Abstract
Abstract Water stress is an important factor that substantially impacts crop production. As a result, there is a need for various strategies that can mitigate these negative effects. One such strategy is the application of potassium humate (Kh) and cobalt (Co), which have been reported to enhance the resistance of crop plants. Therefore, the present experiment was designed to investigate whether the application of Kh and Co could positively affect proline, chlorophyll and mineral elements contents, and antioxidant defense systems which in turn will mitigate the negative impact of water stress under different irrigation strategies. In 2021 and 2022, an open-field experiments were conducted by using a split-plot design. The main plots were divided to represent different irrigation strategies (ST), with additional control of full irrigation requirements (ST1). Four STs were implemented, with ST1, followed by the application of 75%, 50%, and 25% irrigation strategies in ST2, ST3, and ST4 respectively, in the next irrigation, followed by the full requirements, and so on. In the subplots, peanut plants were treated with tap water (Control), Kh at 2 g l −1 and 3 g l −1 , Co, Co + Kh 2 g l −1 and Co + Kh 3 g l −1 . The yield was negatively affected by the implementation of ST4, despite the increase in proline contents. Furthermore, there was a decrease in relative water content, chlorophyll content, antioxidant enzymes, protein, and mineral nutrient elements. However, the application of Kh or Co showed better improvements in most of the studied parameters. It is worth noting that there was an antagonistic relationship between Co and iron/manganese, and the intensity of this relationship was found to depend on the STs implemented. The highest mineral nutrient accumulation, chlorophyll content, relative water content, protein content, oil content, seed yield, and water productivity were observed when peanut plants were treated with Kh 3 g l −1 + Co under the ST2 water strategy.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
The ST4 irrigation strategy reduced yield.
- Taxon
- peanut
Arachis hypogaeat0 - Treatment
- ST4e0
- Outcome
- yielde0
- Direction
- negatively affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield was negatively affected by the implementation of ST4”
t0“peanut”
Claim · model-written summary
ST4 increased proline content.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- ST4e0
- Outcome
- proline contentse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield was negatively affected by the implementation of ST4, despite the increase in proline contents.”
t0“peanut”
Claim · model-written summary
Water stress decreased relative water content and chlorophyll.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- water stresst0
- Outcome
- relative water content, chlorophyll contente0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was a decrease in relative water content, chlorophyll content, antioxidant enzymes, protein, and mineral nutrient elements.”
t0“peanut tolerance to water stress”
Claim · model-written summary
Water stress decreased antioxidant enzymes, protein, and mineral nutrients.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- water stresst0
- Outcome
- antioxidant enzymes, protein, and mineral nutrient elementse0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was a decrease in relative water content, chlorophyll content, antioxidant enzymes, protein, and mineral nutrient elements.”
t0“peanut tolerance to water stress”
Claim · model-written summary
Kh or Co improved most measured parameters.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- Kh or Coe0
- Outcome
- most of the studied parameterse0
- Direction
- better improvementse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of Kh or Co showed better improvements in most of the studied parameters.”
t0“peanut”
Claim · model-written summary
Co had an antagonistic relation with iron and manganese that depended on irrigation strategy.
- Taxon
- peanutArachis hypogaeat0
- Compound
- Coe0
- Outcome
- antagonistic relationship between Co and iron/manganesee0
- Qualifier
- depend on the STs implementede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was an antagonistic relationship between Co and iron/manganese, and the intensity of this relationship was found to depend on the STs implemented.”
t0“peanut”
Claim · model-written summary
Kh 3 g l−1 plus Co with ST2 produced the highest mineral nutrients, chlorophyll and relative water content.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- Kh 3 g l −1 + Coe0
- Outcome
- mineral nutrient accumulation, chlorophyll content, relative water contente0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest mineral nutrient accumulation, chlorophyll content, relative water content, protein content, oil content, seed yield, and water productivity were observed when peanut plants were treated with Kh 3 g l −1 + Co under the ST2 water strategy.”
Claim · model-written summary
Kh 3 g l−1 plus Co with ST2 produced the highest protein and oil content and seed yield.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- Kh 3 g l −1 + Coe0
- Outcome
- protein content, oil content, seed yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest mineral nutrient accumulation, chlorophyll content, relative water content, protein content, oil content, seed yield, and water productivity were observed when peanut plants were treated with Kh 3 g l −1 + Co under the ST2 water strategy.”
Claim · model-written summary
Kh 3 g l−1 plus Co with ST2 produced the highest water productivity.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- Kh 3 g l −1 + Coe0
- Outcome
- water productivitye0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest mineral nutrient accumulation, chlorophyll content, relative water content, protein content, oil content, seed yield, and water productivity were observed when peanut plants were treated with Kh 3 g l −1 + Co under the ST2 water strategy.”
The same questions in other papers
drought · physiology: antioxidant enzymes · Arachis hypogaea (peanut)Results differ
2 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
1 paper more in this group
See all 5 papers →drought · physiology: water · Arachis hypogaea (peanut)Results differ
9 papers in the same direction as this paper · 15 in the opposite direction
- positive
- positive
- positive
21 papers more in this group
See all 25 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.