Mechanical weed control of corn with emphasis on reduced dose of herbicide

Subject Areas : Journal of Plant Ecophysiology

arash  roozbehani ¹ (گروه زراعت و اصلاح نباتات، واحد رودهن، دانشگاه آزاد اسلامی، رودهن)

Received: 2015-05-18 Accepted : 2015-05-18 Published : 2015-05-01

Keywords: Yield, Cultivation, Chemical control, yield components and corn,

Abstract :

To evaluate the effect of mechanical weed control on yield and yield components of corn (Zea mays L.) with emphasis on reduced dose of herbicide an experiment was conducted as split plot based on Randomized Complete Blocks Design with three replications in 2008 at Agricultural Research Station in Karaj region. Treatments were; Mechanical weed control (No applying of cultivator or controlled, one time applying of cultivator at 4 week after planting and two times applying of cultivator at 4 and 6 weeks after planting) as the main plot, and combination doses of atrazine and alachlor mixture (0% or  controlled, 25%, 50%, 75%, and 100%) as the sub plot. The results showed that the effect of all treatments on all traits were significant. Means comparison showed that among different treatment levels; two times applying of cultivator at 4 and 6 weeks after planting and combination doses of atrazine and alachlor’s mixture (75%, and 100%) were superior than the other treatments and cause to decrease weed biomass and to increase yield and yield components of corn.