Abstract
In many parts of the world it has become more economical to use triple superphosphate (TSP) rather than single superphosphate (SSP) as a pasture fertilizer where only P deficiency exists. Coating TSP with elemental S is an attractive alternative to SSP for situations where P and S deficiency exists. A pot experiment was conducted on an S deficient Aquic Haplustalf soil to compare the ability of gypsum (G) and S coated TSP to supply S to a ryegrass/white clover pasture over 14 repeated harvests over a 96 week period. The adhesives used to coat S to TSP were UNE1, UNE3, UNE2 and a commercial product (HF). The reverse dilution 35S technique was used to calculate fertilizer S uptake. Total yields were highest with G and UNE1. Total fertilizer S recovery by the pasture was 64.4% for G and 52.3% and 52.9% for UNEl and UNE3 respectively. These amounts were significantly higher than from UNE2 or HF. The time course of fertilizer S release varied between products and shows that bonding method can affect S availability from S coated TSP products.
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Claims 8
Claim · model-written summary
Total pasture yields were highest with gypsum.
- Taxon
- ryegrass/white clover
Trifolium repens
Loliume0 - Treatment
- gypsume0
- Outcome
- Total yieldse1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A pot experiment was conducted on an S deficient Aquic Haplustalf soil to compare the ability of gypsum (G) and S coated TSP to supply S to a ryegrass/white clover pasture over 14 repeated harvests over a 96 week period”
e1“Total yields were highest with G and UNE1”
Claim · model-written summary
Total pasture yields were highest with the UNE1 S-coated TSP.
- Taxon
- ryegrass/white cloverTrifolium repensLoliume0
- Treatment
- UNE1e1
- Outcome
- Total yieldse1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A pot experiment was conducted on an S deficient Aquic Haplustalf soil to compare the ability of gypsum (G) and S coated TSP to supply S to a ryegrass/white clover pasture over 14 repeated harvests over a 96 week period”
e1“Total yields were highest with G and UNE1”
Claim · model-written summary
Total fertilizer S recovery by the pasture was 64.4% for gypsum.
- Taxon
- ryegrass/white cloverTrifolium repensLoliume0
- Treatment
- Ge2
- Outcome
- Total fertilizer S recoverye2
- Value
- 64.4%e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A pot experiment was conducted on an S deficient Aquic Haplustalf soil to compare the ability of gypsum (G) and S coated TSP to supply S to a ryegrass/white clover pasture over 14 repeated harvests over a 96 week period”
e2“Total fertilizer S recovery by the pasture was 64.4% for G”
Claim · model-written summary
Total fertilizer S recovery by the pasture was 52.3% for UNE1.
- Taxon
- ryegrass/white cloverTrifolium repensLoliume0
- Treatment
- UNEle3
- Outcome
- Total fertilizer S recoverye2
- Value
- 52.3%e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A pot experiment was conducted on an S deficient Aquic Haplustalf soil to compare the ability of gypsum (G) and S coated TSP to supply S to a ryegrass/white clover pasture over 14 repeated harvests over a 96 week period”
e2“Total fertilizer S recovery by the pasture was 64.4% for G”
e3“52.3% and 52.9% for UNEl and UNE3 respectively”
Claim · model-written summary
Total fertilizer S recovery by the pasture was 52.9% for UNE3.
- Taxon
- ryegrass/white cloverTrifolium repensLoliume0
- Treatment
- UNE3e3
- Outcome
- Total fertilizer S recoverye2
- Value
- 52.9%e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A pot experiment was conducted on an S deficient Aquic Haplustalf soil to compare the ability of gypsum (G) and S coated TSP to supply S to a ryegrass/white clover pasture over 14 repeated harvests over a 96 week period”
e2“Total fertilizer S recovery by the pasture was 64.4% for G”
e3“52.3% and 52.9% for UNEl and UNE3 respectively”
Claim · model-written summary
S recovery from UNEl was significantly higher than from UNE2 or HF.
- Taxon
- ryegrass/white cloverTrifolium repensLoliume0
- Treatment
- UNEle3
- Outcome
- Total fertilizer S recoverye2
- Direction
- highere4
- Comparator
- UNE2 or HFe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A pot experiment was conducted on an S deficient Aquic Haplustalf soil to compare the ability of gypsum (G) and S coated TSP to supply S to a ryegrass/white clover pasture over 14 repeated harvests over a 96 week period”
e2“Total fertilizer S recovery by the pasture was 64.4% for G”
e3“52.3% and 52.9% for UNEl and UNE3 respectively”
e4“These amounts were significantly higher than from UNE2 or HF”
Claim · model-written summary
S recovery from UNE3 was significantly higher than from UNE2 or HF.
- Taxon
- ryegrass/white cloverTrifolium repensLoliume0
- Treatment
- UNE3e3
- Outcome
- Total fertilizer S recoverye2
- Direction
- highere4
- Comparator
- UNE2 or HFe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A pot experiment was conducted on an S deficient Aquic Haplustalf soil to compare the ability of gypsum (G) and S coated TSP to supply S to a ryegrass/white clover pasture over 14 repeated harvests over a 96 week period”
e2“Total fertilizer S recovery by the pasture was 64.4% for G”
e3“52.3% and 52.9% for UNEl and UNE3 respectively”
e4“These amounts were significantly higher than from UNE2 or HF”
Claim · model-written summary
Bonding method can affect S availability from S-coated TSP products, as the time course of fertilizer S release varied between products.
- Taxon
- ryegrass/white cloverTrifolium repensLoliume0
- Treatment
- bonding methode6
- Outcome
- fertilizer S releasee5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A pot experiment was conducted on an S deficient Aquic Haplustalf soil to compare the ability of gypsum (G) and S coated TSP to supply S to a ryegrass/white clover pasture over 14 repeated harvests over a 96 week period”
e5“The time course of fertilizer S release varied between products”
e6“bonding method can affect S availability from S coated TSP products”
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