Abstract
The critical limit for zinc (Zn) varies from 0.38 to 2 µg/g soil depending on the crop and soil type. However, the critical limit for Zn was not explored recently for rice and potato cultivation in the floodplain soils of Bangladesh. A pot experiment was conducted to determine the critical limits of Zn in soil and plants for rice and potato cultivation in two agro-ecological zones (AEZs) of Bangladesh. The soil samples were collected from 20 different locations of Old Brahmaputra and Active Ganges Floodplains with low (<0.9 µg/g), medium (0.91–1.80 µg/g) and high (>1.80 µg/g) Zn status. The experiment was laid out in a factorial and completely randomized design with two levels of Zn (Zn0 and Zn1 (0 and 4.87 kg/ha as Zn sulphate)) applied to 20 different soil samples for rice and potato cultivation using three replications. The critical limit of Zn was determined through a graphical and statistical approach and crops were harvested at the stem elongation (for rice) and tuber filling (for potato) stage. The critical limit of Zn in soil for rice was found to be 0.8 and 0.85 µg/g by graphical and statistical methods, respectively, and both methods revealed the same value (0.73 µg/g) for potato. The critical limit of Zn in rice plants was 23.9 and 24.32 µg/g, whereas in potato plants it was 27.1 and 26.61 µg/g, determined by graphical and statistical methods, respectively. The added Zn supply in soil significantly increased the dry matter accumulation in rice (by 5.6%) and potato (by 10%) compared to no Zn supply. Therefore, a significant positive response to added Zn could be observed on crop growth and yield when the Zn concentration remained below the mentioned critical level for rice and potato cultivation in floodplain soils of Bangladesh.
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Claims 11
Claim · model-written summary
The graphical method estimated a rice soil zinc critical limit of 0.8 µg/g.
- Taxon
- rice
Oryza sativae0 - Outcome
- critical limit of Zn in soile0
- Value
- 0.8e0
- Qualifier
- graphicale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The critical limit of Zn in soil for rice was found to be 0.8 and 0.85 µg/g by graphical and statistical methods, respectively”
Claim · model-written summary
The statistical method estimated a rice soil zinc critical limit of 0.85 µg/g.
- Taxon
- riceOryza sativae0
- Outcome
- critical limit of Zn in soile0
- Value
- 0.85 µg/ge0
- Qualifier
- statisticale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The critical limit of Zn in soil for rice was found to be 0.8 and 0.85 µg/g by graphical and statistical methods, respectively”
Claim · model-written summary
Both methods estimated a potato soil zinc critical limit of 0.73 µg/g.
- Taxon
- potato
Solanum tuberosume0 - Outcome
- same valuee0
- Value
- 0.73 µg/ge0
- Qualifier
- both methodse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both methods revealed the same value (0.73 µg/g) for potato”
Claim · model-written summary
The graphical method estimated the plant zinc critical limit for rice at 23.9 µg/g.
- Taxon
- rice plantsOryza sativae0
- Outcome
- critical limit of Zne0
- Value
- 23.9e0
- Qualifier
- graphicale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The critical limit of Zn in rice plants was 23.9 and 24.32 µg/g, whereas in potato plants it was 27.1 and 26.61 µg/g, determined by graphical and statistical methods, respectively”
Claim · model-written summary
The statistical method estimated the plant zinc critical limit for rice at 24.32 µg/g.
- Taxon
- rice plantsOryza sativae0
- Outcome
- critical limit of Zne0
- Value
- 24.32 µg/ge0
- Qualifier
- statisticale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The critical limit of Zn in rice plants was 23.9 and 24.32 µg/g, whereas in potato plants it was 27.1 and 26.61 µg/g, determined by graphical and statistical methods, respectively”
Claim · model-written summary
The graphical method estimated the plant zinc critical limit for potato at 27.1 µg/g.
- Taxon
- potato plantsSolanum tuberosume0
- Outcome
- critical limit of Zne0
- Value
- 27.1e0
- Qualifier
- graphicale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The critical limit of Zn in rice plants was 23.9 and 24.32 µg/g, whereas in potato plants it was 27.1 and 26.61 µg/g, determined by graphical and statistical methods, respectively”
Claim · model-written summary
The statistical method estimated the plant zinc critical limit for potato at 26.61 µg/g.
- Taxon
- potato plantsSolanum tuberosume0
- Outcome
- critical limit of Zne0
- Value
- 26.61 µg/ge0
- Qualifier
- statisticale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The critical limit of Zn in rice plants was 23.9 and 24.32 µg/g, whereas in potato plants it was 27.1 and 26.61 µg/g, determined by graphical and statistical methods, respectively”
Claim · model-written summary
Added soil zinc increased rice dry matter by 5.6% compared with no zinc.
- Taxon
- riceOryza sativae0
- Treatment
- added Zn supply in soile0
- Outcome
- dry matter accumulatione0
- Direction
- increasede0
- Value
- 5.6%e0
- Comparator
- no Zn supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The added Zn supply in soil significantly increased the dry matter accumulation in rice (by 5.6%) and potato (by 10%) compared to no Zn supply”
Claim · model-written summary
Added soil zinc increased potato dry matter by 10% compared with no zinc.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- added Zn supply in soile0
- Outcome
- dry matter accumulatione0
- Direction
- increasede0
- Value
- 10%e0
- Comparator
- no Zn supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The added Zn supply in soil significantly increased the dry matter accumulation in rice (by 5.6%) and potato (by 10%) compared to no Zn supply”
Claim · model-written summary
Added zinc gave a significant positive growth and yield response below the critical level in rice.
- Taxon
- riceOryza sativae0
- Treatment
- added Zne0
- Outcome
- crop growth and yielde0
- Direction
- positivee0
- Qualifier
- below the mentioned critical levele0
- Setting
- floodplain soils of Bangladeshe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a significant positive response to added Zn could be observed on crop growth and yield when the Zn concentration remained below the mentioned critical level for rice and potato cultivation in floodplain soils of Bangladesh”
Claim · model-written summary
Added zinc gave a significant positive growth and yield response below the critical level in potato.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- added Zne0
- Outcome
- crop growth and yielde0
- Direction
- positivee0
- Qualifier
- below the mentioned critical levele0
- Setting
- floodplain soils of Bangladeshe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a significant positive response to added Zn could be observed on crop growth and yield when the Zn concentration remained below the mentioned critical level for rice and potato cultivation in floodplain soils of Bangladesh”
The same questions in other papers
zinc atom · yield · Solanum tuberosum (potato)Results differ
32 papers in the same direction as this paper · 5 in the opposite direction
- positive
- no effect
- no effect
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See all 38 papers →zinc atom · yield · Oryza sativa (rice)Results differ
388 papers in the same direction as this paper · 28 in the opposite direction · 2 reporting no difference from an alternative
- positive
- positive
- positive
415 papers more in this group
See all 419 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.