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1. Nyakach, S., Owido, S.F.O., Onyando, J.O (2017) Effect of firing time and temperature on selected physical properties of Black Cotton Soil. Journal of Agricultural Science and Engineering Vol. 3(1) 2017: 1-12

2. Nyakach, S., Onyando, J.O., Owido, S.F.O. (2017) Evaluation of Black Cotton Soil as a Hydoponic Medium. World Journal of Agricultural Research Vol. 5(2) 2017: 88-93

3. Nyakach, S., Owido, S.F.O., Onyando, J.O (2018) Evaluation of Plant Growth on Expanded Black Cotton Soil. Sustainable Agriculture Research Vol.7(2): 2018: 41-45. 

4. Doti, B.S., Nyakach, S., Nyaanga, J., Ingasia O., Nyaanga D (2021) Optimization of Selected Pyrolysis Parameters in Pyroligneous Acid Production rate and quality from Acacia Twigs. Journal of Energy, Environmental and Chemical Engineering Vol. 6(4) 2021: 114-123

5. Okinda F.W., Nyakach, S.,  Nyaanga, D.M. (2021) Effect of Wheel Traffic on Selected Soil Physical Properties. Journal of Engineering in Agriculture and Environment Vol. 7(2) 2021: 28 - 39

6. Doti, B.S., Nyaanga, D.M.,Nyakach, S., Nyaanga, J (2022) Optimization of Pyrolysis Parameters in Production of Pyroligneous acid from Acacia Twigs. Journal of Engineering in Agriculture and Environment Vol. 8(1) 2022: 1 - 13

7. Doti S.B., Nyaanga D., Nyakach, S., Nyaanga, J., Ingasia O.(2022) Biochar Production and Quality optimization using Surface Response Methodology Technique. Applied research Journal of Environmental Engineering Vol. 4(1) 2022: 1-16

8. Doti S.B., Nyaanga D., Nyakach, S., Nyaanga, J., Ingasia O. (2022) Effect of Selected Pyrolysis Parameters on the Production and Quality of Biochar and Pyroligneous Acid from Biomass. Journal of Engineering in Agriculture and Environment Vol. 8(2) 2022: 15 – 35

9. Nyakach, S., Onyando, J.O., Owido, S.F.O. (2022) Estimation of Hydraulic Properties of Expanded Black Cotton soil. Journal of Engineering in Agriculture and Environment Vol. 8(2) 2022: 62 – 72

10. Sesani P.B.,Okwany R.O., Nyakach S. (2022) Optimization of Flushing Pressure, Time, Acid and Chlorine Treatment on Drip Emitter recovery using Treated Effluent. Journal of Engineering in Agriculture and Environment Vol. 8(3) 2022: 29 – 48

11. Doti S.B., Nyaanga D., Nyakach, S. (2023) Designing, Developing and Testing of a Pyrolysis System: A Case study of Biochar and Pyroligneous Acid. Journal of Energy, Environmental and Chemical Engineering Vol. 8(1) 2023: 1-9

12. Nasirembe W., Rotich E., Ruttoh R.,, Nyakach S., Maingi S., Cheboswony R., Sevu M., (2023) Evaluation of a Modified Multipurpose Cassava Processing Machine for Size Reduction. Journal of Biology, agriculture and Healthcare Vol 13(8): 13-18