Abstract
Abstract The present study aimed to investigate the effects of various levels of chemical nitrogen fertilizer and inoculation with different strains of Bradyrhizobium japonicum on several phenological, quantitative, qualitative, and fodder-related characteristics of guar ( Cyamopsis tetragonoloba L.) under varying water-deficit regimes. A two-year field experiment (2021–2022) was conducted as a split-factorial arrangement based on a randomized complete block design with three replications to evaluate the interactive effects of nitrogen fertilization (0, 50, and 100 kg ha − 1 ) and seed inoculation with strains RS-150 and RS-153 under different irrigation regimes. Deficit irrigation significantly reduced grain yield, while full irrigation × 100 kg N ha − 1 yielded the highest GY (3658.2 kg ha − 1 ) and severe deficit × no N applicatopn the lowest (1017.8 kg ha − 1 ). Application of 100 kg N ha − 1 increased GY by 30.99% compared with the control. Inoculation with RS-153 enhanced grain number per m² and 1000-grain weight by 14.41% and 14.54%, respectively, relative to non-inoculated plants. Full irrigation also increased grain protein content by up to 22.19% compared with severe deficit. Soluble sugars accumulated under water stress, reaching 490.16 µg g − 1 DW under deficit irrigation × 100 kg N ha − 1 × RS-150, indicating osmotic adjustment. Crude protein, metabolizable energy, and dry matter digestibility were further improved under full irrigation and higher nitrogen supply. Overall, integrated nitrogen management and rhizobial inoculation partially mitigated drought-induced yield reductions and improved the forage quality of guar under semi-arid conditions.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Deficit irrigation significantly reduced grain yield.
- Taxon
- guar
Cyamopsis tetragonolobat0 - Treatment
- Deficit irrigatione0
- Outcome
- grain yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Deficit irrigation significantly reduced grain yield”
t0“guar”
Claim · model-written summary
Full irrigation with 100 kg N ha − 1 produced the highest grain yield, 3658.2 kg ha − 1.
- Taxon
- guarCyamopsis tetragonolobat0
- Treatment
- full irrigation × 100 kg N ha − 1e0
- Outcome
- GYe0
- Direction
- higheste0
- Value
- 3658.2 kg ha − 1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“full irrigation × 100 kg N ha − 1 yielded the highest GY (3658.2 kg ha − 1 )”
t0“guar”
Claim · model-written summary
Severe deficit without nitrogen produced the lowest grain yield, 1017.8 kg ha − 1.
- Taxon
- guarCyamopsis tetragonolobat0
- Treatment
- severe deficit × no N applicatopne0
- Outcome
- loweste0
- Direction
- loweste0
- Value
- 1017.8 kg ha − 1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“severe deficit × no N applicatopn the lowest (1017.8 kg ha − 1 )”
t0“guar”
Claim · model-written summary
100 kg N ha − 1 raised grain yield by 30.99% relative to control.
- Taxon
- guarCyamopsis tetragonolobat0
- Treatment
- 100 kg N ha − 1e0
- Outcome
- GYe0
- Direction
- increasede0
- Value
- 30.99%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 100 kg N ha − 1 increased GY by 30.99% compared with the control”
t0“guar”
Claim · model-written summary
RS-153 inoculation increased grain number per m² by 14.41%.
- Taxon
- guarCyamopsis tetragonolobat0
- Treatment
- Inoculation with RS-153e0
- Interactor
- RS-153e0symbiont
- Outcome
- grain number per m²e0
- Direction
- enhancede0
- Value
- 14.41%e0
- Comparator
- non-inoculated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with RS-153 enhanced grain number per m² and 1000-grain weight by 14.41% and 14.54%, respectively, relative to non-inoculated plants”
t0“guar”
Claim · model-written summary
RS-153 inoculation increased 1000-grain weight by 14.54%.
- Taxon
- guarCyamopsis tetragonolobat0
- Treatment
- Inoculation with RS-153e0
- Interactor
- RS-153e0symbiont
- Outcome
- 1000-grain weighte0
- Direction
- enhancede0
- Value
- 14.54%e0
- Comparator
- non-inoculated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with RS-153 enhanced grain number per m² and 1000-grain weight by 14.41% and 14.54%, respectively, relative to non-inoculated plants”
t0“guar”
Claim · model-written summary
Full irrigation increased grain protein content by up to 22.19% relative to severe deficit.
- Taxon
- guarCyamopsis tetragonolobat0
- Treatment
- Full irrigatione0
- Outcome
- grain protein contente0
- Direction
- increasede0
- Value
- up to 22.19%e0
- Comparator
- severe deficite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Full irrigation also increased grain protein content by up to 22.19% compared with severe deficit”
t0“guar”
Claim · model-written summary
Water stress increased soluble sugars, reaching 490.16 µg g − 1 DW under deficit irrigation, nitrogen and RS-150.
- Taxon
- guarCyamopsis tetragonolobat0
- Treatment
- deficit irrigation × 100 kg N ha − 1 × RS-150e0
- Interactor
- RS-150e0symbiont
- Outcome
- Soluble sugarse0
- Direction
- accumulatede0
- Value
- 490.16 µg g − 1 DWe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soluble sugars accumulated under water stress, reaching 490.16 µg g − 1 DW under deficit irrigation × 100 kg N ha − 1 × RS-150”
t0“guar”
Claim · model-written summary
Full irrigation and higher nitrogen improved crude protein, metabolizable energy and dry matter digestibility.
- Taxon
- guarCyamopsis tetragonolobat0
- Treatment
- full irrigation and higher nitrogen supplye0
- Outcome
- Crude protein, metabolizable energy, and dry matter digestibilitye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Crude protein, metabolizable energy, and dry matter digestibility were further improved under full irrigation and higher nitrogen supply”
t0“guar”
The same questions in other papers
irrigation · yield · Cyamopsis tetragonoloba (cluster bean)Positive and negative results
2 papers in the same direction as this paper · 14 in the opposite direction
- positive
- positive
- positive
13 papers more in this group
See all 17 papers →inoculation · yield · Cyamopsis tetragonoloba (cluster bean)Positive and negative results
28 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
26 papers more in this group
See all 30 papers →irrigation · quality: protein · Cyamopsis tetragonoloba (cluster bean)Results agree
2 papers in the same direction as this paper
- positive
- positive
nitrogen · quality: protein · Cyamopsis tetragonoloba (cluster bean)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →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.