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P. A. Opala

Observed names: Opala Peter, Opala, Peter, P. A. OPALA, P. Opala, P.A. Opala, Peter A. Opala, Peter Asbon Opala, Peter Opala
Institution: Maseno University
ORCID: 0000-0002-9316-8704
Observed ORCID: 0000-0002-9316-8704
OpenAlex ID: A5007146580
Effects of Organic and Inorganic Materials on Soil Acidity and Phosphorus Availability in a Soil Incubation Study
2012 · P. A. Opala, J. R. Okalebo, et al. · ISRN Agronomy · 77
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Immediate and Residual Effects of Lime and Phosphorus Fertilizer on Soil Acidity and Maize Production in Western Kenya
2013 · P. O. KISINYO, C. O. OTHIENO, et al. · Experimental Agriculture · 74
Symbiotic Efficiency of Native Rhizobia Nodulating Common Bean (Phaseolus vulgaris L.) in Soils of Western Kenya
2014 · Fanuel Kawaka, Mathews M. Dida, et al. · International Scholarly Research Notices · 54
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Influence of Lime and Phosphorus Application Rates on Growth of Maize in an Acid Soil
2017 · Peter Asbon Opala · Advances in Agriculture · 52
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Phosphorus Sorption and Lime Requirements of Maize Growing Acid Soils of Kenya
2013 · P. O. Kisinyo, C. O. Othieno, et al. · Sustainable Agriculture Research · 50
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Recent advances towards understanding and managing Kenyan acid soils for improved crop production
2014 · P. O Kisinyo, P. A. Opala, et al. · African Journal of Agricultural Research · 43
Effect of organic and inorganic phosphorus sources on maize yields in an acid soil in western Kenya
2009 · P. A. Opala, J. R. Okalebo, et al. · Nutrient Cycling in Agroecosystems · 43
Depletion of phosphate rock reserves and world food crisis: Reality or hoax?
2020 · Peter Oloo Kisinyo, Peter Asbon Opala · African Journal of Agricultural Research · 38
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Effects of cutting position of rose rootstock cultivars on rooting and its relationship with mineral nutrient content and endogenous carbohydrates
2017 · Millicent Adhiambo Otiende, Julius Omondi Nyabundi, et al. · Scientia Horticulturae · 38
Genetic diversity of symbiotic bacteria nodulating common bean (Phaseolus vulgaris) in western Kenya
2018 · Fanuel Kawaka, Huxley Makonde, et al. · PLoS ONE · 28
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Effects of Combining Organic Materials With Inorganic Phosphorus Sources on Maize Yield and Financial Benefits in Western Kenya
2009 · P. A. OPALA, C. O. OTHIENO, et al. · Experimental Agriculture · 27
Comparison of effects of phosphorus sources on soil acidity, available phosphorus and maize yields at two sites in western Kenya
2012 · Peter Asbon Opala, John Robert Okalebo, et al. · Archives of Agronomy and Soil Science · 23
Micro-Dosing of Lime, Phosphorus and Nitrogen Fertilizers Effect on Maize Performance on an Acid Soil in Kenya
2015 · P. O. Kisinyo, P. A. Opala, et al. · Sustainable Agriculture Research · 20
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Recent Advances in the Use of Tithonia diversifolia Green Manure for Soil Fertility Management in Africa: A Review
2020 · P. A. Opala · Agricultural Reviews · 17
Effect of nitrogen sources on the yield of common bean ( Phaseolus vulgaris ) in western Kenya
2018 · Fanuel Kawaka, Mathews Dida, et al. · Journal of Plant Nutrition · 14
Comparative effects of lime and organic materials on selected soil chemical properties and nutrient uptake by maize in an acid soil
2011 · P. A. Opala · Archives of applied science research · 12
Effect of Phosphate Fertilizer Application Methods and Nitrogen Sources on Maize in Western Kenya: an Agronomic and Economic Evaluation
2007 · P. A. OPALA, B. A. JAMA, et al. · Experimental Agriculture · 11
Effects of Tithonia diversifolia, farmyard manure and urea, and phosphate fertiliser application methods on maize yields in western Kenya
2015 · Peter Asbon Opala, Peter Oloo Kisinyo, et al. · Der Tropenlandwirt · 10
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The Effect of Minjingu Phosphate Rock and Triple Superphosphate on Soil Phosphorus Fractions and Maize Yield in Western Kenya
2014 · Robert Orangi Nyambati, Peter Asbon Opala · ISRN Soil Science · 8
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Effects of Vermicompost, Tithonia Green Manure and Urea on Quality of Swiss Chard (Beta Vulgaris L. Var. Cicla L.) in Kenya
2020 · N. B. Rioba, P. A. Opala, et al. · Sustainable Agriculture Research · 7
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Response of Sorghum (Sorghum bicolor (L.) Munch) and Chemical Characteristics of Soil to Organic and Inorganic Fertilizers on Kenyan Lower Midlands Acid Soil
2019 · P. O. Kisinyo, P. A. Opala, et al. · International Journal of Plant & Soil Science · 6
Response of the African nightshade to phosphate fertilizer application in Western Kenya
2013 · Christopher Tuwei, P. A. Opala, et al. · Archives of applied science research · 5
Residual effects of lime and phosphorus applications on soil and maize (Zea mays L.) performance in a Kenyan highlands acid soil
2009 · Kisinyo Peter, Gudu Samuel, et al. · 5
The Use of Phosphate Rocks in East Africa: A Review
2022 · P.A. Opala · Agricultural Reviews · 3
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Response of Maize to Organic and Inorganic Sources of Nutrients in Acid Soils of Kenya
2014 · P. Opala · Journal of Experimental Agriculture International · 3
Works count: 40
Citation count: 683
H-index: 14
I10-index: 18
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