Donnie K. Miller, Jason A. Bond, Thomas R. Butts, L. C. Webster, K. B. Kouamé
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引用次数: 0
Abstract
Tiafenacil is a new non-selective protoporphyrinogen IX oxidase (PPO)-inhibiting herbicide with both grass and broadleaf activity labeled for preplant application to corn, cotton, soybean, and wheat. Early season rice emergence and growth often coincide in the mid-southern U.S. with preplant herbicide application in cotton and soybean, thereby increasing the opportunity for off-target herbicide movement from adjacent fields. Field studies were conducted to identify any deleterious impacts of reduced rates of tiafenacil (12.5 to 0.4% of the lowest labeled application rate of 24.64 g ai ha-1) applied to 1- or 3-leaf (lf) rice. Visual injury 1 week after treatment (WAT) for the 1- and 3-lf growth stages ranged from 50 to 7% and 20 to 2%, respectively, while at 2 WAT these respective ranges were 13 to 2% and no injury observed. Tiafenacil at applied rates had no negative season-long impact as early season visual injury observed was not manifested in a reduction in rice height 2 WAT or rough rice yield. Application of tiafenacil directly adjacent to rice in early vegetative stages of growth should be avoided as visual injury will occur. In cases where off-target movement does occur, however, impacted rice should be expected to fully recover with no impact on growth and yield, assuming adequate growing conditions and agronomic/pest management are provided.
期刊介绍:
Weed Technology publishes original research and scholarship in the form of peer-reviewed articles focused on understanding how weeds are managed.
The journal focuses on:
- Applied aspects concerning the management of weeds in agricultural systems
- Herbicides used to manage undesired vegetation, weed biology and control
- Weed/crop management systems
- Reports of new weed problems
-New technologies for weed management and special articles emphasizing technology transfer to improve weed control
-Articles dealing with plant growth regulators and management of undesired plant growth may also be accepted, provided there is clear relevance to weed science technology, e.g., turfgrass or woody plant management along rights-of-way, vegetation management in forest, aquatic, or other non-crop situations.
-Surveys, education, and extension topics related to weeds will also be considered