in order to investigate efficacy of the integrated weed management in cotton fields, three experiments were carried out in three cotton growing areas of iran, including varamin, khorasan, fars in 2006. these experiments were conducted in randomized complete block design with 13 treatments and 4 replications. one of the pre plant soil mixtured herbicides (trifluralin 48% ec and ethalfluralin 33....

The objective of this study was to compare season-long weed control from single and sequential herbicide applications in corn. Control all species generally good (90% or more) early the season regardless preemergence (PRE) herbicide. However, Russian thistle Palmer amaranth best later when a PRE followed by postemergence (POST) treatment. While treatments increased yields compared untreated con...

The development of controlled-release formulations of alachlor to diminish its leaching in sandy soils, avoiding groundwater contamination and maintaining its efficacy, was studied. For this purpose, ethylcellulose (EC) microencapsulated formulations (MEFs) of alachlor were prepared under different conditions and applied to soil columns to study their mobility. The results show that in all case...

The application rates for conventional herbicide formulations are generally greater than the recommended dosage, in order to overcome losses from degradation, leaching, volatilization, and sorption during the time needed for weed control. All these factors have encouraged the development of controlled release formulations (CRFs), which can reduce herbicides levels in the environment since less ...

The rapid evolution of herbicide resistance poses a significant threat for conventional agricultural practices. In practice, herbicide resistance seems to be a very complicated problem to deal with. Extension can play a significant role in managing herbicide resistance educating farmers on the main advantages and disadvantages of the available methods aiming to control and minimize herbicide re...