Abstract
A field experiment was carried out to evaluate the effect of sulphur nutrition at 0, 7.5, 10, 20, 30, 40 and 50 kg S/ha on pyruvic acid and storage life of onion bulbs in Vertic Haplustepts. Besides that, the effect of sulphur nutrition on soil available sulphur level, marketable bulb yield and sulphur uptake were also assessed. The results of this study revealed that sulphur application increased marketable bulb yield, sulphur uptake and pungency level over no sulphur treatment. Moreover the increase in bulb yield and sulphur uptake was less with increasing the sulphur level beyond 20 kg/ ha. The pyruvic acid content had significant and positive correlation with sulphur application (r 2 =0.735**). Sulphur application did not influence the storage life of onion bulbs significantly and showed no significant correlation with total storage losses of onion bulbs (r 2 = -0.0828). Soil sulphur level after harvest was increased over the initial values with application of sulphur @ 30, 40 and 50 kg S/ha while application of 7.5 kg S/ha and control without sulphur reduced soil available sulphur content. From this study, we conclude that sulfur nutrition is essential for increasing the onion yield and pungency level in soils having sufficient sulphur. However, excess sulphur application did not influence the yield and pungency level significantly. The storage life of onion bulbs were not influenced significantly by sulphur nutrition and application of either low or higher sulphur is detrimental to soil health.
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Claims 15
Claim · model-written summary
Sulphur application increased marketable onion bulb yield over no sulphur.
- Taxon
- onion
Allium cepat0 - Treatment
- sulphur applicatione0
- Outcome
- marketable bulb yielde0
- Direction
- increasede0
- Comparator
- no sulphur treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion”
e0“sulphur application increased marketable bulb yield, sulphur uptake and pungency level over no sulphur treatment”
Claim · model-written summary
Sulphur application increased onion sulphur uptake.
- Taxon
- onionAllium cepat0
- Treatment
- sulphur applicatione0
- Outcome
- sulphur uptakee0
- Direction
- increasede0
- Comparator
- no sulphur treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion”
e0“sulphur application increased marketable bulb yield, sulphur uptake and pungency level over no sulphur treatment”
Claim · model-written summary
Sulphur application increased onion pungency.
- Taxon
- onionAllium cepat0
- Treatment
- sulphur applicatione0
- Outcome
- pungency levele0
- Direction
- increasede0
- Comparator
- no sulphur treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion”
e0“sulphur application increased marketable bulb yield, sulphur uptake and pungency level over no sulphur treatment”
Claim · model-written summary
Yield gains became smaller above 20 kg/ ha sulphur.
- Taxon
- onionAllium cepat0
- Treatment
- sulphur levele0
- Outcome
- increase in bulb yielde0
- Direction
- lesse0
- Qualifier
- beyond 20 kg/ hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion”
e0“the increase in bulb yield and sulphur uptake was less with increasing the sulphur level beyond 20 kg/ ha”
Claim · model-written summary
Sulphur uptake gains became smaller above 20 kg/ ha.
- Taxon
- onionAllium cepat0
- Treatment
- sulphur levele0
- Outcome
- sulphur uptakee0
- Direction
- lesse0
- Qualifier
- beyond 20 kg/ hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion”
e0“the increase in bulb yield and sulphur uptake was less with increasing the sulphur level beyond 20 kg/ ha”
Claim · model-written summary
Pyruvic acid content correlated positively and significantly with sulphur application.
- Taxon
- onionAllium cepat0
- Treatment
- sulphur applicatione0
- Outcome
- pyruvic acid contente0
- Direction
- positive correlatione0
- Value
- r 2 =0.735**e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion”
e0“The pyruvic acid content had significant and positive correlation with sulphur application (r 2 =0.735**)”
Claim · model-written summary
Sulphur application did not significantly influence onion bulb storage life.
- Taxon
- onionAllium cepae0
- Treatment
- Sulphur applicatione0
- Outcome
- storage life of onion bulbse0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulphur application did not influence the storage life of onion bulbs significantly”
Claim · model-written summary
Sulphur application had no significant correlation with bulb storage losses.
- Taxon
- onionAllium cepae0
- Outcome
- total storage losses of onion bulbse0
- Direction
- no significant correlatione0
- Value
- r 2 = -0.0828e0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“showed no significant correlation with total storage losses of onion bulbs (r 2 = -0.0828)”
Claim · model-written summary
Soil sulphur after harvest increased from initial levels at 30, 40, and 50 kg S/ha.
- Taxon
- onionAllium cepat0
- Treatment
- application of sulphur @ 30, 40 and 50 kg S/hae0
- Outcome
- Soil sulphur level after harveste0
- Direction
- increasede0
- Comparator
- initial valuese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion”
e0“Soil sulphur level after harvest was increased over the initial values with application of sulphur @ 30, 40 and 50 kg S/ha”
Claim · model-written summary
Soil available sulphur decreased with 7.5 kg S/ha.
- Taxon
- onionAllium cepat0
- Treatment
- application of 7.5 kg S/hae0
- Outcome
- soil available sulphur contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion”
e0“application of 7.5 kg S/ha and control without sulphur reduced soil available sulphur content”
Claim · model-written summary
Soil available sulphur decreased in the no sulphur control.
- Taxon
- onionAllium cepat0
- Treatment
- control without sulphure0
- Outcome
- soil available sulphur contente0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion”
e0“control without sulphur reduced soil available sulphur content”
Claim · model-written summary
Excess sulphur did not significantly influence yield.
- Taxon
- onionAllium cepat0
- Treatment
- excess sulphur applicatione0
- Outcome
- yielde0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion”
e0“excess sulphur application did not influence the yield and pungency level significantly”
Claim · model-written summary
Excess sulphur did not significantly influence pungency.
- Taxon
- onionAllium cepat0
- Treatment
- excess sulphur applicatione0
- Outcome
- pungency levele0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion”
e0“excess sulphur application did not influence the yield and pungency level significantly”
Claim · model-written summary
The authors conclude sulphur nutrition is essential for onion yield and pungency in soils with sufficient sulphur.
- Taxon
- onionAllium cepae0
- Outcome
- increasing the onion yield and pungency levele0
- Qualifier
- soils having sufficient sulphure0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sulfur nutrition is essential for increasing the onion yield and pungency level in soils having sufficient sulphur”
Claim · model-written summary
The authors caution that low or high sulphur application harms soil health.
- Taxon
- onionAllium cepat0
- Treatment
- either low or higher sulphure0
- Outcome
- detrimental to soil healthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion”
e0“application of either low or higher sulphur is detrimental to soil health”
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See all 16 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.