Large areas of abandoned cropland in the world can be reforested with native shrubs and trees to gain a number of environmental benefits. In abandoned Mediterranean croplands, establishment and growth of woody plants are limited by high radiation and low water availability during summer, and weeds are strong competitors for resources, particularly water. We conducted a 3-year experiment in cent...

Weedy and invasive plants cost Americans billions of dollars annually in crop damage and lost earnings. Various Western states have reported annual weed control costs in the hundreds of millions of dollars. Herbicides account for more than 72 per cent of all pesticides used on agricultural crops. $4 billion was spent herbicides in the US in 2006 and 2007 (Grube, et al, 2011). The USDA Economic ...

Data collected during our on-going studies on the phytodiversity in the Upper Bari Doab Region of Punjab, show an inverse relationship between the level of phytodiversity and incidence of the congress grass-Parthenium hysterophorus. The open vegetation at Khiala Khurd (31 degrees -33' N-74 degrees .18' E), a site typical of the whole region, has a Shannon-Weaver index value of 2.544, which is f...

The need to control glyphosate [N-(phosphonomethyl)glycine]-resistant weed biotypes with tillage and preemergence herbicides in glyphosate-resistant crops (GRCs) is causing a reduction in no-tillage hectarage thereby threatening the advances made in water quality over the past decade. Consequently, if environmental gains afforded by GRCs are to be maintained, then an in-field best management pr...