تأثیر ورمی‌کمپوست و کاربرد پاراکوات هدایت شده بر علف‌های‌ هرز و عملکرد سیب‌زمینی

In order to investigate the effect of vermicompost and directed application of paraquat herbicide on weeds and yield of potato cv. Ramos, a split plot experiment in a randomized complete block design with three replicates was established at the College of Agriculture, Shiraz University, Iran in 2012. Treatments included directed application of paraquat at different levels (0, half a dose, twice application of half a dose, recommended dose (3 L ha-1)) along with a hand weeding control, and vermicompost fertilizer which was applied at three levels (0, 3, 6 t ha-1). The results showed that in the recommended dosage of herbicide with all the fertilizer rates the dry weight of the weeds was significantly the lowest. The yield of potato was significantly the highest in the application of recommended dosage of paraquat and 6 t ha-1 of vermicompost. It was concluded that in order to obtain the most yield and the best control of weeds the recommended dosage of paraquat and 6 t ha-1 vermicompost could be applied.