Abstract
Trinexapac-ethyl spraying time and proper nitrogen rate are essential to reduce plant height and lodging at harvest, without affecting rice yield and nutritional balance. This study aimed to evaluate trinexapac-ethyl spraying time and N contents as topdressing for upland rice paddies. The experiment was carried out in a randomized block design and a 4x5 factorial scheme, with four replications. Treatments consisted of four trinexapac-ethyl spraying times, in the phenological stages of tillering, floral differentiation, between tillering and floral differentiation, and a control (without spraying), and five nitrogen rates (0, 50, 100, 150, and 200, kg ha-1) as topdressing. As nitrogen topdressing rates increased, leaf contents of N, Fe++, and Zn++ increased, while S and Mn++ decreased; however, contents of P, Ca++, Mg++, B, and Cu++ were little influenced. When trinexapac-ethyl was applied, leaf contents of N, P, S, B, and Zn++ were little influenced, while P, Ca++, Mg++, Fe++, and Mn++ increased, and Cu++ decreased. Trinexapac-ethyl can be applied at tillering without decreasing rice yield. Upland rice increased grain yield by 58 and 46% in two consecutive crop years due to application of about 120 kg N ha-1 as topdressing.
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Claims 15
Claim · model-written summary
Increasing nitrogen topdressing increased leaf N content.
- Taxon
- upland rice
Oryza sativat0 - Organ / stage
- leafe0
- Treatment
- nitrogen topdressing ratese0
- Outcome
- Ne0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As nitrogen topdressing rates increased, leaf contents of N, Fe++, and Zn++ increased, while S and Mn++ decreased; however, contents of P, Ca++, Mg++, B, and Cu++ were little influenced.”
t0“upland rice”
Claim · model-written summary
Increasing nitrogen topdressing increased leaf Fe++ content.
- Taxon
- upland riceOryza sativat0
- Organ / stage
- leafe0
- Treatment
- nitrogen topdressing ratese0
- Outcome
- Fe++e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As nitrogen topdressing rates increased, leaf contents of N, Fe++, and Zn++ increased, while S and Mn++ decreased; however, contents of P, Ca++, Mg++, B, and Cu++ were little influenced.”
t0“upland rice”
Claim · model-written summary
Increasing nitrogen topdressing increased leaf Zn++ content.
- Taxon
- upland riceOryza sativat0
- Organ / stage
- leafe0
- Treatment
- nitrogen topdressing ratese0
- Outcome
- Zn++e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As nitrogen topdressing rates increased, leaf contents of N, Fe++, and Zn++ increased, while S and Mn++ decreased; however, contents of P, Ca++, Mg++, B, and Cu++ were little influenced.”
t0“upland rice”
Claim · model-written summary
Increasing nitrogen topdressing decreased leaf S content.
- Taxon
- upland riceOryza sativat0
- Organ / stage
- leafe0
- Treatment
- nitrogen topdressing ratese0
- Outcome
- Se0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As nitrogen topdressing rates increased, leaf contents of N, Fe++, and Zn++ increased, while S and Mn++ decreased; however, contents of P, Ca++, Mg++, B, and Cu++ were little influenced.”
t0“upland rice”
Claim · model-written summary
Increasing nitrogen topdressing decreased leaf Mn++ content.
- Taxon
- upland riceOryza sativat0
- Organ / stage
- leafe0
- Treatment
- nitrogen topdressing ratese0
- Outcome
- Mn++e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As nitrogen topdressing rates increased, leaf contents of N, Fe++, and Zn++ increased, while S and Mn++ decreased; however, contents of P, Ca++, Mg++, B, and Cu++ were little influenced.”
t0“upland rice”
Claim · model-written summary
Nitrogen topdressing had little influence on leaf P, Ca++, and Mg++ contents.
- Taxon
- upland riceOryza sativat0
- Treatment
- nitrogen topdressing ratese0
- Outcome
- contents of P, Ca++, Mg++e0
- Direction
- little influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As nitrogen topdressing rates increased, leaf contents of N, Fe++, and Zn++ increased, while S and Mn++ decreased; however, contents of P, Ca++, Mg++, B, and Cu++ were little influenced.”
t0“upland rice”
Claim · model-written summary
Nitrogen topdressing had little influence on leaf B and Cu++ contents.
- Taxon
- upland riceOryza sativat0
- Treatment
- nitrogen topdressing ratese0
- Outcome
- B, and Cu++e0
- Direction
- little influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As nitrogen topdressing rates increased, leaf contents of N, Fe++, and Zn++ increased, while S and Mn++ decreased; however, contents of P, Ca++, Mg++, B, and Cu++ were little influenced.”
t0“upland rice”
Claim · model-written summary
Trinexapac-ethyl had little influence on leaf N, P and S contents.
- Taxon
- upland riceOryza sativat0
- Treatment
- trinexapac-ethyle0
- Outcome
- N, P, Se0
- Direction
- little influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When trinexapac-ethyl was applied, leaf contents of N, P, S, B, and Zn++ were little influenced, while P, Ca++, Mg++, Fe++, and Mn++ increased, and Cu++ decreased.”
t0“upland rice”
Claim · model-written summary
Trinexapac-ethyl had little influence on leaf B and Zn++ contents.
- Taxon
- upland riceOryza sativat0
- Treatment
- trinexapac-ethyle0
- Outcome
- B, and Zn++e0
- Direction
- little influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When trinexapac-ethyl was applied, leaf contents of N, P, S, B, and Zn++ were little influenced, while P, Ca++, Mg++, Fe++, and Mn++ increased, and Cu++ decreased.”
t0“upland rice”
Claim · model-written summary
Trinexapac-ethyl increased leaf P, Ca++ and Mg++ contents.
- Taxon
- upland riceOryza sativat0
- Treatment
- trinexapac-ethyle0
- Outcome
- P, Ca++, Mg++e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When trinexapac-ethyl was applied, leaf contents of N, P, S, B, and Zn++ were little influenced, while P, Ca++, Mg++, Fe++, and Mn++ increased, and Cu++ decreased.”
t0“upland rice”
Claim · model-written summary
Trinexapac-ethyl increased leaf Fe++ and Mn++ contents.
- Taxon
- upland riceOryza sativat0
- Treatment
- trinexapac-ethyle0
- Outcome
- Fe++, and Mn++e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When trinexapac-ethyl was applied, leaf contents of N, P, S, B, and Zn++ were little influenced, while P, Ca++, Mg++, Fe++, and Mn++ increased, and Cu++ decreased.”
t0“upland rice”
Claim · model-written summary
Trinexapac-ethyl decreased leaf Cu++ content.
- Taxon
- upland riceOryza sativat0
- Treatment
- trinexapac-ethyle0
- Outcome
- Cu++e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When trinexapac-ethyl was applied, leaf contents of N, P, S, B, and Zn++ were little influenced, while P, Ca++, Mg++, Fe++, and Mn++ increased, and Cu++ decreased.”
t0“upland rice”
Claim · model-written summary
Trinexapac-ethyl applied at tillering did not decrease rice yield.
- Taxon
- riceOryza sativae0
- Treatment
- Trinexapac-ethyle0
- Outcome
- rice yielde0
- Direction
- without decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trinexapac-ethyl can be applied at tillering without decreasing rice yield.”
Claim · model-written summary
About 120 kg N ha-1 topdressing increased upland rice grain yield by 58% in one crop year.
- Taxon
- Upland riceOryza sativae0
- Treatment
- about 120 kg N ha-1 as topdressinge0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 58e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Upland rice increased grain yield by 58 and 46% in two consecutive crop years due to application of about 120 kg N ha-1 as topdressing.”
Claim · model-written summary
About 120 kg N ha-1 topdressing increased upland rice grain yield by 46% in the next crop year.
- Taxon
- Upland riceOryza sativae0
- Treatment
- about 120 kg N ha-1 as topdressinge0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 46%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Upland rice increased grain yield by 58 and 46% in two consecutive crop years due to application of about 120 kg N ha-1 as topdressing.”
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