The Effect of Rimsulfuron Application Time and dose on Weed Control and Potato (Solanum tuberosum) Tuber Yield

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.
Iranian Journal of Weed Science, Volume:12 Issue: 2, 2017
185 to 198  
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