Comparative Effects of Basalt Dust, NPK 20-10-10 and Poultry Manure on Soil Fertility and Cucumber (Cucumis sativus) Productivity in Bafut (Cameroon Volcanic Line)
Volume 8, Issue 6, December 2019, Pages: 323-334
Received: Oct. 19, 2019;
Accepted: Nov. 12, 2019;
Published: Nov. 19, 2019
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Primus Azinwi Tamfuh, Department of Soil Science, Faculty of Agronomy and Agricultural Sciences, University of Dschang, Dschang, Cameroon; Department of Mining and Mineral Engineering, National Higher Polytechnic Institute, University of Bamenda, Bambili, Cameroon
Pierre Wotchoko, Department of Geology, Higher Teacher Training College, University of Bamenda, Bambili, Cameroon
Djibril Gus Kouankap Nono, Department of Geology, Higher Teacher Training College, University of Bamenda, Bambili, Cameroon
Carine Naah Yuh Ndofor, Department of Geology, Higher Teacher Training College, University of Bamenda, Bambili, Cameroon
David Guimolaire Nkouathio, Department of Earth Sciences, Faculty of Sciences, University of Dschang, Dschang, Cameroon
Dieudonné Bitom, Department of Soil Science, Faculty of Agronomy and Agricultural Sciences, University of Dschang, Dschang, Cameroon
Although chemical fertilizers have boosted food production in the last century, their efficiency is limited by their low potential to remineralize and restore chemically depleted soils at long term. This work investigates the comparative effects of basalt dust, poultry manure and NPK 20-10-10 on soil fertility and cucumber performance in Bafut (North-West Cameroon). The work was done in the field and in the laboratory. The experimental plot (82 m2) was a randomized complete block design (RCBD) with five treatments (and three replications): control (T0), 2.5 tons ha-1 of basalt dust (T1), 20 tons ha-1 of poultry manure (T2), 0.7 tons ha-1 of NPK 20-10-10 fertilizer (T3) and 5 tons ha-1 of basalt dust (T4). The main results revealed that T0 showed a sandy clayey loam texture, acidic pH (5.1), very high organic carbon (6.4%), low total nitrogen (0.2%) and moderately available phosphorus (16.70 mg kg-1). The exchangeable complex revealed high K (1.02 cmol (+). kg-1), very low Ca (0.45 cmol (+). kg-1) and Mg2+ (0.17 cmol (+). kg-1), low Na+ (0.2 cmol (+). kg-1), very low sum of exchangeable bases (1.84 cmol (+). kg-1), very low cation exchange capacity (CEC) and a moderate base saturation (43.4%). The C/N was very high (23) indicating very poor quality organic matter and a potentially very slow mineralization rate. After treatment, pH, exchangeable bases Ca and Mg increased after harvest whereas Na and K decreased for all the treatments. The growth and yield parameters of all treatments, except number of fruits, were such that T2>T3>T4>T1>T0. The numbers of fruits were as follows: T2>T4>T3>T1>T0. The most economically viable soil treatment was attained by T2 with a profit rate (PR) of 933% and a VCR value of 10.3. Treatments T1, T2, T3 and T4 were all profitable since their value-to cost ratio (VCR)>1, but only T2 and T3 show a VCR (value-to-cost ratio) greater than 2 and are thus recommended for popularization.
Primus Azinwi Tamfuh,
Djibril Gus Kouankap Nono,
Carine Naah Yuh Ndofor,
David Guimolaire Nkouathio,
Comparative Effects of Basalt Dust, NPK 20-10-10 and Poultry Manure on Soil Fertility and Cucumber (Cucumis sativus) Productivity in Bafut (Cameroon Volcanic Line), Earth Sciences.
Vol. 8, No. 6,
2019, pp. 323-334.
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