Abstract
Purpose: The alkaline nature of the Kuwait desert soil results in the disturbed of plant germination, absorption of water and fertilizers during growth, leading to an environment, where plants can hardly be grown. The local soil is alkaline with pH normally above 9.00. This is too high for many plant species. With the utilization of newly developed elemental sulfur and sulfur-oxidizing bacteria biofertilizer, it is hypothesized that soil is acidified enough to the extent of improving soil property and thus increasing nutrient availability and crop productivity. Methods: In house sulfur-oxidizing microbes were screened, enriched and isolated in Kuwait. The most promising strains were optimized through growth and nutrient modification. The production process for biofertilizer pellets utilizing byproduct sulfur and an inoculum of sulfur-oxidizing microbes were developed. The effectiveness of the pellets as soil enhancers was tested with Alfalfa plant in greenhouse and field conditions. Result: In general, increasing application rates of sulfur, lead significantly to pH decrease and Alfalfa dry matter production increase under greenhouse conditions. The highest application rate of 20 g S kg-1 has caused two unit reductions in the pH of the growth medium within 45 days. On the other hand, the field evaluation for the biofertilizer produced has slightly reduced soil pH compared to the greenhouse pH reduction. Conclusion: The use of the biological sulfur fertilizer has produced positive responses in terms of changing pH of the growth medium in greenhouse and field test as well as the growth responses by the test crop used in this investigation.
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Claims 4
Claim · model-written summary
Increasing sulfur application decreased pH under greenhouse conditions.
- Taxon
- Alfalfa
Medicago sativae0 - Treatment
- increasing application rates of sulfure0
- Outcome
- pHe0
- Direction
- decreasee0
- Setting
- greenhouse conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing application rates of sulfur, lead significantly to pH decrease and Alfalfa dry matter production increase under greenhouse conditions”
Claim · model-written summary
Increasing sulfur application increased Alfalfa dry matter production in the greenhouse.
- Taxon
- AlfalfaMedicago sativae0
- Treatment
- increasing application rates of sulfure0
- Outcome
- Alfalfa dry matter productione0
- Direction
- increasee0
- Setting
- greenhouse conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing application rates of sulfur, lead significantly to pH decrease and Alfalfa dry matter production increase under greenhouse conditions”
Claim · model-written summary
The highest sulfur rate reduced growth medium pH by two units within 45 days.
- Taxon
- AlfalfaMedicago sativae0
- Treatment
- 20 g S kg-1e1
- Outcome
- pH of the growth mediume1
- Direction
- reductionse1
- Value
- two unite1
- Qualifier
- within 45 dayse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alfalfa plant”
e1“The highest application rate of 20 g S kg-1 has caused two unit reductions in the pH of the growth medium within 45 days”
Claim · model-written summary
The fertilizer reduced field soil pH slightly relative to the greenhouse response.
- Taxon
- AlfalfaMedicago sativae0
- Treatment
- biofertilizere1
- Outcome
- soil pHe1
- Direction
- reducede1
- Comparator
- greenhouse pH reductione1
- Setting
- fielde1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alfalfa plant”
e1“the field evaluation for the biofertilizer produced has slightly reduced soil pH compared to the greenhouse pH reduction”
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See all 44 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.