Abstract

Many of the chemicals used in pesticides are persistent soil, groundwater and drinking water contaminants. Use of efficient methods of weed integrated management with as regards environmental sustainability and reduce pollution as well as increased crop yield and also weed resistance to herbicides is essential. An experiment was conducted in 2010 in the north of Khuzestan in Iran. Experiment treatments were compared in a split plot design by a randomized completely block design with 4 replication. The used variety of maize was S.C. 704. Main factors included 3 levels of cultivation, once, twice and without cultivation. Sub factors were weed control by application of indicated herbicide in 4 levels: Nicosulfuron, Foramsulfuron, Atrazin + Alachlor and no control. The results conducted that the highest of weed control followed the highest yield by ranged 15.47 ton per hectare related to Nicosulfuron + once cultivation treatment and lowest yield by ranged 10.56 ton per hectare related to Atrazin + Alachlor + once cultivation treatment. There were difference between treatments in yield and yield components during the whole growing season, the kind of index harvest in the level of probability 1% and all in the level of 5% significant.

Key words: Maize, dual herbicides, Atrazine, biology pollution, weed integrated management.