Abstract
Si application alleviates influence of some abiotic stresses on crop plants. Meanwhile, scarce information is avaiable about the significance of Si for helping the plants to overcome the injuries of N deficiency and herbicides pressure. Thus, two–year 2–field experiments were carried out in wheat. Experiment I involved three Si concentrations (Si0ppm, Si250ppm and Si500ppm) and two N levels(N100% and N50%). Experiment II examined four combinations of fenoxaprop–p–ethyl and Si: fenoxaprop–p–ethyl+Si250ppm and fenoxaprop–p–ethyl+Si500ppm (each either in sequence or in tank mixture), fenoxaprop–p–ethyl alone, hand weeding and weedy check. Under N deficiency (N50%), Si500ppm increased plant height as compared to the control. No significant differences in SPAD values were detected amongst Si concentrations under each of the two tested N levels. Si can partially alleviate negative N deficiency effect on wheat yield, causing its increase to level obtained under normal N supply. Si has no effect on weed biomass when applied with fenoxaprop–p–ethyl either in sequence or in tank mixing. The most promising treatment for maximizing wheat grain yield was the application of 100 kg N ha–1 (N50%) x fenoxaprop–p–ethyl+Si250ppm in sequence", which also, in the same time, means reducing both cost of crop production and environment pollution.
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Claims 6
Claim · model-written summary
Under nitrogen deficiency, Si500ppm increased wheat height versus control.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- Si500ppme0
- Outcome
- plant heighte0
- Direction
- increasede0
- Qualifier
- N deficiency (N50%)e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under N deficiency (N50%), Si500ppm increased plant height as compared to the control.”
e1“in wheat”
Claim · model-written summary
SPAD values did not differ significantly among silicon concentrations at either nitrogen level.
- Taxon
- wheatTriticum aestivume1
- Treatment
- Si concentrationse0
- Outcome
- SPAD valuese0
- Direction
- No significant differencese0
- Comparator
- Si concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant differences in SPAD values were detected amongst Si concentrations under each of the two tested N levels.”
e1“in wheat”
Claim · model-written summary
Silicon partially alleviated nitrogen-deficiency effects on wheat yield, raising it to the normal nitrogen level.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Sie0
- Outcome
- wheat yielde0
- Direction
- increasee0
- Comparator
- normal N supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si can partially alleviate negative N deficiency effect on wheat yield, causing its increase to level obtained under normal N supply.”
Claim · model-written summary
Silicon with fenoxaprop–p–ethyl had no effect on weed biomass whether sequentially applied or tank mixed.
- Taxon
- wheatTriticum aestivume1
- Treatment
- Sie0
- Interactor
- weede0weed
- Outcome
- weed biomasse0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si has no effect on weed biomass when applied with fenoxaprop–p–ethyl either in sequence or in tank mixing.”
e1“in wheat”
Claim · model-written summary
The authors identified 100 kg N ha–1 plus sequential fenoxaprop–p–ethyl and Si250ppm as the most promising yield treatment.
- Taxon
- wheatTriticum aestivume0
- Treatment
- 100 kg N ha–1 (N50%) x fenoxaprop–p–ethyl+Si250ppm in sequencee0
- Outcome
- maximizing wheat grain yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most promising treatment for maximizing wheat grain yield was the application of 100 kg N ha–1 (N50%) x fenoxaprop–p–ethyl+Si250ppm in sequence”
Claim · model-written summary
The recommended treatment was interpreted to reduce production cost and environmental pollution.
- Taxon
- wheatTriticum aestivume1
- Outcome
- cost of crop production and environment pollutione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reducing both cost of crop production and environment pollution.”
e1“in wheat”
The same questions in other papers
silicon atom · yield · Triticum aestivum (wheat)Results differ
84 papers in the same direction as this paper · 5 in the opposite direction
- positive
- no effect
- no effect
86 papers more in this group
See all 90 papers →silicon atom · physiology: pigments · Triticum aestivum (wheat)Positive and negative results
24 reporting no difference from an alternative
- positive
- positive
- positive
21 papers more in this group
See all 25 papers →silicon atom · weed · Triticum aestivum (wheat)Results agree
1 paper in the same direction as this paper
- no effect
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.