Abstract
This study aimed to verify the effects of leaf application of zinc (Zn) on the growth, physiology, yield, and biofortification of snap beans. The experiment was carried out in a greenhouse, in a completely randomized design, with five doses of zinc (0, 100, 200, 300, and 400 mg L−1). The leaf application of zinc was carried out at the vegetative stage V3 (third leaves). Biometric, physiological, and yield evaluations occurred at stages R5 (flowering) and R8 (harvest). The chlorophyll of plants with zinc is 36% higher with the application of 400 mg L−1 in R8. Foliar fertilization reduced the transpiration around 41%; and it increased the temperature and photosynthetic rate at 5.2% and 16.2%, respectively. The zinc concentration increases up resulted in an increase of 85 and 942% of zinc accumulation in the snap bean plant at the R5 stage. The 100 mg L−1 dose increased crop yield by 8.4% compared to the control treatment. Higher doses can reduce productivity by up to 17% when 400 mg L−1 of Zn is applied. Foliar application of zinc is efficient in promoting an increase in the concentration and accumulation of Zn in the leaves in the stage R5, but at the harvest stage there is no influence of fertilization on the levels and accumulations of zinc in the plant.
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Claims 8
Claim · model-written summary
Foliar application of 400 mg L−1 zinc raised chlorophyll by 36% at R8.
- Taxon
- snap beanst0
- Organ / stage
- R8e0
- Treatment
- application of 400 mg L−1e0
- Outcome
- chlorophylle0
- Direction
- highere0
- Value
- 36%e0
Not reportedComparator
Verbatim
t0“snap beans”
e0“The chlorophyll of plants with zinc is 36% higher with the application of 400 mg L−1 in R8”
Claim · model-written summary
Foliar fertilization reduced transpiration by about 41%.
Not reportedComparator
Verbatim
t0“snap beans”
e1“Foliar fertilization reduced the transpiration around 41%; and it increased the temperature and photosynthetic rate at 5.2% and 16.2%, respectively”
Claim · model-written summary
Foliar fertilization increased leaf temperature by 5.2%.
Not reportedComparator
Verbatim
t0“snap beans”
e1“Foliar fertilization reduced the transpiration around 41%; and it increased the temperature and photosynthetic rate at 5.2% and 16.2%, respectively”
Claim · model-written summary
Foliar fertilization increased photosynthetic rate by 16.2%.
- Taxon
- snap beanst0
- Treatment
- Foliar fertilizatione1
- Outcome
- photosynthetic ratee1
- Direction
- increasede1
- Value
- 16.2%e1
Not reportedComparator
Verbatim
t0“snap beans”
e1“Foliar fertilization reduced the transpiration around 41%; and it increased the temperature and photosynthetic rate at 5.2% and 16.2%, respectively”
Claim · model-written summary
Zinc concentration increases raised zinc accumulation in the snap bean plant by 85 and 942% at the R5 stage.
- Taxon
- snap beanst0
- Organ / stage
- R5 stagee2
- Treatment
- zinc concentratione2
- Outcome
- zinc accumulatione2
- Direction
- increasee2
- Value
- 85 and 942%e2
Not reportedComparator
Verbatim
t0“snap beans”
e2“The zinc concentration increases up resulted in an increase of 85 and 942% of zinc accumulation in the snap bean plant at the R5 stage”
Claim · model-written summary
The 100 mg L−1 zinc dose increased crop yield by 8.4% compared with the control.
Verbatim
t0“snap beans”
e3“The 100 mg L−1 dose increased crop yield by 8.4% compared to the control treatment”
Claim · model-written summary
Zinc at 400 mg L−1 reduced productivity by up to 17%.
Not reportedComparator
Verbatim
t0“snap beans”
e4“Higher doses can reduce productivity by up to 17% when 400 mg L−1 of Zn is applied”
Claim · model-written summary
At harvest, fertilization had no influence on the levels and accumulations of zinc in the plant.
- Taxon
- snap beanst0
- Organ / stage
- harvest stagee5
- Treatment
- fertilizatione5
- Outcome
- levels and accumulations of zince5
- Direction
- no_changeinferrede5
Not reportedComparator
Verbatim
t0“snap beans”
e5“at the harvest stage there is no influence of fertilization on the levels and accumulations of zinc in the plant”
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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.