Investigating chemical control of dodder (Cuscuta monogyna Vahl.) in vineyards
2014
Bazoobandi, Mohammad, Khorasan Razavi Agricultural and Natural Resources Research Center | Torabi, Hossein
The present investigation was conducted to evaluate the efficiency of some herbicides in control of dodder (Cuscuta monogyna Vahl.) and some other weeds in vineyards. The experiment was conducted at a highly dodder infested vine yard of Mashhad during 2012-213. Treatments were laid out in a randomized complete block design with three replications. Treatments were consisted of pendimethalin (stomp EC33%) 4 and 5 Lha-1, Imazethapyr (pursuit SL10%) 0.7 and 1 Lha-1, propyzamide (kerb WP500) 1.5, 2 and 2.5 Kgha-1, ethofumesate (SC42%) 1.5, 2 and 2.5 Lha-1.Weedy treatment was included. Weeds dry matter and number, dodder number and dry matter, EWRC and grape yield were recorded. The results showed that 95% reduction in dry matter of dodder was observed subsequent to application of 4 and 5 Lha-1 of Pendimetahline . Maximum effect on weeds dry matter were observed with application of 5 Lha-1 of pendimetaline (69% reduction compared to weedy plots). 1.5 and 2 Lha-1 application of propyzamide did not significantly affected this trait. Except pendimetaline and propyzamide (4.5 Lha-1), all other treatments adversely affected Grape plants (3.27-20.3% based on EWRC). Concerning grape yield, no significant difference was observed among treatments. Key words:
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