Abstract
Use of Gibberellic acid (GA3) application in rice cultivation for increasing the grain yield is well documented. However, improper and untimely use of GA3 could result in poor response to GA3 application. This study was aimed at to investigate the timing of application during different growth stages and mode of application of GA3 on the growth and yield of MR219, a popular Indica rice variety, released by Malaysian Agricultural Research and Development Institute (MARDI). Two commercial GA3 formulations, namely ProGibb SG containing 40% GA3 and ProGibb silica Granule containing 0.1% GA3 were used for foliar and soil application, respectively. GA3 was applied at late tillering stage and at 10-30% panicle heading stage. Interestingly, GA3 application as foliar spray during the early reproductive stage, ie at 10-30% panicle heading stage enhanced the grain yield significantly, recording over 27% grain yield increase over the untreated control. Moreover, two applications of GA3 at 7 days’ interval has consistently given higher grain yield than single application. However, there is no significant difference in flag leaf characteristics, one thousand grain weight and milling qualities among different treatments. Our study has clearly illustrated that foliar application of GA3 at weekly interval at 10-30% panicle heading stage, can increase rice grain yield significantly.
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Claims 5
Claim · model-written summary
Foliar GA3 at 10-30% panicle heading increased MR219 grain yield by over 27% over untreated control.
- Taxon
- rice
Oryza sativat0 - Material
- MR219t1
- Treatment
- GA3 application as foliar spray during the early reproductive stage, ie at 10-30% panicle heading stagee0
- Outcome
- grain yielde0
- Direction
- enhancede0
- Value
- over 27%e0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA3 application as foliar spray during the early reproductive stage, ie at 10-30% panicle heading stage enhanced the grain yield significantly, recording over 27% grain yield increase over the untreated control”
t0“Rice”
t1“MR219”
Claim · model-written summary
Two GA3 applications seven days apart gave higher grain yield than one application.
- Taxon
- riceOryza sativat0
- Treatment
- two applications of GA3 at 7 days’ intervale0
- Outcome
- grain yielde0
- Direction
- highere0
- Comparator
- single applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two applications of GA3 at 7 days’ interval has consistently given higher grain yield than single application”
t0“Rice”
Claim · model-written summary
Flag leaf characteristics did not differ significantly among GA3 treatments.
- Taxon
- riceOryza sativat0
- Treatment
- different treatmentse0
- Outcome
- flag leaf characteristicse0
- Direction
- no significant differencee0
- Comparator
- different treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there is no significant difference in flag leaf characteristics, one thousand grain weight and milling qualities among different treatments”
t0“Rice”
Claim · model-written summary
Thousand grain weight did not differ significantly among GA3 treatments.
- Taxon
- riceOryza sativat0
- Treatment
- different treatmentse0
- Outcome
- one thousand grain weighte0
- Direction
- no significant differencee0
- Comparator
- different treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there is no significant difference in flag leaf characteristics, one thousand grain weight and milling qualities among different treatments”
t0“Rice”
Claim · model-written summary
Milling quality did not differ significantly among GA3 treatments.
- Taxon
- riceOryza sativat0
- Treatment
- different treatmentse0
- Outcome
- milling qualitiese0
- Direction
- no significant differencee0
- Comparator
- different treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there is no significant difference in flag leaf characteristics, one thousand grain weight and milling qualities among different treatments”
t0“Rice”
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