of manure and NPK fertilizer in Zambia. Heliyon, 4(8):e00759, 1-23.
dc.identifier.issn2405-8440
dc.identifier.urihttps://hdl.handle.net/20.500.12478/4371
dc.descriptionOpen Access Journal
dc.description.abstractCassava is Africa's second most important food source in terms of calories consumed per capita. However, farmers use little or no fertilizer on cassava and scant information is available regarding the cassava yield response to mineral and organic fertilizer inputs in Zambia. This study was undertaken to determine the response of cassava to the integrated use of organic and inorganic nutrient sources in two contrasting agroecological zones of Zambia; Mansa located in Zone III and Kabangwe located in Zone II. The treatments consisted of a factorial combination of four NPK rates (unfertilized control, 50N-11P-41.5K, 100N-22P-83K, and 150N-33P-124.5K kg/ha) with four rates of chicken manure (0, 1.4, 2.8, and 4.2 t/ha). The treatments were laid out in a randomized complete block design with three replications. Cassava height, stem girth, canopy diameter, leaf area index, and chlorophyll index were monitored over time and roots were harvested at 12 months after planting (MAP). Growth parameters and yield varied significantly (p < 0.01) both with NPK, manure application, and their interaction effects at 12 MAP. The combined application of 4.2 t/ha of chicken manure and 100N-22P-83 K kg/ha of mineral fertilizer resulted in the highest yields of 35.2 t/ha at Kabangwe. But, the highest average yield of 34.4 t/ha was recorded with the application of 2.8 t/ha manure and 100N-22P-83 K kg/ha mineral fertilizer at Mansa. This increased treatment yield by 24 and 29% over the sole NPK fertilizer application at Mansa and Kabangwe sites, respectively. Harvest index (HI) was higher when 2.8 t/ha chicken manure was applied in combination with 50N-11P-41.5K kg/ha at Kabangwe. But, the highest HI at Mansa site was achieved with the combination of 2.8 t/ha manure and 100N-22P-83 K kg/ha. This combination also resulted in the highest agronomic efficiency of N, P and K at both sites. It is concluded that cassava productivity and nutrient use efficiency can be improved through the integrated use of NPK and manure in Zambia.
dc.description.sponsorshipAgricultural Research for Development of Strategic Crops in Africa
dc.format.extent1-23
dc.language.isoen
dc.subjectAgriculture
dc.subjectCassava
dc.subjectSoil
dc.subjectNpk Fertilizers
dc.subjectManure
dc.titleCassava response to the integrated use of manure and NPK fertilizer in Zambia
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpAgriculture for Nutrition and Health
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationAddis Ababa University
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversity of KwaZulu-Natal
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.countryZambia
cg.creator.identifierPheneas Ntawuruhunga: 0000-0003-2330-9070
cg.researchthemeBIOTECH & PLANT BREEDING
cg.isijournalISI Journal
cg.iitasubjectPlant Breeding
cg.iitasubjectSoil Fertility
cg.journalHeliyon
cg.howpublishedFormally Published
cg.accessibilitystatusOpen Access
local.dspaceid100448
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1016/j.heliyon.2018.e00759


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