Early season weed management options in water-seeded rice production

Two separate field studies were conducted at two locations near Crowley, Louisiana, to evaluate early season applications of florpyrauxifen and a prepackaged mixture of halosulfuron plus prosulfuron in water-seeded rice production. In each study, florpyrauxifen and halosulfuron plus prosulfuron were...

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Bibliographic Details
Published in:Weed technology 2024-01, Vol.38, Article e72
Main Authors: Webster, L. Connor, Rustom, Samer Y., Webster, Eric P., Stoker, Ben
Format: Article
Language:English
Subjects:
Cereal crops
Crop production
Crops
Flood management
Floods
Herbicides
Injury prevention
Rice
Seasons
Seeding
Soil mixtures
Soil surfaces
Soil water
Soils
Water
Weed control
Weeds
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Summary:Two separate field studies were conducted at two locations near Crowley, Louisiana, to evaluate early season applications of florpyrauxifen and a prepackaged mixture of halosulfuron plus prosulfuron in water-seeded rice production. In each study, florpyrauxifen and halosulfuron plus prosulfuron were applied at two rates and either applied to the soil surface 48 h before the seeding flooding and seeding, directly onto the pregerminated seed 24 h following seeding and immediately after removal of the seeding flood (SEED), and at pegging. Data suggest that both florpyrauxifen and halosulfuron plus prosulfuron have a role to play in water-seeded rice production. Crop injury of 19% was observed from applications of florpyrauxifen applied directly to pregerminated SEED. Additionally, 28% crop injury was observed when halosulfuron plus prosulfuron was applied directly to SEED. Due to crop injury observations, both herbicides should be avoided when the pregerminated seed is exposed to the soil surface after removing the seeding flood. These data suggest that florpyrauxifen may be a better option for postemergence application, whereas halosulfuron plus prosulfuron may be a better preemergence option in water-seeded rice production. Overall, the findings show that both herbicide technologies will provide adequate early-season weed control in water-seeded rice production.
ISSN:0890-037X
1550-2740
DOI:10.1017/wet.2024.31