Abstract
Reducing the risk of Zn-deficiency in humans by diversifying human diet and through agricultural interventions, such as agronomic biofortification, is still a major challenge. This greenhouse study used a number of biofortification strategies to investigate the effect of Zn fertilization on soybean grain cultivars intended for human consumption. A completely randomized 53 factorial design with four replications was used. The design included five different Zn application strategies as the main plot. These were (1) soil application; (2) foliar application at the vegetative growth stage 4 (V4) growth stage; (3) foliar application at vegetative growth stage 8 (V8); (4) foliar application at reproductive growth stage 4 (R4); and (5) a control (without Zn). Three soybean cultivars (BRS 213, BRSMG 790A, and BRS Favorita RR ) were assigned as sub-plots. Zinc foliar fertilization at stage R4 was found to be the most efficient method for soybean cultivation when Zn availability in the soil was low. The cultivars had different Zn accumulation responses, and the cultivar BRSMG showed the highest Zn increase. Zinc fertilization increased the protein content in soybean grain, plant height, and the number of grains per plant.
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Claims 6
Claim · model-written summary
Foliar zinc at R4 was the most efficient method when soil zinc was low.
- Taxon
- soybean
Glycine maxt0 - Treatment
- Zinc foliar fertilization at stage R4e0
- Outcome
- most efficient method for soybean cultivatione0
- Direction
- most efficiente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Zinc foliar fertilization at stage R4 was found to be the most efficient method for soybean cultivation when Zn availability in the soil was low”
t0“soybean”
Claim · model-written summary
Cultivars differed in zinc accumulation responses.
- Taxon
- soybean
Glycine maxt0 - Outcome
- different Zn accumulation responsese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The cultivars had different Zn accumulation responses”
t0“soybean”
Claim · model-written summary
BRSMG showed the highest zinc increase.
- Taxon
- soybean
Glycine maxt0 - Material
- BRSMGe0
- Outcome
- Zn increasee0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“the cultivar BRSMG showed the highest Zn increase”
t0“soybean”
Claim · model-written summary
Zinc fertilization increased grain protein content.
- Taxon
- soybean
Glycine maxt0 - Treatment
- Zinc fertilizatione0
- Outcome
- protein content in soybean graine0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Zinc fertilization increased the protein content in soybean grain, plant height, and the number of grains per plant”
t0“soybean”
Claim · model-written summary
Zinc fertilization increased plant height.
- Taxon
- soybean
Glycine maxt0 - Treatment
- Zinc fertilizatione0
- Outcome
- plant heighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Zinc fertilization increased the protein content in soybean grain, plant height, and the number of grains per plant”
t0“soybean”
Claim · model-written summary
Zinc fertilization increased grains per plant.
- Taxon
- soybean
Glycine maxt0 - Treatment
- Zinc fertilizatione0
- Outcome
- number of grains per plante0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Zinc fertilization increased the protein content in soybean grain, plant height, and the number of grains per plant”
t0“soybean”
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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.