Abstract
The soybean varieties Lee, Forrest, Bragg and Dodds were studied in zinc fertilization experiments at three sites in central and north-west New South Wales. At each site foliar sprays of ZnSO47H2O were applied before flowering. At Narrabri one spray of 4 kg ha-1 gave a yield increase of 13%. At Trangie and Breeza, two sprays each of 4 kg ha-1 increased yield by 57% and 208%, respectively. Lee was the least responsive variety at each site and Dodds or Forrest the most responsive to applied zinc. Zinc fertilizer increased plant height, foliar zinc concentration, oil content (at two sites) but decreased leaf phosphorus content. Leaf concentrations of phosphorus in untreated plots were indicative of varietal sensitivity to zinc deficiency both within and between sites. The yield increases at Narrabri were obtained even though no visual symptoms were observed. Improvement of soybean yields with zinc fertilizer in seemingly healthy crops is worthy of further investigation.
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Claims 10
Claim · model-written summary
One foliar zinc spray increased soybean yield 13% at Narrabri.
- Taxon
- soybean
Glycine maxt0 - Treatment
- one spray of 4 kg ha-1e0
- Outcome
- yielde0
- Direction
- increasee0
- Value
- 13%e0
- Setting
- Narrabrie0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At Narrabri one spray of 4 kg ha-1 gave a yield increase of 13%.”
t0“soybean varieties”
Claim · model-written summary
Two foliar zinc sprays increased soybean yield 57% at Trangie.
- Taxon
- soybeanGlycine maxt0
- Treatment
- two sprays each of 4 kg ha-1e0
- Outcome
- yielde0
- Direction
- increasede0
- Value
- 57%e0
- Setting
- Trangiee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At Trangie and Breeza, two sprays each of 4 kg ha-1 increased yield by 57% and 208%, respectively.”
t0“soybean varieties”
Claim · model-written summary
Two foliar zinc sprays increased soybean yield 208% at Breeza.
- Taxon
- soybeanGlycine maxt0
- Treatment
- two sprays each of 4 kg ha-1e0
- Outcome
- yielde0
- Direction
- increasede0
- Value
- 208%e0
- Setting
- Breezae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At Trangie and Breeza, two sprays each of 4 kg ha-1 increased yield by 57% and 208%, respectively.”
t0“soybean varieties”
Claim · model-written summary
Lee was the least responsive variety to zinc at each site.
- Taxon
- soybeanGlycine maxt0
- Material
- Leee0
- Outcome
- least responsive varietye0
- Direction
- least responsivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lee was the least responsive variety at each site”
t0“soybean varieties”
Claim · model-written summary
Dodds or Forrest was the most responsive variety to zinc.
- Taxon
- soybeanGlycine maxt0
- Material
- Dodds or Forreste0
- Outcome
- most responsivee0
- Direction
- most responsivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dodds or Forrest the most responsive to applied zinc.”
t0“soybean varieties”
Claim · model-written summary
Zinc fertilizer increased plant height and foliar zinc concentration.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Zinc fertilizere0
- Outcome
- plant height, foliar zinc concentratione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc fertilizer increased plant height, foliar zinc concentration, oil content (at two sites)”
t0“soybean varieties”
Claim · model-written summary
Zinc fertilizer increased oil content at two sites.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Zinc fertilizere0
- Outcome
- oil contente0
- Direction
- increasede0
- Qualifier
- at two sitese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc fertilizer increased plant height, foliar zinc concentration, oil content (at two sites)”
t0“soybean varieties”
Claim · model-written summary
Zinc fertilizer decreased leaf phosphorus content.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Zinc fertilizere0
- Outcome
- leaf phosphorus contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc fertilizer increased plant height, foliar zinc concentration, oil content (at two sites) but decreased leaf phosphorus content.”
t0“soybean varieties”
Claim · model-written summary
Untreated leaf phosphorus concentration indicated varietal zinc deficiency sensitivity.
- Taxon
- soybeanGlycine maxt0
- Compound
- phosphoruse0
- Outcome
- varietal sensitivity to zinc deficiencye0
- Setting
- untreated plotse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf concentrations of phosphorus in untreated plots were indicative of varietal sensitivity to zinc deficiency both within and between sites.”
t0“soybean varieties”
Claim · model-written summary
Zinc increased yield at Narrabri without visible deficiency symptoms.
- Taxon
- soybeanGlycine maxt0
- Outcome
- no visual symptomse0
- Setting
- Narrabrie0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield increases at Narrabri were obtained even though no visual symptoms were observed.”
t0“soybean varieties”
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