Impact of indigenous microorganism manure on soil mineralization and irish potato (Solanum tuberosum L.) productivity in Bambili, Cameroon

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International Journal of Development Research

Impact of indigenous microorganism manure on soil mineralization and irish potato (Solanum tuberosum L.) productivity in Bambili, Cameroon

Abstract: 

Irish potato (Solanum tuberosum L) is one of the world’s most consumed staple. It is eaten by more than a billion people worldwide. The amount of potato that is presently being produced in Cameroon is less than a third of the estimated production. An experiment was carried out in Bambili, North West Region Cameroon from March to June 2013 and 2014 in other to evaluate the effect of two organic fertilizers; Indigenous microorganism (IMO) and Effective microorganism (EM) manures on soil fertility improvement and productivity of Irish potato. A randomized complete block design of three treatments (IMO manure, EM manure and the control) and four replications was used. The study was carried out on the growth and yield of Irish potato and some soil analyses including C: N ratio, conductivity, pH and concentrations of K+ and Na+. Application of these fertilizers improves the plant growth and yield in different proportions. Plants treated with IMO manure had a significant increase in plant height (74.41 ± 19.44 cm), number of shoot (4.7 ± 2.36), leaf area (164.928 ± 37.18 cm2) and the weight of tuber (241.64 ± 32.94 g). Plants treated with EM manure also had an increase in plant height (69.59 ± 17.05 cm), number of shoots (4.7 ± 2.30), leaf area (162.354 ± 48.26 cm2) and weight of tubers (227.62 ± 44.58g). IMO manured soil had the highest K+ and Na+ concentration compared to EM and control with a positive and significant correlation between K+ and Na+ concentration and growth parameters in IMO plants. Thus, IMO manure improved the growth and productivity of S. tuberosum through a better mineralization and supply of nutrients (cations).

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