Abstract
Abstract Lodging of rice decreases speed and efficiency of mechanical harvest of rice ( Oryza saliva L. ‘Starbonnet’). A 3‐yr field study was conducted at Stoneville, MS, on a Sharkey clay soil (Vertic Haplaquept) to determine if rice height and lodging could be reduced with a growth regulator. Paclobutrazol [(2RS,3RS)‐1‐(4‐chlorophenyl)‐4,4‐dimethyI‐2‐1,2,4‐triazol‐1‐yl‐)penta‐n‐3‐ol)] was applied at 0.14 and 0.28 kg a.i./ha 2 weeks before or 2 weeks after panicle initiation, and at 0.07, 0.14, and 0.28 kg a.i./ha at panicle initiation. Application of 0.28 kg a.i./ha of paclobutrazol 2 weeks after panicle initiation reduced rice height each year and increased rough rice yield in 2 of 3 yr. Lodging, which occurred in only 1 of 3 yr, was significantly decreased with 0.28 kg a.i./ha of paclobutrazol applied either at panicle initiation or 2 weeks after panicle initiation. Increasing preflood N rates to 168 kg N/ha plus applications of paclobutrazol did not consistently increase yields
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Claims 4
Claim · model-written summary
Paclobutrazol applied at 0.28 kg a.i./ha 2 weeks after panicle initiation reduced rice height each year.
- Taxon
- rice
Oryza sativae0 - Treatment
- Application of 0.28 kg a.i./ha of paclobutrazol 2 weeks after panicle initiatione1
- Outcome
- rice heighte1
- Direction
- reducede1
- Qualifier
- each yeare1
- Setting
- Stoneville, MSe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lodging of rice decreases speed and efficiency of mechanical harvest of rice ( Oryza saliva L. ‘Starbonnet’)”
e1“Application of 0.28 kg a.i./ha of paclobutrazol 2 weeks after panicle initiation reduced rice height each year and increased rough rice yield in 2 of 3 yr”
e2“conducted at Stoneville, MS”
Claim · model-written summary
Paclobutrazol applied at 0.28 kg a.i./ha 2 weeks after panicle initiation increased rough rice yield in 2 of 3 years.
- Taxon
- riceOryza sativae0
- Treatment
- Application of 0.28 kg a.i./ha of paclobutrazol 2 weeks after panicle initiatione1
- Outcome
- rough rice yielde1
- Direction
- increasede1
- Qualifier
- in 2 of 3 yre1
- Setting
- Stoneville, MSe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lodging of rice decreases speed and efficiency of mechanical harvest of rice ( Oryza saliva L. ‘Starbonnet’)”
e1“Application of 0.28 kg a.i./ha of paclobutrazol 2 weeks after panicle initiation reduced rice height each year and increased rough rice yield in 2 of 3 yr”
e2“conducted at Stoneville, MS”
Claim · model-written summary
Lodging was significantly decreased by 0.28 kg a.i./ha of paclobutrazol applied at panicle initiation or 2 weeks after it.
- Taxon
- riceOryza sativae0
- Treatment
- 0.28 kg a.i./ha of paclobutrazol applied either at panicle initiation or 2 weeks after panicle initiatione3
- Outcome
- Lodginge3
- Direction
- decreasede3
- Qualifier
- in only 1 of 3 yre3
- Setting
- Stoneville, MSe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lodging of rice decreases speed and efficiency of mechanical harvest of rice ( Oryza saliva L. ‘Starbonnet’)”
e3“Lodging, which occurred in only 1 of 3 yr, was significantly decreased with 0.28 kg a.i./ha of paclobutrazol applied either at panicle initiation or 2 weeks after panicle initiation”
e2“conducted at Stoneville, MS”
Claim · model-written summary
Increasing preflood N to 168 kg N/ha plus paclobutrazol did not consistently increase rice yields.
- Taxon
- riceOryza sativae0
- Treatment
- Increasing preflood N rates to 168 kg N/ha plus applications of paclobutrazole5
- Outcome
- yieldse5
- Direction
- did not consistently increasee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lodging of rice decreases speed and efficiency of mechanical harvest of rice ( Oryza saliva L. ‘Starbonnet’)”
e5“Increasing preflood N rates to 168 kg N/ha plus applications of paclobutrazol did not consistently increase yields”
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