Paper · 2017 · International Journal of Tea Science

Evaluation of Shubhodoya Mycorrhizal Bio-fertilizer for Enhancing Rooting of Nursery Tea Plants.

Kibet Sitienei; Evelyne C. Cheramgoi; Methusela Rop; et al.

7
claims
14
verbatim quotes
1
citations
3
research areas
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Open access

Abstract

Bio-fertilizers have not been exploited in Kenya on tea production despite benefits demonstrated in many crops. The bio-fertilizers are organisms that enrich nutrient soil quality. Plants have beneficial relationships with such organisms. Shubhodoya mycorrhizal bio-fertilizer is a consortium of three different species of Glomus mycorrhizal fungus, produced in laboratory under sterile conditions. They are cultured and used for inoculating seed or soil or both under ideal conditions to increase availability of plant nutrients. A nursery experiment was conducted to evaluate the efficacy of Shubhodaya mycorrhizal bio-fertilizer (SMB) in enhancing growth of two tea clones, TRFK 306 and EPK TN14-3. Different rates of SMB (0.6g, 0.9g, and 1.2g), standard treatment (6g diammonium phosphate) and control (no fertilizer) were laid out in randomized complete block design. Sleeved seedlings with the soil were randomly sampled from the nursery for analysis of soil pH, assessment of growth parameters and mycorrhizal colonization were conducted. Root samples were used to determine dry weight and to conduct assays for VAM infection. The SMB did not have adverse effects on soil pH in the nursery. Plants subjected to the DAP treatment all died after weeks 27. Increasing application of SMB rates and frequency increased shoot growth. SMB at 1.2 g exhibited the lowest shoots dry weight while SMB at 0.6 and 0.9g had the highest. After 62 weeks from planting, there was an abrupt increase in shoot dry weight. Successful colonization of tea roots with inoculation of SMB was also observed. SMB colonized the tea roots an indication that it has potential for exploitation.

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Claims 7

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

SMB did not adversely affect nursery soil pH.

Taxon
Teat0
Treatment
SMBe0
Outcome
soil pHe0
Direction
did not have adverse effectse0

Not reportedComparator

Verbatim

e0

“The SMB did not have adverse effects on soil pH in the nursery.”

✓ located verbatim in the source · abstract, characters 1134–1197 · show in text ↑
t0

“Tea Plants”

✓ located verbatim in the source · title, characters 85–95 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

DAP-treated tea plants died after week 27.

Taxon
teat0
Treatment
DAP treatmente0
Outcome
Plants subjected to the DAP treatment all diede0

Not reportedComparatorDirection

Verbatim

e0

“Plants subjected to the DAP treatment all died after weeks 27.”

✓ located verbatim in the source · abstract, characters 1198–1260 · show in text ↑
t0

“Tea Plants”

✓ located verbatim in the source · title, characters 85–95 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher SMB rates and frequency increased shoot growth.

Taxon
teat0
Treatment
SMBe0
Outcome
shoot growthe0
Direction
increasede0

Not reportedComparator

Verbatim

e0

“Increasing application of SMB rates and frequency increased shoot growth.”

✓ located verbatim in the source · abstract, characters 1261–1334 · show in text ↑
t0

“Tea Plants”

✓ located verbatim in the source · title, characters 85–95 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

SMB at 1.2 g had the lowest shoot dry weight.

Taxon
teat0
Treatment
SMB at 1.2 ge0
Outcome
shoots dry weighte0
Direction
loweste0

Not reportedComparator

Verbatim

e0

“SMB at 1.2 g exhibited the lowest shoots dry weight while SMB at 0.6 and 0.9g had the highest.”

✓ located verbatim in the source · abstract, characters 1335–1429 · show in text ↑
t0

“Tea Plants”

✓ located verbatim in the source · title, characters 85–95 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

SMB at 0.6 and 0.9g had the highest shoot dry weight.

Taxon
teat0
Treatment
SMB at 0.6 and 0.9ge0
Outcome
shoots dry weighte0
Direction
higheste0

Not reportedComparator

Verbatim

e0

“SMB at 1.2 g exhibited the lowest shoots dry weight while SMB at 0.6 and 0.9g had the highest.”

✓ located verbatim in the source · abstract, characters 1335–1429 · show in text ↑
t0

“Tea Plants”

✓ located verbatim in the source · title, characters 85–95 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Shoot dry weight increased abruptly after 62 weeks.

Taxon
teat0
Outcome
shoot dry weighte0
Direction
increasee0

Not reportedTreatmentComparator

Verbatim

e0

“After 62 weeks from planting, there was an abrupt increase in shoot dry weight.”

✓ located verbatim in the source · abstract, characters 1430–1509 · show in text ↑
t0

“Tea Plants”

✓ located verbatim in the source · title, characters 85–95 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

SMB successfully colonized tea roots.

Taxon
teat0
Treatment
inoculation of SMBe0
Interactor
SMBe0symbiont
Outcome
colonization of tea rootse0

Not reportedComparatorDirection

Verbatim

e0

“Successful colonization of tea roots with inoculation of SMB was also observed.”

✓ located verbatim in the source · abstract, characters 1510–1589 · show in text ↑
t0

“Tea Plants”

✓ located verbatim in the source · title, characters 85–95 · show in text ↑

mycorrhiza · growth · Camellia sinensis (black tea)Results differ

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inoculation · soil: chemistry · Camellia sinensis (black tea)Positive and negative results

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inoculation · disease · Camellia sinensis (black tea)Positive and negative results

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inoculation · growth · Camellia sinensis (black tea)Positive and negative results

24 papers: 22 positive, 2 negative or no effect

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mycorrhiza · disease · Camellia sinensis (black tea)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

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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.