Abstract
Field experiments were conducted in different sites of the humid area of the Argentine Pampas Region during two successive years. The objective was to evaluate the influence of different sulphur sources (elemental and sulphate form) on grain yield of wheat ( Triticum aestivum L.). This region has a temperate climate; average annual rainfall is 980 mm and mean annual temperature 16°C. The S sources used in the experiments were: micronized elemental sulphur (ES, 95% of S) and standard ammonium sulphate (AS, 21? 0?0+24% of S). A randomized complete block experime ntal design with 4 or 6 replications was used with factorial arrangement. Factor 1 was sulphur source and factor 2 was the S rate. Sulphur rates were 10 and 30 kg/ha (year 1) and 15 and 30 kg/ha (year 2). A check treatment was included. Data were analyzed through factorial analysis of the variance (ANOVA). There was a significative fertilization effect (p<0.05) in 80 % of sites and response was in the range of 231?857 kg/h a (mean response=600 kg/ha) during the first year. During second year a significant response was observed in all sites, with a range of 702?2119 kg/ha (m ean response=1228 kg/ha). As a general trend, no significant source effects on S response were detected. Thus, in most sites S fertilizer effectiveness was not significatively affected by sulphur form or water solubility. However, in few sites, better behavior of S as sulphate was found. There was not S rate effect, and lower rate of S (10 or 15 kg/ha) was enough to provide S for the levels of yields obtained in present experiments.
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Claims 6
Claim · model-written summary
Sulphur fertilization significantly increased wheat grain yield in 80% of sites in the first year, with a mean response of 600 kg/ha over the check.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- fertilizatione1
- Outcome
- grain yieldt0
- Direction
- increaseinferrede1
- Value
- 600 kg/hae1
- Qualifier
- p<0.05e1
- Comparator
- check treatmente2
- Setting
- Argentine Pampas Regione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grain yield of wheat”
e0“Field experiments were conducted in different sites of the humid area of the Argentine Pampas Region during two successive years”
e1“There was a significative fertilization effect (p<0.05) in 80 % of sites and response was in the range of 231?857 kg/h a (mean response=600 kg/ha) during the first year”
e2“A check treatment was included”
Claim · model-written summary
In the second year sulphur fertilization gave a significant grain yield response in all sites, with a mean response of 1228 kg/ha.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- different sulphur sourcese7
- Outcome
- grain yieldt0
- Direction
- increaseinferrede3
- Value
- 1228 kg/hae3
- Comparator
- check treatmente2
- Setting
- Argentine Pampas Regione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grain yield of wheat”
e0“Field experiments were conducted in different sites of the humid area of the Argentine Pampas Region during two successive years”
e3“During second year a significant response was observed in all sites, with a range of 702?2119 kg/ha (m ean response=1228 kg/ha)”
e7“different sulphur sources (elemental and sulphate form)”
e2“A check treatment was included”
Claim · model-written summary
No significant effect of sulphur form on S response was detected as a general trend.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- sulphur forme7
- Outcome
- S responsee4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grain yield of wheat”
e4“As a general trend, no significant source effects on S response were detected”
e7“S fertilizer effectiveness was not significatively affected by sulphur form or water solubility”
Claim · model-written summary
In few sites, S applied as sulphate showed better behavior than elemental S.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- S as sulphatee5
- Outcome
- behavior of Se5
- Direction
- bettere5
- Qualifier
- in few sitese5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grain yield of wheat”
e5“However, in few sites, better behavior of S as sulphate was found”
Claim · model-written summary
There was no effect of the S rate on the response.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- S ratee6
- Outcome
- S rate effecte6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grain yield of wheat”
e6“There was not S rate effect, and lower rate of S (10 or 15 kg/ha) was enough to provide S for the levels of yields obtained in present experiments”
Claim · model-written summary
A lower S rate of 10 or 15 kg/ha was enough to supply S for the yield levels obtained.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- lower rate of Se6
- Value
- 10 or 15 kg/hae6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grain yield of wheat”
e6“There was not S rate effect, and lower rate of S (10 or 15 kg/ha) was enough to provide S for the levels of yields obtained in present experiments”
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