Abstract
Molybdenum (Mo) is a key element in the N fixing and assimilation processes in leguminous plants. This study aimed to evaluate the effects of Mo fertilization on the yield and seed vigor of the common bean. Molybdenum was applied at six rates (0, 20, 40, 80, 120 and 160 g ha−1) in field trials over 2 consecutive years (2015 and 2016). Foliar applications were performed during the phenological stages V4 (4th trifoliolate leaf unfolded) and R1 (early flowering). The SPAD index, height of first pod insertion, number of pods per plant, number of seeds per pod, weight of 100 seeds, yield and seed vigor were determined. Molybdenum affected the production of reproductive organs only in the second agricultural year. Application of Mo at T-V4 resulted in an increase in the number of pods per plant (11%), and at 120 g ha−1, there was an increase (41%) in the number of seeds per pod, but this did not result in a yield seed increase. Molybdenum applied at the T-V4 phase reduced electrical conductivity in the first year of the experiment at rates of 40 g ha−1 (17%) and 160 g ha−1 (13%). In the second agricultural year, Mo applied at the T-R1 phase reduced in 44% the electrical conductivity, as well as the application of 20 g ha−1 also at the T-R1 phase increased seed germination (28%), seedling length (8%), and length of the primary root (10%). Different responses to the Mo application time and dose between the experimental years suggest that common bean plants recycle Mo. Molybdenum applied in the first agricultural year may have satisfied the initial Mo demand of the common beans in the second year of crop due it's low Mo requirement. This study show that foliar Mo application is an important strategy to achieve sustainable production of higher quality seeds of common bean.
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Claims 13
Claim · model-written summary
Molybdenum affected reproductive-organ production only in the second agricultural year.
- Taxon
- common bean
Phaseolus vulgarist0 - Treatment
- Molybdenume0
- Outcome
- production of reproductive organse0
- Qualifier
- only in the second agricultural yeare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Molybdenum affected the production of reproductive organs only in the second agricultural year.”
t0“common bean”
Claim · model-written summary
Mo at T-V4 increased pods per plant by 11%.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- Mo at T-V4e0
- Outcome
- number of pods per plante0
- Direction
- increasee0
- Value
- 11%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of Mo at T-V4 resulted in an increase in the number of pods per plant (11%)”
t0“common bean”
Claim · model-written summary
Mo at 120 g ha−1 increased seeds per pod by 41%.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- 120 g ha−1e0
- Outcome
- number of seeds per pode0
- Direction
- increasee0
- Value
- 41%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 120 g ha−1, there was an increase (41%) in the number of seeds per pod”
t0“common bean”
Claim · model-written summary
The Mo application did not increase seed yield.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- Mot0
- Outcome
- yield seede0
- Direction
- did not result in a yield seed increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but this did not result in a yield seed increase”
t0“molybdenum fertilization in common bean”
Claim · model-written summary
Mo at T-V4 and 40 g ha−1 reduced first-year electrical conductivity by 17%.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- 40 g ha−1e0
- Outcome
- electrical conductivitye0
- Direction
- reducede0
- Value
- 17%e0
- Qualifier
- first year of the experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Molybdenum applied at the T-V4 phase reduced electrical conductivity in the first year of the experiment at rates of 40 g ha−1 (17%)”
t0“common bean”
Claim · model-written summary
Mo at T-V4 and 160 g ha−1 reduced first-year electrical conductivity by 13%.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- 160 g ha−1e0
- Outcome
- electrical conductivitye0
- Direction
- reducede0
- Value
- 13%e0
- Qualifier
- first year of the experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Molybdenum applied at the T-V4 phase reduced electrical conductivity in the first year of the experiment at rates of 40 g ha−1 (17%) and 160 g ha−1 (13%)”
t0“common bean”
Claim · model-written summary
Mo at T-R1 reduced second-year electrical conductivity by 44%.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- Mo applied at the T-R1 phasee0
- Outcome
- electrical conductivitye0
- Direction
- reducede0
- Value
- 44%e0
- Qualifier
- second agricultural yeare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the second agricultural year, Mo applied at the T-R1 phase reduced in 44% the electrical conductivity”
t0“common bean”
Claim · model-written summary
Mo at 20 g ha−1 during T-R1 increased seed germination by 28%.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- 20 g ha−1 also at the T-R1 phasee0
- Outcome
- seed germinatione0
- Direction
- increasede0
- Value
- 28%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of 20 g ha−1 also at the T-R1 phase increased seed germination (28%)”
t0“common bean”
Claim · model-written summary
Mo at 20 g ha−1 during T-R1 increased seedling length by 8%.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- 20 g ha−1 also at the T-R1 phasee0
- Outcome
- seedling lengthe0
- Direction
- increasede0
- Value
- 8%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of 20 g ha−1 also at the T-R1 phase increased seed germination (28%), seedling length (8%)”
t0“common bean”
Claim · model-written summary
Mo at 20 g ha−1 during T-R1 increased primary-root length by 10%.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- 20 g ha−1 also at the T-R1 phasee0
- Outcome
- length of the primary roote0
- Direction
- increasede0
- Value
- 10%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of 20 g ha−1 also at the T-R1 phase increased seed germination (28%), seedling length (8%), and length of the primary root (10%)”
t0“common bean”
Claim · model-written summary
The differing annual responses suggest Mo recycling by common bean plants.
- Taxon
- common bean plantsPhaseolus vulgarise0
- Outcome
- recycle Moe0
- Qualifier
- Different responses to the Mo application time and dose between the experimental yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Different responses to the Mo application time and dose between the experimental years suggest that common bean plants recycle Mo.”
Claim · model-written summary
The authors infer first-year Mo may have met initial second-year demand.
- Taxon
- common beansPhaseolus vulgarise0
- Treatment
- Molybdenum applied in the first agricultural yeare0
- Outcome
- initial Mo demande0
- Qualifier
- due it's low Mo requiremente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Molybdenum applied in the first agricultural year may have satisfied the initial Mo demand of the common beans in the second year of crop due it's low Mo requirement.”
Claim · model-written summary
The authors recommend foliar Mo for sustainable production of higher-quality common-bean seed.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- foliar Mo applicatione0
- Outcome
- sustainable production of higher quality seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar Mo application is an important strategy to achieve sustainable production of higher quality seeds of common bean”
The same questions in other papers
molybdenum atom · yield · Phaseolus vulgaris (common bean)Results differ
20 papers in the same direction as this paper · 7 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- positive
- negative
26 papers more in this group
See all 30 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.