Abstract
Zinc is a crucial micronutrient and has great impact on growth, development, and yield of rice (Oryza sativa L.). Among various methods, application of zinc oxide (ZnO) nanoparticles (NPs) via roots or leaves can fulfill the Zn needs of plant. In the present research work, ZnO NPs were prepared through a cost-effective co-precipitation method and were compared with bulk ZnO for its effect on rice. Hexagonal wurtzite structure of synthesized ZnO NPs was confirmed with the help of X-ray diffraction analysis. Average crystallite size was found to be 20 nm. A pot experiment was conducted to evaluate the effect of ZnO NPs on growth, yield and nutritional quality of rice. The experiment comprised of ZnO NPs and bulk ZnO in three treatments as foliar spray, soil application, and root dipping along with control group having no zinc. Results revealed that foliar spray of ZnO NPs increased fresh biomass, grain yield, Zn content in grain and straw as compared to control. Soil application of ZnO NPs also increased husk and root zinc by 21% and 29%, respectively, compared to control. It was observed that soil applied ZnO NPs were mostly accumulated in roots or translocated to husk. Grain yield and grain Zn content was significantly increased by 11% and 28%, respectively, in case of foliar application of nano ZnO as compared to control group. It was concluded that foliar application of ZnO NPs can be used as commercial plant growth promotor and for biofortification purposes, specifically in rice.
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Claims 8
Claim · model-written summary
Foliar ZnO nanoparticle spray increased rice fresh biomass relative to control.
- Taxon
- rice
Oryza sativat0 - Treatment
- foliar spray of ZnO NPse0
- Outcome
- fresh biomasse0
- Direction
- increasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar spray of ZnO NPs increased fresh biomass, grain yield, Zn content in grain and straw as compared to control”
t0“rice (Oryza sativa L.) grain”
Claim · model-written summary
Foliar ZnO nanoparticle spray increased grain yield by 11% compared with control.
- Taxon
- riceOryza sativat0
- Treatment
- foliar application of nano ZnOe0
- Outcome
- Grain yielde0
- Direction
- increasede0
- Value
- 11%e0
- Comparator
- control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield and grain Zn content was significantly increased by 11% and 28%, respectively, in case of foliar application of nano ZnO as compared to control group”
t0“rice (Oryza sativa L.) grain”
Claim · model-written summary
Foliar ZnO nanoparticle spray increased grain zinc content by 28% compared with control.
- Taxon
- riceOryza sativat0
- Treatment
- foliar application of nano ZnOe0
- Outcome
- grain Zn contente0
- Direction
- increasede0
- Value
- 28%e0
- Comparator
- control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield and grain Zn content was significantly increased by 11% and 28%, respectively, in case of foliar application of nano ZnO as compared to control group”
t0“rice (Oryza sativa L.) grain”
Claim · model-written summary
Foliar ZnO nanoparticle spray increased straw zinc content compared with control.
- Taxon
- riceOryza sativat0
- Treatment
- foliar spray of ZnO NPse0
- Outcome
- Zn content in grain and strawe0
- Direction
- increasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar spray of ZnO NPs increased fresh biomass, grain yield, Zn content in grain and straw as compared to control”
t0“rice (Oryza sativa L.) grain”
Claim · model-written summary
Soil application of ZnO nanoparticles increased husk zinc by 21% over control.
- Taxon
- riceOryza sativat0
- Treatment
- Soil application of ZnO NPse0
- Outcome
- huske0
- Direction
- increasede0
- Value
- 21%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil application of ZnO NPs also increased husk and root zinc by 21% and 29%, respectively, compared to control”
t0“rice (Oryza sativa L.) grain”
Claim · model-written summary
Soil application of ZnO nanoparticles increased root zinc by 29% over control.
- Taxon
- riceOryza sativat0
- Treatment
- Soil application of ZnO NPse0
- Outcome
- root zince0
- Direction
- increasede0
- Value
- 29%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil application of ZnO NPs also increased husk and root zinc by 21% and 29%, respectively, compared to control”
t0“rice (Oryza sativa L.) grain”
Claim · model-written summary
Soil applied ZnO nanoparticles mostly accumulated in roots or moved to husk.
- Taxon
- riceOryza sativat0
- Treatment
- soil applied ZnO NPse0
- Outcome
- mostly accumulated in roots or translocated to huske0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil applied ZnO NPs were mostly accumulated in roots or translocated to husk”
t0“rice (Oryza sativa L.) grain”
Claim · model-written summary
The authors recommend foliar ZnO nanoparticles as a rice growth promoter and for biofortification.
- Taxon
- riceOryza sativae0
- Treatment
- foliar application of ZnO NPse0
- Outcome
- commercial plant growth promotor and for biofortification purposese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar application of ZnO NPs can be used as commercial plant growth promotor and for biofortification purposes, specifically in rice”
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See all 313 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.