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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Impact of organic and inorganic fertilizers on tomato vigor, yield and fruit composition under tropical andosol soil conditions
Fruits, Volume 64, No. 3, Year 2009
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Description
Introduction. Little is known about the impact of organic manure on andosol. Materials and methods. Two varieties of Solanum lycopersicum L. (cvs. 'Rio grande' and 'Rossol VFN') were grown under tropical andosol. The soil was silty, acidic and very poor in Bray P (3 mg·kg-1) with a strong imbalance in the (Ca:Mg:K) ratio of (74.0:25.0:0.7). Five fertilization treatments were used: (i) control with no fertilizer, (ii) minerals, with a (Ca:Mg:K) ratio of (76:18:6) and 75 mg P.kg-1 of soil; (iii) poultry manure with a (Ca:Mg:K) ratio of (68:24:7) and 450 mg P·kg-1 of soil; (iv) a combination of (ii) and (iii), and (v) mineral fertilization as applied by local farmers, with a (Ca:Mg:K) ratio of (73:25:1) and 54 mg P·kg-1 of soil. Results. All cationbalanced treatments (organic, mineral or a combination of both) significantly improved plant growth, the number of trusses and fruits per plant, the marketable fruit yield and fruit P, K, Ca and Na contents of both tomato varieties considered. The 'Rio grande' variety was the most productive (32-44 t·ha-1) compared with the 'Rossol' variety (20-22 t·ha-1). There was no major difference between the organic fertilizer and the cation-balanced mineral fertilizer. There was no effect of mineral fertilizer with an unbalanced cation composition on tomato plant growth and production as compared with unfertilized control. Conclusion. In tropical andosol poor in potassium and phosphorous and with excess of Mg, application of poultry manure in adequate dosage and at the right time is capable of sustaining tomato fruit production, as well as the application of calculated inorganic fertilizer. © 2009 Cirad/EDP Sciences.
Authors & Co-Authors
Tonfack, Libert Brice
Cameroon
Fac. Sci. Univ.
France, Castanet-tolosan
Génomique et Biotechnologie Des Fruits - Gbf
Bernadac, Anne
France, Castanet-tolosan
Génomique et Biotechnologie Des Fruits - Gbf
Youmbi, Emmanuel
Cameroon
Fac. Sci. Univ.
Mbouapouognigni, V. Paul
Cameroon
Inst. Agric. Res. Dev. (irad)
Ngueguim, Martin
Cameroon
Inst. Agric. Res. Dev. (irad)
Akoa, Amougou
Cameroon
Fac. Sci. Univ.
Statistics
Citations: 83
Authors: 6
Affiliations: 3
Identifiers
Doi:
10.1051/fruits/2009012
ISSN:
02481294
e-ISSN:
1625967X