Weed Species Shifts
Part 2, Section 1: Pest Management
WEED SPECIES SHIFTS
Courtesy of M. J. Horak, Biologist, Monsanto
Shifts or changes in the abundance and types of weeds within agricultural systems are common. These shifts can occur for a number of reasons and may result from cultural, mechanical, or chemical weed management strategies. The right combination of weeds and relying too heavily on any one practice is often the most common cause. Some of the concepts associated with weed species shifts are discussed below.