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  • Effect of sowing time on productivity of Bt and non Bt cotton under climate change

    • Authors: Sankaranarayanan, K.;  Advisor: -;  Participants: Prakash, A. H.; Rajendran, K. (2020)

  • Climate change affects cotton production systems in multiple ways, and the impacts are expected to influence the national economy of India. The weather conditions prevailing during squaring, flowering and boll development stages determine the seed cotton yield. The needs for adaptation connected to optimizing the timing of critical growth stages to minimize stresses and enhance resource utilization. The adjusting of sowing times proved to be an important management technique for improving seed cotton yield.
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  • Temporal variation of pesticide mixtures in rivers of three agricultural watersheds during a major drought in the Western Cape, South Africa

    • Authors: Curchod, L.;  Advisor: -;  Participants: Oltramare, C.; Junghans, M.; Stamm, C.; Dalvie, M.A.; Röösli, M.; Fuhrimann, S. (2020)

  • Our study substantially widens the view on pesticide pollution in surface water compared to previous studies in Sub-Saharan Africa by targeting more than 200 pesticides using passive sampling systems. This broad assessment revealed the presence of 53 compounds, some of them in high concentrations, indicating possible adverse effects on biota and the quality of the ecosystem. Whether the observed concentration levels in the year 2017 were exceptional due to the lowest ever recorded rainfall and river discharge needs to be tested with additional data to better understand how pesticide pollution levels manifest under average rainfall and river discharge conditions.
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