Abstract
The study was carried out at the farmer’s field in Tilkahana, Kapilvastu from February 2020 – June 2020. The objectives of the study were determining the better variety nitrogen management practices for spring rice cultivation. The study was conducted in Factorial Randomized Complete Block Design replicated thrice. Factor A includes spring rice varieties viz. Chaite-5 and Hardinath-3. Factor B includes the nitrogen management practices adopted which were: Recommended dose of N at 3 equal splits, 1/3 at basal +1/3 at 20 DAT + 1/3 at 45 DAT; Recommended dose of N at 3 splits, ¼ at basal + ½ at 20 DAT + ¼ at 45 DAT; N application using leaf color chart (LCC); Zero N, Control and Farmer’s Fertilizer Practices (FFP). Rice seedlings were raised in a wet nursery bed and transplanted in experimental plots on 21st March 2020. The crop geometry was 20 x 20 cm. Growth parameters, grain yield, and yield-attributing traits of rice were recorded. The results revealed statistical differences between the treatments in terms of agronomical parameters, yield attributing characters, and grain yield. Results indicate the recommended dose of N application at 3 splits i.e., ¼ at basal+ ½ at 20DAT+ ¼ at 45 DAT contributes to the higher plant height (104.79 cm), the number of tillers (9.88), grain yield (4.9 Mt ha-1) and straw yield (7.44 Mt ha-1). The highest LAI (2.84), flag leaf length (31.063 cm), and effective tillers/m2 (245.41) were obtained in nitrogen application using LCC. Moreover, the recommended dose of N at 3 splits, ¼ at basal + ½ at 20 DAT + ¼ at 45 DAT, and nitrogen application using LCC showed almost similar performance in most of the parameters. Among the varieties, Hardinath 3 produced the highest plant height (100.86 cm), Flag leaf length (29.509 cm), and 1000 grain weight (29.059 gm) as compared to Chaite 5 (94.613 cm), (26.355 cm) and (24.199 g) respectively. Also, there was a positive correlation between the grain yield and effective tillers per m2 (r =0.972), grain yield and filled grains per panicle (r =0.405), and grain yield and LAI (r =0.716). Hence, the recommended dose of nitrogen application at 3 splits i.e., ¼ at basal+ ½ at 20 DAT+ ¼ at 45 DAT, and nitrogen application using LCC were found to improve yield and yield attributes of spring rice.
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Claims 14
Claim · model-written summary
The recommended split nitrogen dose gave higher plant height (104.79 cm).
- Taxon
- Rice
Oryza sativat0 - Treatment
- recommended dose of N application at 3 splits i.e., ¼ at basal+ ½ at 20DAT+ ¼ at 45 DATe0
- Outcome
- plant heighte0
- Direction
- highere0
- Value
- 104.79 cme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results indicate the recommended dose of N application at 3 splits i.e., ¼ at basal+ ½ at 20DAT+ ¼ at 45 DAT contributes to the higher plant height (104.79 cm), the number of tillers (9.88), grain yield (4.9 Mt ha-1) and straw yield (7.44 Mt ha-1).”
t0“Spring Rice”
Claim · model-written summary
The recommended split nitrogen dose gave higher number of tillers (9.88).
- Taxon
- RiceOryza sativat0
- Treatment
- recommended dose of N application at 3 splits i.e., ¼ at basal+ ½ at 20DAT+ ¼ at 45 DATe0
- Outcome
- number of tillerse0
- Direction
- highere0
- Value
- 9.88e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results indicate the recommended dose of N application at 3 splits i.e., ¼ at basal+ ½ at 20DAT+ ¼ at 45 DAT contributes to the higher plant height (104.79 cm), the number of tillers (9.88), grain yield (4.9 Mt ha-1) and straw yield (7.44 Mt ha-1).”
t0“Spring Rice”
Claim · model-written summary
The recommended split nitrogen dose gave higher grain yield (4.9 Mt ha-1).
- Taxon
- RiceOryza sativat0
- Treatment
- recommended dose of N application at 3 splits i.e., ¼ at basal+ ½ at 20DAT+ ¼ at 45 DATe0
- Outcome
- grain yielde0
- Direction
- highere0
- Value
- 4.9 Mt ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results indicate the recommended dose of N application at 3 splits i.e., ¼ at basal+ ½ at 20DAT+ ¼ at 45 DAT contributes to the higher plant height (104.79 cm), the number of tillers (9.88), grain yield (4.9 Mt ha-1) and straw yield (7.44 Mt ha-1).”
t0“Spring Rice”
Claim · model-written summary
The recommended split nitrogen dose gave higher straw yield (7.44 Mt ha-1).
- Taxon
- RiceOryza sativat0
- Treatment
- recommended dose of N application at 3 splits i.e., ¼ at basal+ ½ at 20DAT+ ¼ at 45 DATe0
- Outcome
- straw yielde0
- Direction
- highere0
- Value
- 7.44 Mt ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results indicate the recommended dose of N application at 3 splits i.e., ¼ at basal+ ½ at 20DAT+ ¼ at 45 DAT contributes to the higher plant height (104.79 cm), the number of tillers (9.88), grain yield (4.9 Mt ha-1) and straw yield (7.44 Mt ha-1).”
t0“Spring Rice”
Claim · model-written summary
Leaf color chart nitrogen application gave the highest LAI (2.84).
- Taxon
- RiceOryza sativat0
- Treatment
- nitrogen application using LCCe0
- Outcome
- LAIe0
- Direction
- higheste0
- Value
- 2.84e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest LAI (2.84), flag leaf length (31.063 cm), and effective tillers/m2 (245.41) were obtained in nitrogen application using LCC.”
t0“Spring Rice”
Claim · model-written summary
Leaf color chart nitrogen application gave the highest flag leaf length (31.063 cm).
- Taxon
- RiceOryza sativat0
- Treatment
- nitrogen application using LCCe0
- Outcome
- flag leaf lengthe0
- Direction
- higheste0
- Value
- 31.063 cme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest LAI (2.84), flag leaf length (31.063 cm), and effective tillers/m2 (245.41) were obtained in nitrogen application using LCC.”
t0“Spring Rice”
Claim · model-written summary
Leaf color chart nitrogen application gave the highest effective tillers/m2 (245.41).
- Taxon
- RiceOryza sativat0
- Treatment
- nitrogen application using LCCe0
- Outcome
- effective tillers/m2e0
- Direction
- higheste0
- Value
- 245.41e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest LAI (2.84), flag leaf length (31.063 cm), and effective tillers/m2 (245.41) were obtained in nitrogen application using LCC.”
t0“Spring Rice”
Claim · model-written summary
Split nitrogen and leaf color chart applications performed almost similarly for most parameters.
- Taxon
- RiceOryza sativat0
- Treatment
- nitrogen application using LCCe0
- Outcome
- almost similar performance in most of the parameterse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moreover, the recommended dose of N at 3 splits, ¼ at basal + ½ at 20 DAT + ¼ at 45 DAT, and nitrogen application using LCC showed almost similar performance in most of the parameters.”
t0“Spring Rice”
Claim · model-written summary
Hardinath 3 had higher plant height than Chaite 5 (100.86 cm for Hardinath 3).
Not reportedTaxon
Verbatim
e0“Among the varieties, Hardinath 3 produced the highest plant height (100.86 cm), Flag leaf length (29.509 cm), and 1000 grain weight (29.059 gm) as compared to Chaite 5 (94.613 cm), (26.355 cm) and (24.199 g) respectively.”
Claim · model-written summary
Hardinath 3 had higher Flag leaf length than Chaite 5 (29.509 cm for Hardinath 3).
- Material
- Hardinath 3e0
- Outcome
- Flag leaf lengthe0
- Direction
- higheste0
- Value
- 29.509 cme0
- Comparator
- Chaite 5e0
Not reportedTaxon
Verbatim
e0“Among the varieties, Hardinath 3 produced the highest plant height (100.86 cm), Flag leaf length (29.509 cm), and 1000 grain weight (29.059 gm) as compared to Chaite 5 (94.613 cm), (26.355 cm) and (24.199 g) respectively.”
Claim · model-written summary
Hardinath 3 had higher 1000 grain weight than Chaite 5 (29.059 gm for Hardinath 3).
- Material
- Hardinath 3e0
- Outcome
- 1000 grain weighte0
- Direction
- higheste0
- Value
- 29.059 gme0
- Comparator
- Chaite 5e0
Not reportedTaxon
Verbatim
e0“Among the varieties, Hardinath 3 produced the highest plant height (100.86 cm), Flag leaf length (29.509 cm), and 1000 grain weight (29.059 gm) as compared to Chaite 5 (94.613 cm), (26.355 cm) and (24.199 g) respectively.”
Claim · model-written summary
Grain yield correlated positively with effective tillers per m2 (r =0.972).
- Organ / stage
- effective tillers per m2e0
- Outcome
- grain yielde0
- Direction
- positive correlatione0
- Value
- r =0.972e0
Not reportedTaxon
Verbatim
e0“Also, there was a positive correlation between the grain yield and effective tillers per m2 (r =0.972), grain yield and filled grains per panicle (r =0.405), and grain yield and LAI (r =0.716).”
Claim · model-written summary
Grain yield correlated positively with filled grains per panicle (r =0.405).
- Organ / stage
- filled grains per paniclee0
- Outcome
- grain yielde0
- Direction
- positive correlatione0
- Value
- r =0.405e0
Not reportedTaxon
Verbatim
e0“Also, there was a positive correlation between the grain yield and effective tillers per m2 (r =0.972), grain yield and filled grains per panicle (r =0.405), and grain yield and LAI (r =0.716).”
Claim · model-written summary
Grain yield correlated positively with LAI (r =0.716).
Not reportedTaxon
Verbatim
e0“Also, there was a positive correlation between the grain yield and effective tillers per m2 (r =0.972), grain yield and filled grains per panicle (r =0.405), and grain yield and LAI (r =0.716).”
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