Abstract
The efficacy of reduced rates of metolachlor plus cyanazine for weed control in sweet corn was evaluated over a 2-yr period. Early postemergence (POST) and POST herbicide applications at reduced rates gave control of broadleaf weeds comparable to control at the 1 × rate, except for the early POST application at the ¼ × rate in 1993. Preplant incorporated (PPI) and preemergence (PRE) herbicide applications at reduced rates gave poor broadleaf weed control, except for the PRE application at the ½ × rate in 1993. Early POST applications at the ¼ × rate resulted in significantly reduced grass control in 1994, while POST applications at the ¼ × rate gave significantly reduced grass control both years. Generally, POST applications controlled broadleaf weeds better than early POST applications, while grass control with early POST applications was superior to POST applications at reduced rates. Preemergence and PPI applications at reduced rates gave poor broadleaf weed control but satisfactory grass control. Preplant incorporated applications at reduced rates resulted in reduced yield both years, while PRE applications at reduced rates reduced yield only in 1994. Early POST and POST applications at reduced rates did not affect sweet corn yield. The addition of adjuvants to the ¼ × application rate had no effect on weed control or yield.
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Claims 11
Claim · model-written summary
Reduced early POST and POST rates gave broadleaf control comparable to the full rate, except early POST quarter rate in 1993.
Verbatim
e0“Early postemergence (POST) and POST herbicide applications at reduced rates gave control of broadleaf weeds comparable to control at the 1 × rate, except for the early POST application at the ¼ × rate in 1993”
t0“Sweet Corn (Zea mays)”
Claim · model-written summary
Reduced PPI and PRE rates generally gave poor broadleaf control, except PRE half rate in 1993.
- Taxon
- Sweet Cornt0
- Treatment
- Preplant incorporated (PPI) and preemergence (PRE) herbicide applications at reduced ratese0
- Interactor
- broadleaf weede0weed
- Outcome
- broadleaf weed controle0
- Direction
- poore0
Not reportedComparator
Verbatim
e0“Preplant incorporated (PPI) and preemergence (PRE) herbicide applications at reduced rates gave poor broadleaf weed control, except for the PRE application at the ½ × rate in 1993”
t0“Sweet Corn (Zea mays)”
Claim · model-written summary
Early POST quarter rate significantly reduced grass control in 1994.
- Taxon
- Sweet Cornt0
- Treatment
- Early POST applications at the ¼ × ratee0
- Interactor
- grasse0weed
- Outcome
- grass controle0
- Direction
- reducede0
Not reportedComparatorSetting
Verbatim
e0“Early POST applications at the ¼ × rate resulted in significantly reduced grass control in 1994”
t0“Sweet Corn (Zea mays)”
Claim · model-written summary
POST quarter rate significantly reduced grass control in both years.
- Taxon
- Sweet Cornt0
- Treatment
- POST applications at the ¼ × ratee0
- Interactor
- grasse0weed
- Outcome
- grass controle0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“POST applications at the ¼ × rate gave significantly reduced grass control both years”
t0“Sweet Corn (Zea mays)”
Claim · model-written summary
POST applications controlled broadleaf weeds better than early POST applications.
Verbatim
e0“POST applications controlled broadleaf weeds better than early POST applications”
t0“Sweet Corn (Zea mays)”
Claim · model-written summary
Early POST applications controlled grasses better than POST at reduced rates.
Verbatim
e0“grass control with early POST applications was superior to POST applications at reduced rates”
t0“Sweet Corn (Zea mays)”
Claim · model-written summary
Reduced PRE and PPI rates provided satisfactory grass control.
- Taxon
- Sweet Cornt0
- Treatment
- Preemergence and PPI applications at reduced ratese0
- Interactor
- grasse0weed
- Outcome
- grass controle0
- Direction
- satisfactorye0
Not reportedComparator
Verbatim
e0“Preemergence and PPI applications at reduced rates gave poor broadleaf weed control but satisfactory grass control”
t0“Sweet Corn (Zea mays)”
Claim · model-written summary
Reduced PPI rates reduced sweet corn yield in both years.
- Taxon
- Sweet Cornt0
- Treatment
- Preplant incorporated applications at reduced ratese0
- Outcome
- yielde0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“Preplant incorporated applications at reduced rates resulted in reduced yield both years”
t0“Sweet Corn (Zea mays)”
Claim · model-written summary
Reduced PRE rates reduced sweet corn yield only in 1994.
Not reportedComparator
Verbatim
e0“PRE applications at reduced rates reduced yield only in 1994”
t0“Sweet Corn (Zea mays)”
Claim · model-written summary
Reduced early POST and POST rates did not affect sweet corn yield.
- Taxon
- Sweet Cornt0
- Treatment
- Early POST and POST applications at reduced ratese0
- Outcome
- sweet corn yielde0
- Direction
- did not affecte0
Not reportedComparator
Verbatim
e0“Early POST and POST applications at reduced rates did not affect sweet corn yield”
t0“Sweet Corn (Zea mays)”
Claim · model-written summary
Adding adjuvants at quarter rate did not affect weed control or yield.
- Taxon
- Sweet Cornt0
- Treatment
- addition of adjuvants to the ¼ × application ratee0
- Outcome
- weed control or yielde0
- Direction
- no effecte0
Not reportedComparator
Verbatim
e0“The addition of adjuvants to the ¼ × application rate had no effect on weed control or yield”
t0“Sweet Corn (Zea mays)”
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