An investigation on the efficacy of Metribuzin in weeds control of wheat fields.
2008
Zand, Eskandar | Baghestani, Mohammad A`li | Sarani, Mansur | Pur Azar, Reza | Yunes Abadi, Ma`sumeh | Bana Kashani, Fatemeh | Deaji, Ahmad | Yavari Nezhad, Hassan | Jabbari, Sa`id
In order to study the efficacy of metribuzin in weeds control of wheat fields, a set of trails were carried out at Varamin, Karaj, Ahvaz, Gorgan and Zabol during 2005-2006. Treatments were arranged in a factorial experiment based on RCBD with four replications. Treatments consisted of three cultivars, four dose of metribuzin (0, 0.5, 0.75 and 1 kg/ ha) and two time of spraying (preemergence and post emergence). Dry matter and the number of weeds were measured in 30 day after post emergence apraying and wheat yield was harvested at the end of growing season. According to the result, wheat yield and weed control were improved, while the dose of herbicide increased. The response of cultivar to metribuzin also was different, so that, the effect of preemmergece application of metribuzin on yield and weed control was better than its preemergence application. Generally, as non of cultivars showed completely tolerance to metribuzin and in the other hand, non of metribuzin dose could not control weeds completely, then it appear that metribuzin is not a recommendable herbicide for weed control in wheat fields of Iran.
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