Abstract
A field experiment was conducted during summer season for two consecutive years (2022-2023) at Navsari, Gujarat to study the effect of liquid Nano urea fertilizer on summer rice (Oryza sativa L.) under South Gujarat conditions. The experiment was laid out in randomized block design with three replications and twelve treatments comprising T1: 100 % RDN (Recommended dose of nitrogen) through urea (120 kg N ha-1), T2: 75 % RDN + Seedling root dip in Nano urea at transplanting (TP) (4 ml L-1), T3: 50 % RDN + Seedling root dip in Nano urea at TP (4 ml L-1), T4: 25 % RDN + Seedling root dip in Nano urea at TP (4 ml L-1), T5: 75 % RDN + Spray of Nano urea at tillering stage (4 ml L-1), T6: 50 % RDN + Spray of Nano urea at tillering stag (4 ml L-1), T7: 25 % RDN + Spray of Nano urea at tillering stage (4 ml L-1), T8: 75 % RDN + Spray of Nano urea at tillering and panicle initiation stage (4 ml L-1), T9: 50 % RDN + Spray of Nano urea at tillering and panicle initiation stage (4 ml L-1), T10: 25 % RDN + Spray of Nano urea at tillering and panicle initiation stage (4 ml L-1), T11: Spray of Nano urea at tillering and panicle initiation stage (4 ml L-1) and T12: Seedling root dip in Nano urea at TP + Spray of Nano urea at tillering and panicle initiation stage (4 ml L-1). Application of 75 % RDN + Spray of Nano urea at tillering and panicle initiation stage (4 ml L-1) obtain significantly higher growth attributes viz., periodical plant height, number of tillers plant-1, dry matter accumulation plant-1, chlorophyll content and growth indices including leaf area index (LAI) at 60 and 90 DAS, crop growth rate (CGR), relative growth rate (RGR) and net assimilation rate (NAR) during 30-60 DAS, 60-90 DAS, and 90 DAS-Harvest. Similarly, significantly higher grain yield was produced under treatment T8 (4435 kg ha-1) which was 3.24% higher than 100% RDN through conventional urea.
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Claims 4
Claim · model-written summary
T8 significantly increased rice plant height, tiller count and dry matter accumulation.
- Taxon
- Rice
Oryza sativat0 - Treatment
- 75 % RDN + Spray of Nano urea at tillering and panicle initiation stage (4 ml L-1)e0
- Outcome
- periodical plant height, number of tillers plant-1, dry matter accumulation plant-1e0
- Direction
- significantly highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 75 % RDN + Spray of Nano urea at tillering and panicle initiation stage (4 ml L-1) obtain significantly higher growth attributes viz., periodical plant height, number of tillers plant-1, dry matter accumulation plant-1”
t0“Rice”
Claim · model-written summary
T8 significantly raised chlorophyll content and leaf area index at 60 and 90 DAS.
- Taxon
- RiceOryza sativat0
- Treatment
- 75 % RDN + Spray of Nano urea at tillering and panicle initiation stage (4 ml L-1)e1
- Outcome
- chlorophyll content and growth indices including leaf area index (LAI)e0
- Direction
- significantly highere1
- Qualifier
- 60 and 90 DASe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chlorophyll content and growth indices including leaf area index (LAI) at 60 and 90 DAS”
e1“Application of 75 % RDN + Spray of Nano urea at tillering and panicle initiation stage (4 ml L-1) obtain significantly higher”
t0“Rice”
Claim · model-written summary
T8 significantly raised crop growth, relative growth and net assimilation rates during the stated intervals.
- Taxon
- RiceOryza sativat0
- Treatment
- 75 % RDN + Spray of Nano urea at tillering and panicle initiation stage (4 ml L-1)e1
- Outcome
- crop growth rate (CGR), relative growth rate (RGR) and net assimilation rate (NAR)e0
- Direction
- significantly highere1
- Qualifier
- 30-60 DAS, 60-90 DAS, and 90 DAS-Harveste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crop growth rate (CGR), relative growth rate (RGR) and net assimilation rate (NAR) during 30-60 DAS, 60-90 DAS, and 90 DAS-Harvest”
e1“Application of 75 % RDN + Spray of Nano urea at tillering and panicle initiation stage (4 ml L-1) obtain significantly higher”
t0“Rice”
Claim · model-written summary
T8 produced 4435 kg ha-1 grain, 3.24% above conventional 100% RDN urea.
- Taxon
- Summer RiceOryza sativat0
- Treatment
- treatment T8e0
- Outcome
- grain yielde0
- Direction
- highere0
- Value
- 4435 kg ha-1e0
- Comparator
- 100% RDN through conventional ureae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly higher grain yield was produced under treatment T8 (4435 kg ha-1) which was 3.24% higher than 100% RDN through conventional urea”
t0“Summer Rice”
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