Limiting Maize (Zea Mays L.) Yield in Two Agro-Ecological Zones of the Southern-Central of Senegal
JCBPS; Section B; February 2021 –April 2021, Vol. 11, No. 2; 396-406, E- ISSN: 2249 –1929 [DOI: 10.24214/jcbps.B.11.2.39606.] Journal of Chemical, Biological and Physical Sciences An International Peer Review E-3 Journal of Sciences Available online atwww.jcbsc.org Section B: Biological Sciences CODEN (USA): JCBPAT Research Article Evaluation of nutrients (N, P, K) limiting maize (Zea mays L.) yield in two agro-ecological zones of the southern-central of Senegal. Arona Sonko1,2*, Ndèye Yacine Badiane Ndour2, Moussa N’Diénor2, Aliou Faye3, Niokhor Bakhoum4 & Saliou Ndiaye1 1 Ecole Nationale Supérieure d’Agriculture, Université Iba Der Thiam de Thiès, B.P A296 - Thiès – Sénégal. 2 Laboratoire National de Recherches sur les Productions Végétales, Institut Sénégalais de Recherches Agricoles, Bel Air, Route des Hydrocarbures, BP 3120 - Dakar - Sénégal. 3 Centre National de Recherches Agronomiques de Bambey, Institut Sénégalais de Recherches Agricoles, BP 53 CNRA – Bambey - Sénégal. 4 LMI LAPSE, Laboratoire Commun de Microbiologie IRD/ISRA/UCAD, Centre de Recherche de Bel Air, BP 1386, CP 18524 – Dakar - Sénégal. Received: 24 February 2021; Revised: 17 March 2021; Accepted: 30 March 2021 Abstract: Cereals response to nutrients varies according to soil characteristics in sub-Saharan Africa. Thus, subtractive trials were conducted to identify the major nutrients (N, P, K) limiting maize yield in Senegal central south (Nioro site) and east (Sinthiou Malème site) soils. In each zone, we set up a randomized complete block experiment on station with 4 replicates and on farm in 5 scattered fields. The following treatments were evaluated: non-fertilizer (T) control, completely fertilized with NPK at high doses (150N-40P2O5-40K2O kg/ha), and three other treatments (PK, NK, NP) resulting from the successive omission of one element from the NPK.
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