Abstract
Potassium is one of the three essential elements viz., NPK needed in large quantities for the growth and reproduction of the plants and it plays many vital roles in plant nutrition. The crop production in Egypt relies completely on imports to meet its annual requirement of potash fertilizers besides; the high cost of conventional, water soluble K fertilizers constrain their use by most of the farmers in the country. In order to reduce the dependence on imported potash, feldspar a potash mineral, contains 10.5 % K2O and therefore it could be a potential K-source for crop production. Novel approaches are needed to unlock K from the silicate structure of this mineral in order to render K more available for plant nutrition. A strain of silicate dissolving bacteria (Bacillus circulans) as well as fungus (Penicillium sp.) were used as bio-inoculants. These studies were undertaken to evaluate the effectiveness of bacterial and fungus inoculation in combination with two levels of feldspar and mineral potassium fertilizer (full recommended dose and half recommended dose) on K-releasing capacity as well as potato yield. To achieve this target, bio-inoculated potato tubers (Solanum tuberosum, L.) were sown on calcareous soil at Nubaria Agriculture Research Station. The obtained data showed that inoculation with silicate dissolving bacteria as biofertilizer in the presence of different potassium sources increased all examined potato tuber yield, tuber content of carbohydrate and protein, moreover soil available and plant (shoot and tubers) content of N, P , K ,Fe, Mn, Zn and Cu compared to the sole use of K sources. On the other hand, the highest tubers yield ( 15.62 and 15.33 ton fed.-1) were obtained when mineral fertilizer and feldspar were inoculated with bacteria. The apparent nutrient recovery and partial factor productivity were significantly enhanced by inoculated feldspar with Silicate Dissolving Bacteria (SDB) than other treatments. However, the use of feldspar in combination with biofertilizers may be more useful and economically.
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Claims 9
Claim · model-written summary
Bacterial inoculation with potassium sources increased potato tuber yield compared with potassium sources alone.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- inoculation with silicate dissolving bacteriae0
- Interactor
- Bacillus circulanse1symbiont
- Outcome
- potato tuber yielde0
- Direction
- increasede0
- Comparator
- sole use of K sourcese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation with silicate dissolving bacteria as biofertilizer in the presence of different potassium sources increased all examined potato tuber yield, tuber content of carbohydrate and protein, moreover soil available and plant (shoot and tubers) content of N, P , K ,Fe, Mn, Zn and Cu compared to the sole use of K sources.”
e1“A strain of silicate dissolving bacteria (Bacillus circulans)”
Claim · model-written summary
Bacterial inoculation increased potato tuber carbohydrate and protein content compared with potassium sources alone.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- inoculation with silicate dissolving bacteriae0
- Interactor
- Bacillus circulanse1symbiont
- Outcome
- tuber content of carbohydrate and proteine0
- Direction
- increasede0
- Comparator
- sole use of K sourcese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation with silicate dissolving bacteria as biofertilizer in the presence of different potassium sources increased all examined potato tuber yield, tuber content of carbohydrate and protein, moreover soil available and plant (shoot and tubers) content of N, P , K ,Fe, Mn, Zn and Cu compared to the sole use of K sources.”
e1“A strain of silicate dissolving bacteria (Bacillus circulans)”
Claim · model-written summary
Bacterial inoculation increased soil available N, P, K, Fe, Mn, Zn, and Cu compared with potassium sources alone.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- inoculation with silicate dissolving bacteriae0
- Interactor
- Bacillus circulanse1symbiont
- Outcome
- soil availablee0
- Direction
- increasede0
- Comparator
- sole use of K sourcese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation with silicate dissolving bacteria as biofertilizer in the presence of different potassium sources increased all examined potato tuber yield, tuber content of carbohydrate and protein, moreover soil available and plant (shoot and tubers) content of N, P , K ,Fe, Mn, Zn and Cu compared to the sole use of K sources.”
e1“A strain of silicate dissolving bacteria (Bacillus circulans)”
Claim · model-written summary
Bacterial inoculation increased potato shoot and tuber N, P, K, Fe, Mn, Zn, and Cu content compared with potassium sources alone.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- inoculation with silicate dissolving bacteriae0
- Interactor
- Bacillus circulanse1symbiont
- Outcome
- plant (shoot and tubers) content of N, P , K ,Fe, Mn, Zn and Cue0
- Direction
- increasede0
- Comparator
- sole use of K sourcese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation with silicate dissolving bacteria as biofertilizer in the presence of different potassium sources increased all examined potato tuber yield, tuber content of carbohydrate and protein, moreover soil available and plant (shoot and tubers) content of N, P , K ,Fe, Mn, Zn and Cu compared to the sole use of K sources.”
e1“A strain of silicate dissolving bacteria (Bacillus circulans)”
Claim · model-written summary
Inoculated mineral fertilizer produced a highest potato tuber yield of 15.62 ton fed.-1.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- mineral fertilizere0
- Interactor
- Bacillus circulanse2symbiont
- Outcome
- tubers yielde0
- Direction
- higheste0
- Value
- 15.62e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest tubers yield ( 15.62 and 15.33 ton fed.-1) were obtained when mineral fertilizer and feldspar were inoculated with bacteria.”
e1“potato tubers (Solanum tuberosum, L.)”
e2“A strain of silicate dissolving bacteria (Bacillus circulans)”
Claim · model-written summary
Inoculated feldspar produced a highest potato tuber yield of 15.33 ton fed.-1.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- feldspare0
- Interactor
- Bacillus circulanse2symbiont
- Outcome
- tubers yielde0
- Direction
- higheste0
- Value
- 15.33 ton fed.-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest tubers yield ( 15.62 and 15.33 ton fed.-1) were obtained when mineral fertilizer and feldspar were inoculated with bacteria.”
e1“potato tubers (Solanum tuberosum, L.)”
e2“A strain of silicate dissolving bacteria (Bacillus circulans)”
Claim · model-written summary
Inoculated feldspar significantly enhanced apparent nutrient recovery relative to other treatments.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- inoculated feldspar with Silicate Dissolving Bacteria (SDB)e0
- Interactor
- Silicate Dissolving Bacteria (SDB)e0symbiont
- Outcome
- apparent nutrient recoverye0
- Direction
- enhancede0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The apparent nutrient recovery and partial factor productivity were significantly enhanced by inoculated feldspar with Silicate Dissolving Bacteria (SDB) than other treatments.”
e1“potato tubers (Solanum tuberosum, L.)”
Claim · model-written summary
Inoculated feldspar significantly enhanced partial factor productivity relative to other treatments.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- inoculated feldspar with Silicate Dissolving Bacteria (SDB)e0
- Interactor
- Silicate Dissolving Bacteria (SDB)e0symbiont
- Outcome
- partial factor productivitye0
- Direction
- enhancede0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The apparent nutrient recovery and partial factor productivity were significantly enhanced by inoculated feldspar with Silicate Dissolving Bacteria (SDB) than other treatments.”
e1“potato tubers (Solanum tuberosum, L.)”
Claim · model-written summary
The authors considered feldspar with biofertilizers potentially more useful and economical.
- Taxon
- potatoSolanum tuberosume1
- Outcome
- use of feldspar in combination with biofertilizerse0
- Qualifier
- may be more useful and economicallye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the use of feldspar in combination with biofertilizers may be more useful and economically.”
e1“potato tubers (Solanum tuberosum, L.)”
The same questions in other papers
silicate(4-) · quality: protein · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
silicate(4-) · molecular: metabolites · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
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feldspar · nutrient: content · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
silicate(4-) · nutrient: content · Solanum tuberosum (potato)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
feldspar · yield · Solanum tuberosum (potato)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
silicate(4-) · yield · Solanum tuberosum (potato)Results agree
6 papers in the same direction as this paper
- positive
- positive
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See all 7 papers →inoculation · molecular: metabolites · Solanum tuberosum (potato)Positive and negative results
15 papers in the same direction as this paper · 2 in the opposite direction
- negative
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See all 18 papers →inoculation · nutrient: content · Solanum tuberosum (potato)Positive and negative results
29 papers in the same direction as this paper · 2 in the opposite direction
- positive
- no effect
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See all 32 papers →8 of 11 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.