Abstract
Abstract Yellow nutsedge ( Cyperus esculentus L.) is a major weed problem in many perennial woody crops. Dual 8E4 (metolachlor) at 4.5, 6.7, 9.0 and 13.5 kg/ha (4, 6, 8 and 12 lb/A) was evaluated in the field for 4 years to determine phytotoxicity to 11 varieties of azaleas. Also evaluated were Ericaceous species including coast leucothoe, compact Japanese andromeda, and Rhododendron × ‘PJM’. Fall or spring applications of metolachlor at rates up to 13.5 kg/ha (12.0 lb/A) caused no injury to the established azaleas ‘Delaware Valley White’, ‘Hershey Red’ and ‘Hinocrimson’. Some temporary injury occurred to newly planted ‘Hinocrimson’ azaleas treated with metolachlor at 6.7 kg/ha (6.0 lb/A). A July application at this same rate caused some temporary injury to established ‘Delaware Valley White’, ‘Double Pink’, ‘Hershey Red’, ‘Hot Shot’, ‘Karen’, ‘Lady Robin’, ‘Rosebud’ and ‘Tradition’ azaleas and ‘Coast lecothoe’ and ‘PJM’ rhododendron. No reduction in crop quality or size was observed with any species at time of crop harvest.
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Claims 4
Claim · model-written summary
Fall or spring metolachlor up to 13.5 kg/ha caused no injury in three established azalea varieties.
- Taxon
- azalease0
- Material
- ‘Delaware Valley White’, ‘Hershey Red’ and ‘Hinocrimson’e0
- Treatment
- metolachlor at rates up to 13.5 kg/hae0
- Outcome
- Fall or spring applications of metolachlor at rates up to 13.5 kg/ha (12.0 lb/A) caused no injury to the established azaleas ‘Delaware Valley White’, ‘Hershey Red’ and ‘Hinocrimson’e0
- Direction
- no injurye0
Not reportedComparator
Verbatim
e0“Fall or spring applications of metolachlor at rates up to 13.5 kg/ha (12.0 lb/A) caused no injury to the established azaleas ‘Delaware Valley White’, ‘Hershey Red’ and ‘Hinocrimson’”
Claim · model-written summary
Metolachlor at 6.7 kg/ha temporarily injured newly planted Hinocrimson azaleas.
- Taxon
- azalease0
- Material
- ‘Hinocrimson’e0
- Treatment
- metolachlor at 6.7 kg/hae0
- Outcome
- Some temporary injury occurred to newly planted ‘Hinocrimson’ azaleas treated with metolachlor at 6.7 kg/ha (6.0 lb/A)e0
- Direction
- injurye0
Not reportedComparator
Verbatim
e0“Some temporary injury occurred to newly planted ‘Hinocrimson’ azaleas treated with metolachlor at 6.7 kg/ha (6.0 lb/A)”
Claim · model-written summary
July metolachlor at 6.7 kg/ha temporarily injured established azaleas, Coast lecothoe and PJM rhododendron.
- Taxon
- azalease0
- Treatment
- A July application at this same ratee0
- Outcome
- A July application at this same rate caused some temporary injury to established ‘Delaware Valley White’, ‘Double Pink’, ‘Hershey Red’, ‘Hot Shot’, ‘Karen’, ‘Lady Robin’, ‘Rosebud’ and ‘Tradition’ azaleas and ‘Coast lecothoe’ and ‘PJM’ rhododendrone0
- Direction
- injurye0
Not reportedComparator
Verbatim
e0“A July application at this same rate caused some temporary injury to established ‘Delaware Valley White’, ‘Double Pink’, ‘Hershey Red’, ‘Hot Shot’, ‘Karen’, ‘Lady Robin’, ‘Rosebud’ and ‘Tradition’ azaleas and ‘Coast lecothoe’ and ‘PJM’ rhododendron”
Claim · model-written summary
No species showed reduced crop quality or size at harvest.
Verbatim
e0“No reduction in crop quality or size was observed with any species at time of crop harvest”
t0“Ericaceous Plants”