The Critical Period for Weed Control (CPWC) in Potato (<i>Solanum tuberosum</i> L.)

  • Dogan ISIK Erciyes University, Faculty of Agriculture, Department of Plant Protection, Kayseri
  • Adem AKCA KWS Turk Tarim, Kayseri
  • Emine KAYA ALTOP Ondokuz Mayıs University, Faculty of Agriculture, Department of Plant Protection, Samsun
  • Nihat TURSUN Inonu University, Faculty of Agriculture, Department of Plant Protection, Malatya
  • Husrev MENNAN Ondokuz Mayıs University, Faculty of Agriculture, Department of Plant Protection, Samsun

Abstract

Accurate assessment of crop-weed control period is an essential part for planning an effective weed management for cropping systems. Field experiments were conducted during the seasonal growing periods of potato in 2012 and 2013 in Kayseri, Turkey to assess critical period for weed control (CPWC) in potato. A four parameter log-logistic model was used to assist in monitoring and analysing two sets of related, relative crop yield. Data was obtained during the periods of increased weed interference and as a comparison, during weed-free periods. In both years, the relative yield of potato decreased with a longer period of weed-interference whereas increased with increasing length of weed free period. In 2012, the CPWC ranged from 112 to 1014 GDD (Growing Degree Days) which corresponded to 8 to 66 days after crop emergence (DAE) and between 135-958 GDD (10 to 63 DAE) in the following year based on a 5% acceptable yield loss. Weed-free conditions needed to be established as early as the first week after crop emergence and maintained as late as ten weeks after crop emergence to avoid more than 5% yield loss in the potato. The results suggest that CPWC could well assist potato producers to significantly reduce the expense of their weed management programs as well as improving its efficacy.

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Published
2015-12-10
How to Cite
ISIK, D., AKCA, A., KAYA ALTOP, E., TURSUN, N., & MENNAN, H. (2015). The Critical Period for Weed Control (CPWC) in Potato (<i>Solanum tuberosum</i&gt; L.). Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 43(2), 355-360. https://doi.org/10.15835/nbha43210031
Section
Research Articles