Distribution of metamitron-resistant Chenopodium album L. in Belgian sugar beet.

Chenopodium album L. (fat-hen) with a Ser264-Gly mutation is resistant to photosystem II-inhibiting herbicides like the triazinone metamitron, a key herbicide in sugar beet. In recent years, this resistant biotype may cause unsatisfactory weed control in Belgian sugar beet.

Visual imperception in brain-injured adults: multifaceted measures.

Visual imperception denotes the disorders of perceptual functioning commonly associated with unilateral brain injury. Typically the same half of the visual fields of both eyes are affected on the side opposite to that of the brain injury. The disorder may have a sensory or an attentional basis or both, moreover, the patient is often not aware of the problem.