Influence of herbicides-based weed management in chickpea

Abstract

Weeds are one of the most problematic factors for chickpea cultivation due to their negative effects on yield reduction in Iran. In the present investigation, new PRE-herbicide (flumioxazin) with different rates as IBS (incorporated before sowing), PRE, and Early-post with previously used herbicides were compared for controlling weeds and subsequently increasing in grain yield of chickpea. Results showed that PRE flumioxazin at rates 50, 75, and 100 g ai ha-1, oxyflourfen and flumioxazin + pyridate reduced total dry weed biomass 79 to 83.2%. These reductions (total dry weed biomass) were 59 to 73% by application of PRE flumioxazin at 50, 75 and 100 g ai ha-1, oxyfluorfen, flumioxazin + pyridate and pyridate in Kurdistan and 70 to 74.5% in Hamedan by application of IBS and PRE flumioxazin at 50, 75 and 100 g ai ha-1, oxyfluorfen, flumioxazin + pyridate. The grain yield of chickpea was greatest [Kermanshah (1489.5 kg ha-1), Hamedan (312 kg ha-1), and Kurdistan (2015 kg ha-1)] in PRE flumioxazin at 50 g ai ha-1 application after hand weeding. According to the results, PRE flumioxazin at 50 g ai ha-1 is the most suitable treatment to control broadleaf weeds and increase yield in autumn-sown chickpea.