Peer-reviewed publications

2024

Bautze, D., Karanja, E., Musyoka, M., Rüegg, J., Goldmann, E., Kiboi, M., Kampermann, I., Cotter, M., Riar, A., Matheri, F., Mwangi, E., Mucheru-Muna, M., Wambui, H., Anyango, J.J., Ndung’u, S., Tanga, C., Fiaboe, Mbaka, J., Muriuki, A., Kamau, D., Adamtey, N. (2024). Closing the crop yield gap between organic and conventional cropping systems in Kenya: Long-term trial data indicates agronomic viability. European Journal of Agronomy. Read more

Matheri, F., Ongeso, N., Bautze, D., Runo, S., Mwangi, M., Kambura, A., Karanja, E., Tanga, C., Kiboi, M. (2024). The Overlooked Decomposers: Effects of Composting Materials and Duration on the Mesofauna Mediating Humification. Sustainability, 16, 6534. Read more

Mwende Munyoki, N., Muthomi, J., Kilalo, D., Bautze, D., Kiboi, M.,Mwangi,  E., Karanja, E., Matheri, F., Adamtey, N., Akutse, K. S., Cheseto, X. (2024). Scientific validation of plant extracts used by farmers in the management of bean flower thrips on French beans in Kenya. Journal of Applied Entomology, 00, 1–10. Read more

Riar, A., Goldmann, E., Bautze, D., Rüegg, J., Bhullar, G.S., Adamtey, N., Schneider, M., Huber, B., Armengot, L. (2024). Farm gate profitability of organic and conventional farming systems in the tropic. International Journal of Agricultural Sustainability, 22:1. Read more

2023

Kampermann, I., Bautze, D., Mapili, M., Musyoka, M., Karanja, E., Fiaboe, K.K.M., Irungu, J., Adamtey, N. (2023). Insecticide contamination in organic agriculture: Evidence from a long-term farming systems comparison trial. Crop Protection. 177: 106529. Read more

Krause, H. M., Ono-Raphel, J. G., Karanja, E., Matheri, F., Lori, M., Cifuentes, Y., Glaeser, S. P., Gattinger, A., Riar, A., Adamtey, N., Mäder, P. (2023). Organic and conventional farming systems shape soil bacterial community composition in tropical arable farming. Applied Soil Ecology, 191, 105054. Read more

Matheri, F., Kambura, A.K., Mwangi, M., Karanja, E., Adamtey, N., Wanjau, K., Mwangi, E., Tanga, C.T., Bautze, D., Runo, S. (2023) Evolution of fungal and non-fungal eukaryotic communities in response to thermophilic co-composting of various nitrogen-rich green feedstocks. PLOS ONE 18(5). Read more

2022

Atandi, J. G., et al. (2022) Organic maize and bean farming enhances free-living nematode dynamics in sub-Saharan Africa. Agriculture, Ecosystems & Environment, 327: 107846. Read more

Wainaina, S., Waititu, S., Salifu, D., Mwalili, S., Karanja, E., Adamtey, N., Tonnang, H., Matheri, F., Mwangi, E., Bautze, D., Tanga, C. (2022). Modeling the Incidence of Maize Spotted Stem-Borer (Chilo partellus) Infestation Under Long-Term Organic and Conventional Farming Systems. International Journal of Data Science and Analysis. Vol 8 (6): 169-181. Read more

2020

Anyango, J.J., Bautze, D., Fiaboe, K.K.M., Lagat, Z. O., Muriuki, A. W., Stöckli, S., Riedel, J., Onyambu, G. K., Musoyoka, M. W., Karanja, E. N., Adamtey, N. (2020). The impact of conventional and organic farming on soil biodiversity conservation: a case study on termites in the long-term farming systems comparison trials in Kenya. BMC Ecol 20, 13. Read more

Karanja, E. N., Fliessbach, A., Adamtey, N., Kambura, A. K., Musyoka M., Fiaboe, K. K. M., Mwirichia, R. (2020). Diversity and structure of prokaryotic communities within organic and conventional farming systems in central highlands of Kenya. PLOS One. Read more

Karanja, E. N., Fliessbach, A., Adamtey, N., Kambura, A. K., Musyoka M., Fiaboe, K. K. M., Mwirichia, R. (2020). Fungal diversity within organic and conventional farming systems in Central Highlands of Kenya. African Journal of Microbiology Research, 14(6): 242-258. Read more

Mwangi, E. N., Ngamau, C. N., Wesonga, J. M., Karanja, E. N., Musyoka, M. W., Matheri, F., Fiaboe, K. K. M., Bautze, D., Adamtey, N. (2020). Managing Phosphate Rock to Improve Nutrient Uptake, Phosphorus Use Efficiency and Carrot Yields in Kenya. Journal of Soil Science and Plant Nutrition. Read more

von Arb, C., Bünemann, E.K., Schmalz, H., Portmann, M., Adamtey, N., Musyoka, M.W., Frossard, E., Fliessbach, A. (2020). Soil quality and phosphorus status after nine years of organic and conventional farming at two input levels in the Central Highlands of Kenya. Geoderma, 362: 114112. Read more

2019

Anyango, J. J., Bautze, D., Fiaboe, K. K. M., Lagat, Z. O., Muriuki, A. W., Stöckli, J., Onyambu, G. K., Musoyoka, M. W., Karanja, E. N., Adamtey, N. (2019). Termite-Induced Injuries to Maize and Baby Corn under Organic and Conventional Farming Systems in the Central Highlands of Kenya. Insects, 10(10): 367. Read more

Musyoka, M.W., Adamtey, N., Bünemann, E.K., Muriuki, A.W., Karanja, E.N., Mucheru-Muna, M., Fiaboe, K.K.M., Cadisch,G. (2019). Nitrogen release and synchrony in organic and conventional farming systems of the Central Highlands of Kenya. Nutr Cycl Agroecosyst, 113: 283. Read more

Musyoka, M.W., Adamtey, N., Muriuki, A.W., Bautze, D., Karanja, E.N., Mucheru-Muna, M., Fiaboe, K.K.M., Cadisch,G. (2019). Nitrogen leaching losses and balances in conventional and organic farming systems in Kenya. Nutr Cycl Agroecosyst, 114: 237. Read more

2017

Atandi, J. G., Haukeland, S., Kariuki, G. M., Coyne, D. L., Karanja, E. N., Musyoka, M. W., Fiaboe, K. K. M., Bautze, D., Adamtey, N. (2017). Organic farming provides improved management of plant parasitic nematodes in maize and bean cropping systems. Agriculture, Ecosystems & Environment, 247: 265-272. Read more

Musyoka, M. W., Adamtey, N., Muriuki, A. W. and Cadisch, G. (2017). Effect of organic and conventional farming systems on nitrogen use efficiency of potato, maize and vegetables in the Central highlands of Kenya. European Journal Of Agronomy, 86: 24-36. Read more

2016

Adamtey, N., Musyoka, M. W., Zundel, C., Cobo, J. C., Karanja, E., Fiaboe, K. M., et al. (2016). Comparison of conventional and organic farming systems in the sub-humid zones of the Central highlands of Kenya: Productivity and profitability of maize-based cropping systems. Agriculture, Ecosystems and Environment, 235: 61-79. Read more

2012

Forster, D., Adamtey, N., Messmer, M.M., Pfiffner, L., Baker, B., Huber, B., Niggli, U. (2012). Organic Agriculture – Driving Innovations in Crop Research. In: Agricultural Sustainability - Progress and Prospects in Crop Research. Bhullar G, Bhullar N (eds.). pp 21-46. Elsevier. Read more