Shortening critical period of weed control at soybean by residual herbicide mixtures

Integrated Weed Management: Soybean Seeding Rate and Residual Herbicide

Increased soybean seed cost in recent years has generated interest in reducing seeding rates to maintain consistent economic returns. However, low seeding rates result in reduced established plant stands with slower canopy development, and canopy development is touted as an important element of integrated weed management (IWM). IWM practices have become even more important to slow the developme...

Critical period of weed control in soybean (Glycine max) as influenced by starter fertilizer

The critical period of weed control (CPWC) in crops depends on many factors including supply and availability of nutrients. In order to investigate the effect of starter fertilizer on the CPWC in soybean a field experiment in a randomized complete block design with four replications in a factorial arrangement was conducted at the Agricultural Research Farm of Razi University, Kermanshah, Iran. ...

Critical Period of Weed Control in Aerobic Rice

Critical period of weed control is the foundation of integrated weed management and, hence, can be considered the first step to design weed control strategy. To determine critical period of weed control of aerobic rice, field trials were conducted during 2010/2011 at Universiti Putra Malaysia. A quantitative series of treatments comprising two components, (a) increasing duration of weed interfe...

The critical period of weed control in corn in Birjand region, Iran

The critical period for weed control (CPWC) is the period in the crop growth cycle during which weeds must be controlled to prevent unacceptable yield losses. Field studies were conducted in 2005 and 2006 in the University of Birjand at the south east of Iran to determine CPWC of corn using a randomized complete block design with 14 treatments and three replications. The treatments consisted of...

Critical period for weed control: the concept and data analysis