Abstract
A field experiment was conducted for three years starting from 2002 to 2004–05 on a loamy sand soil (DTPA-Cu 0.27 mg kg−1 soil) classed as a Typic Ustipssament to study the effect of mode of Cu fertilization on the yield and Cu nutrition of soybean and wheat grown in rotation. The treatments consisted of one time soil application of 5 and 10 kg Cu ha−1 to first soybean crop only and three foliar applications each of 0.2, 0.4 and 0.6% copper sulphate (CuSO4.5H2O) solution to each crop at weekly intervals. Grain yield of soybean increased significantly by 2.7 q ha−1 (11.1%) over control with soil application of 5 kg Cu ha−1 during first year. Averaged over three years, its yield increased significantly by 2 q ha−1 (9.0%) over control with application of 5 kg Cu ha−1. However, the nonsignificant differences between mean grain yield of soybean produced with soil application of 5 kg Cu ha−1 and three foliar applications of 0.2% CuSO4.5H2O proved them to be equally efficient in meeting the Cu requirement of soybean grown in soils with marginal Cu supplying capacity. The residual effect of soil applied Cu as well as foliar application of Cu on the grain and straw yield of wheat was not significant during the period of study. Concentration and uptake of Cu by grain and straw of both the crops increased significantly over control with Cu fertilization irrespective of the mode of their application. Availability of Cu in soil increased while that of Zn decreased significantly due to soil application of Cu.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 8
Claim · model-written summary
Soil application of 5 kg Cu per hectare increased first-year soybean grain yield by 2.7 q per hectare (11.1%) over control.
- Taxon
- soybean
Glycine maxe0 - Treatment
- soil application of 5 kg Cu ha−1e0
- Outcome
- Grain yielde0
- Direction
- increasede0
- Value
- 2.7 q ha−1 (11.1%)e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield of soybean increased significantly by 2.7 q ha−1 (11.1%) over control with soil application of 5 kg Cu ha−1 during first year.”
Claim · model-written summary
Across three years, the same application increased mean soybean yield by 2 q per hectare (9.0%) over control.
- Taxon
- soybeanGlycine maxt0
- Treatment
- application of 5 kg Cu ha−1e0
- Outcome
- yielde0
- Direction
- increasede0
- Value
- 2 q ha−1 (9.0%)e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Averaged over three years, its yield increased significantly by 2 q ha−1 (9.0%) over control with application of 5 kg Cu ha−1.”
t0“soybean”
Claim · model-written summary
Soil and foliar Cu application produced nonsignificantly different mean soybean grain yields.
- Taxon
- soybeanGlycine maxe0
- Treatment
- soil application of 5 kg Cu ha−1e0
- Outcome
- mean grain yielde0
- Comparator
- three foliar applications of 0.2% CuSO4.5H2Oe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nonsignificant differences between mean grain yield of soybean produced with soil application of 5 kg Cu ha−1 and three foliar applications of 0.2% CuSO4.5H2O”
Claim · model-written summary
Residual soil applied copper had no significant effect on wheat grain and straw yield.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- soil applied Cue0
- Outcome
- grain and straw yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The residual effect of soil applied Cu as well as foliar application of Cu on the grain and straw yield of wheat was not significant”
Claim · model-written summary
Foliar copper had no significant effect on wheat grain and straw yield.
- Taxon
- wheatTriticum aestivume0
- Treatment
- foliar application of Cue0
- Outcome
- grain and straw yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar application of Cu on the grain and straw yield of wheat was not significant”
Claim · model-written summary
Copper fertilization increased copper concentration and uptake in grain and straw of both crops.
Verbatim
e0“Concentration and uptake of Cu by grain and straw of both the crops increased significantly over control with Cu fertilization irrespective of the mode of their application.”
t0“soybean-wheat”
Claim · model-written summary
Soil copper application increased soil Cu availability.
- Taxon
- soybean-wheatt0
- Treatment
- soil application of Cue0
- Outcome
- Availability of Cu in soile0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Availability of Cu in soil increased while that of Zn decreased significantly due to soil application of Cu.”
t0“soybean-wheat”
Claim · model-written summary
Soil copper application significantly decreased soil Zn availability.
Not reportedComparator
Verbatim
e0“Availability of Cu in soil increased while that of Zn decreased significantly due to soil application of Cu.”
t0“soybean-wheat”
The same questions in other papers
copper atom · yield · Glycine max (soybean)Results differ
13 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- negative
- no effect
14 papers more in this group
See all 18 papers →copper atom · yield · Triticum aestivum (wheat)Results differ
11 papers in the same direction as this paper · 63 in the opposite direction
- positive
- positive
- positive
71 papers more in this group
See all 75 papers →application · yield · Glycine max (soybean)Positive and negative results
331 papers in the same direction as this paper · 66 in the opposite direction · 6 reporting no difference from an alternative
- negative
- no effect
- no effect
400 papers more in this group
See all 404 papers →application · yield · Triticum aestivum (wheat)Positive and negative results
81 papers in the same direction as this paper · 795 in the opposite direction
- positive
- positive
- positive
873 papers more in this group
See all 877 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.