Abstract
2 experiments to investigate the requirements of sorghum and groundnut grown on Malaysian peat soil for Cu, Mn, Zn, Fe, Mo and B are described. The first experiment showed that only Cu was needed when growing sorghum and groundnut on peat. Plant survival and seed and total DM yields were greatly improved by applying 20 kg CuSO4/ha. Application of Cu also enhanced the absorption of Cu, Fe, Zn and Mn. The 2nd experiment showed that 10 kg CuSO4/ha produced the same effects on crop yields as 20 kg/ha. Sorghum leaf Cu content was increased from about 16 p.p.m. to about 28 p.p.m. by the addition of 10 or 20 kg CuSO4/ha. Groundnut leaf Cu content was similarly increased from 3.6 p.p.m. to about 4.5 p.p.m. In both experiments, each crop of groundnut or sorghum only recovered c. 20-30 g/ha of the applied Cu
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Claims 7
Claim · model-written summary
Only copper was required for sorghum and groundnut on peat.
- Taxon
- sorghum and groundnut
Arachis hypogaea
Sorghume0 - Outcome
- Cu was needede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only Cu was needed when growing sorghum and groundnut on peat”
Claim · model-written summary
20 kg CuSO4/ha greatly improved survival and seed and total dry matter yields.
- Taxon
- groundnuts (Arachis hypogaea) and sorghum (Sorghum bicolor)Arachis hypogaea
Sorghum bicolort0 - Treatment
- 20 kg CuSO4/hae0
- Outcome
- Plant survival and seed and total DM yieldse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant survival and seed and total DM yields were greatly improved by applying 20 kg CuSO4/ha”
t0“groundnuts (Arachis hypogaea) and sorghum (Sorghum bicolor)”
Claim · model-written summary
Copper application enhanced absorption of Cu, Fe, Zn and Mn.
- Taxon
- groundnuts (Arachis hypogaea) and sorghum (Sorghum bicolor)Arachis hypogaeaSorghum bicolort0
- Treatment
- Cue0
- Outcome
- absorption of Cu, Fe, Zn and Mne0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of Cu also enhanced the absorption of Cu, Fe, Zn and Mn”
t0“groundnuts (Arachis hypogaea) and sorghum (Sorghum bicolor)”
Claim · model-written summary
10 kg CuSO4/ha and 20 kg/ha produced the same crop yield effects.
- Taxon
- groundnuts (Arachis hypogaea) and sorghum (Sorghum bicolor)Arachis hypogaeaSorghum bicolort0
- Treatment
- 10 kg CuSO4/hae0
- Outcome
- crop yieldse0
- Direction
- samee0
- Comparator
- 20 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“10 kg CuSO4/ha produced the same effects on crop yields as 20 kg/ha”
t0“groundnuts (Arachis hypogaea) and sorghum (Sorghum bicolor)”
Claim · model-written summary
Copper raised sorghum leaf Cu from about 16 to 28 p.p.m.
- Treatment
- 10 or 20 kg CuSO4/hae0
- Outcome
- leaf Cu contente0
- Direction
- increasede0
- Value
- about 28 p.p.m.e0
- Qualifier
- about 16 p.p.m.e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum leaf Cu content was increased from about 16 p.p.m. to about 28 p.p.m. by the addition of 10 or 20 kg CuSO4/ha”
Claim · model-written summary
Copper raised groundnut leaf Cu from 3.6 to about 4.5 p.p.m.
- Taxon
- GroundnutArachis hypogaeae0
- Treatment
- Cue0
- Outcome
- leaf Cu contente0
- Direction
- increasede0
- Value
- about 4.5 p.p.m.e0
- Qualifier
- 3.6 p.p.m.e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Groundnut leaf Cu content was similarly increased from 3.6 p.p.m. to about 4.5 p.p.m.”
t0“applied copper”
Claim · model-written summary
Each groundnut or sorghum crop recovered about 20-30 g/ha of applied Cu.
- Taxon
- groundnut or sorghumArachis hypogaeaSorghume0
- Outcome
- recoverede0
- Value
- c. 20-30 g/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“each crop of groundnut or sorghum only recovered c. 20-30 g/ha of the applied Cu”
The same questions in other papers
copper atom · nutrient: content · Sorghum bicolor (sorghum)Positive and negative results
1 in the opposite direction
- negative
copper(II) sulfate · yield · Arachis hypogaea (peanut)Results agree
1 paper in the same direction as this paper
- positive
copper atom · nutrient: content · Arachis hypogaea (peanut)Results agree
1 paper in the same direction as this paper
- positive
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.