The Critical Period for Weed Control (CPWC) in Potato (Solanum tuberosum L.)
Küçük Resim Yok
Tarih
2015
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Univ Agr Sci & Veterinary Med Cluj-Napoca
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
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 CO 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.
Açıklama
Anahtar Kelimeler
competition, non-linear regression, potato crop, weed interference, yield
Kaynak
Notulae Botanicae Horti Agrobotanici Cluj-Napoca
WoS Q Değeri
Q4
Scopus Q Değeri
Q2
Cilt
43
Sayı
2
