Abstract
Dry bean (Phaseolus vulgaris L.) is an important legume worldwide and nitrogen (N) is most yield limiting nutrients. A field experiment was conducted for two consecutive years to evaluate response of 15 dry bean genotypes to nitrogen and rhizobial inoculation. The N and rhizobia treatments were (i) control (0 kg N ha−1), (ii) seed inoculation with rhizobia strains, (iii) seed inoculation with rhizobia strains + 50 kg N ha−1, and (iv) 120 kg N ha−1. Straw yield, grain yield, and yield components were significantly influenced by N and rhizobial treatments. Grain yield, straw yield, number of pods m−2, and grain harvest index were significantly influenced by year, nitrogen + rhizobium, and genotype treatments. Year × Nitrogen + rhizobium × genotype interactions were also significant for these traits. Hence, these traits varied among genotypes with the variation in year and nitrogen + rhizobium treatments. Inoculation with rhizobium alone did not produce maximum yield and fertilizer N is required in combination with inoculation. Based on grain yield efficiency index, genotypes were classified as efficient, moderately efficient, and inefficient in nitrogen use efficiency (NUE). NUE defined as grain produced per unit N applied decreased with increasing N rate. Overall, NUE was 23.17 kg grain yield kg−1 N applied at 50 kg N ha−1 and 13.33 kg grain per kg N applied at 120 kg N ha−1.
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Claims 9
Claim · model-written summary
Nitrogen and rhizobial treatments significantly influenced straw yield, grain yield, and yield components.
- Taxon
- Dry Beant0
- Treatment
- N and rhizobial treatmentse0
- Outcome
- Straw yield, grain yield, and yield componentse0
Not reportedComparatorDirection
Verbatim
e0“Straw yield, grain yield, and yield components were significantly influenced by N and rhizobial treatments.”
t0“Dry Bean”
Claim · model-written summary
Year, nitrogen plus rhizobium, and genotype significantly influenced grain yield, straw yield, pods per area, and harvest index.
- Taxon
- Dry Beant0
- Treatment
- nitrogen + rhizobiume0
- Outcome
- Grain yield, straw yield, number of pods m−2, and grain harvest indexe0
Not reportedDirection
Verbatim
e0“Grain yield, straw yield, number of pods m−2, and grain harvest index were significantly influenced by year, nitrogen + rhizobium, and genotype treatments.”
t0“Dry Bean”
Claim · model-written summary
Year by nitrogen plus rhizobium by genotype interactions were significant for grain yield, straw yield, pods per area, and harvest index.
- Taxon
- Dry Beant0
- Treatment
- Nitrogen + rhizobiume0
- Outcome
- Grain yield, straw yield, number of pods m−2, and grain harvest indexe1
Not reportedDirection
Verbatim
e0“Year × Nitrogen + rhizobium × genotype interactions were also significant for these traits.”
e1“Grain yield, straw yield, number of pods m−2, and grain harvest index were significantly influenced”
t0“Dry Bean”
Claim · model-written summary
Rhizobium inoculation alone did not produce maximum yield.
- Taxon
- Dry Beant0
- Treatment
- Inoculation with rhizobium alonee0
- Outcome
- maximum yielde0
- Direction
- did not produce maximume0
RhizobiumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with rhizobium alone did not produce maximum yield”
t0“Dry Bean”
Claim · model-written summary
Fertilizer nitrogen was required with inoculation to obtain maximum yield.
Verbatim
e0“fertilizer N is required in combination with inoculation”
e1“maximum yield”
t0“Dry Bean”
Claim · model-written summary
Genotypes were classified as efficient, moderately efficient, and inefficient for nitrogen use efficiency from a grain yield efficiency index.
Verbatim
e0“Based on grain yield efficiency index, genotypes were classified as efficient, moderately efficient, and inefficient in nitrogen use efficiency (NUE).”
t0“Dry Bean”
Claim · model-written summary
Nitrogen use efficiency decreased as nitrogen rate increased.
Verbatim
e0“NUE defined as grain produced per unit N applied decreased with increasing N rate.”
t0“Dry Bean”
Claim · model-written summary
Overall nitrogen use efficiency was 23.17 kg grain yield kg−1 N applied at 50 kg N ha−1.
Verbatim
e0“Overall, NUE was 23.17 kg grain yield kg−1 N applied at 50 kg N ha−1”
t0“Dry Bean”
Claim · model-written summary
Overall nitrogen use efficiency was 13.33 kg grain per kg N applied at 120 kg N ha−1.
Verbatim
e0“13.33 kg grain per kg N applied at 120 kg N ha−1”
e1“Overall, NUE was”
t0“Dry Bean”
The same questions in other papers
inoculation · Rhizobium · Phaseolus vulgaris (common bean)Positive and negative results
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See all 23 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.