Abstract
Abstract Enhancing plant nutrition during critical periods of water stress is a paramount objective. As such, this study aims to examine the effects that arise from implementing water stress regimes during the sensitive growth phases of groundnut. Furthermore, we will explore the impact of applying cobalt and potassium humate individually or in combination, either through foliar application (KH-F) or soil amendments (KH-S), to mitigate the adverse effects on nutrient accumulation, yield, and irrigation water use efficiency (Iwue). A field experiment was conducted between 2021 and 2022 using a split-split plot design. In the main plots, an additional control of full irrigation requirement scheme (IR100) was implemented, along with three other schemes: the first involved applying 75% of the irrigation requirement during the development stage (IRD75), the second applied 75% during the flowering till pod stage (IRF75), and the third involved applying 85% from the development stage till the pod stage (IR85). In the subplots, cobalt was applied at rates of 0 and 7.5 mg l −1 to the plants. The sub-sub plots were further divided to investigate the effects of KH-F and KH-S. Plants that experienced water stress during the flowering stage were found to be more vulnerable. However, when treated with KH-S, there were significant improvements in yield compared to KH-F treatment. This effect was particularly pronounced under the IRF75 irrigation scheme. Interestingly, there was an antagonistic relationship observed between cobalt and iron or manganese, in contrast to other nutrients. When KH-S was applied in combination with cobalt, it showed the potential to enhance various characteristics and increase the uptake of iron or manganese. The highest yield, nutrient accumulation, and Iwue were achieved through the combined application of cobalt and KH-S, along with adopting the IR85% irrigation scheme.
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Claims 7
Claim · model-written summary
Groundnut was more vulnerable to water stress at flowering.
- Taxon
- groundnut
Arachis hypogaeat0 - Organ / stage
- flowering stagee0
- Treatment
- water stresse0
- Outcome
- more vulnerablee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants that experienced water stress during the flowering stage were found to be more vulnerable.”
t0“Groundnut”
Claim · model-written summary
Soil potassium humate significantly improved yield compared with foliar application, especially under IRF75.
- Taxon
- GroundnutArachis hypogaeat0
- Treatment
- KH-Se0
- Outcome
- yielde0
- Direction
- improvementse0
- Qualifier
- IRF75 irrigation schemee0
- Comparator
- KH-F treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when treated with KH-S, there were significant improvements in yield compared to KH-F treatment. This effect was particularly pronounced under the IRF75 irrigation scheme.”
t0“Groundnut”
Claim · model-written summary
Cobalt showed an antagonistic relation with iron or manganese.
- Taxon
- GroundnutArachis hypogaeat0
- Compound
- cobalte0
- Outcome
- iron or manganesee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was an antagonistic relationship observed between cobalt and iron or manganese, in contrast to other nutrients.”
t0“Groundnut”
Claim · model-written summary
Soil potassium humate with cobalt increased iron or manganese uptake.
- Taxon
- GroundnutArachis hypogaeat0
- Treatment
- KH-S was applied in combination with cobalte0
- Outcome
- uptake of iron or manganesee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When KH-S was applied in combination with cobalt, it showed the potential to enhance various characteristics and increase the uptake of iron or manganese.”
t0“Groundnut”
Claim · model-written summary
Cobalt plus soil potassium humate under IR85% attained highest yield.
- Taxon
- GroundnutArachis hypogaeat0
- Treatment
- combined application of cobalt and KH-Se0
- Outcome
- yielde0
- Direction
- higheste0
- Qualifier
- IR85% irrigation schemee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest yield, nutrient accumulation, and Iwue were achieved through the combined application of cobalt and KH-S, along with adopting the IR85% irrigation scheme.”
t0“Groundnut”
Claim · model-written summary
That combination attained highest nutrient accumulation.
- Taxon
- GroundnutArachis hypogaeat0
- Treatment
- combined application of cobalt and KH-Se0
- Outcome
- nutrient accumulatione0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest yield, nutrient accumulation, and Iwue were achieved through the combined application of cobalt and KH-S, along with adopting the IR85% irrigation scheme.”
t0“Groundnut”
Claim · model-written summary
That combination attained highest irrigation water use efficiency.
- Taxon
- GroundnutArachis hypogaeat0
- Treatment
- combined application of cobalt and KH-Se0
- Outcome
- Iwuee0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest yield, nutrient accumulation, and Iwue were achieved through the combined application of cobalt and KH-S, along with adopting the IR85% irrigation scheme.”
t0“Groundnut”
The same questions in other papers
cobalt atom · nutrient: content · Arachis hypogaea (peanut)Positive and negative results
7 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
5 papers more in this group
See all 9 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.