عنوان مقاله [English]
نویسندگان [English]چکیده [English]
In order to study the effect of rimsulfuron application time and dose on weed control and potato tuber yield, a field experiment was carried out in Ardabil during 2014. Treatments included different rates of rimsulfuron (0, 5, 10, 20, 30, 40 and 50 g ai ha-1), and rimsulfuron application time at different potato growing stages (potato emergence, stolon initiation and potato tuber bulking). A weed free treatment was also considered as control for evaluating potato yield components. Results showed that application of 50 g ai ha-1 rimsulfuron reduced weed biomass by 94.6 %. Which was not statistically different from 30 and 40 g ai ha-1. Among rimsulfuron application times, potato emergence produced maximum percent reduction of weed biomass. On the other hand, application of 50 g ai ha-1 at potato emergence stage caused the highest mean weight of potato tuber, tuber per plant and total tuber yield. There was no significant difference between 20, 30 and 40 g ai ha-1. Visual assessment results showed that rimsulfuron had minimum harm in potatoes which was negligible.
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