Abstract
Two series of experiments were employed in evaluating integrated pest management for the control of root knot nematodes in tea. The first series involved evaluation of several control options involving intercropping tea with marigolds (Tagetes minuta), and the use of a nematicide Furadan® 5G and potash fertilizer. The severity of knotting was reduced in treatments with Furadan® 5G, T. minuta and potash by 28.7, 24.3 and 44%, respectively, over the 2-year study period. The T. minuta intercrop, however, retarded tea development. The second series of experiments involved screening for host plant resistance using 8, 24 and 25 cultivars at each of three different sites. The cultivars displayed significant variation in resistance to root knot nematode infection; several were resistant, a few moderately tolerant, while others were susceptible. Generally, progenies of susceptible and resistant cultivars exhibited similar phenotypes to their progenitors, indicating apparent susceptibility and resistance, to be highly heritable traits. The study demonstrated that the use of nematode-resistant cultivars is clearly the most practicable, environmentally friendly and cost-effective option for controlling nematodes in tea, although augmenting host-plant resistance with potash fertilizer could give better results.
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Claims 8
Claim · model-written summary
Furadan 5G reduced tea root knot severity by 28.7%.
- Taxon
- teat0
- Treatment
- Furadan® 5Ge0
- Interactor
- root knot nematode
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogynet0pathogen - Outcome
- severity of knottinge0
- Direction
- reducede0
- Value
- 28.7e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
t0“root knot nematode (Meloidogynespp.) in tea (Camellia sinensis)”
e0“The severity of knotting was reduced in treatments with Furadan® 5G, T. minuta and potash by 28.7, 24.3 and 44%, respectively, over the 2-year study period.”
Claim · model-written summary
Marigold intercropping reduced tea root knot severity by 24.3%.
- Taxon
- teat0
- Treatment
- T. minutae0
- Interactor
- root knot nematodeMeloidogynet0pathogen
- Outcome
- severity of knottinge0
- Direction
- reducede0
- Value
- 24.3e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“root knot nematode (Meloidogynespp.) in tea (Camellia sinensis)”
e0“The severity of knotting was reduced in treatments with Furadan® 5G, T. minuta and potash by 28.7, 24.3 and 44%, respectively, over the 2-year study period.”
Claim · model-written summary
Potash reduced tea root knot severity by 44%.
- Taxon
- teat0
- Treatment
- potashe0
- Interactor
- root knot nematodeMeloidogynet0pathogen
- Outcome
- severity of knottinge0
- Direction
- reducede0
- Value
- 44%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“root knot nematode (Meloidogynespp.) in tea (Camellia sinensis)”
e0“The severity of knotting was reduced in treatments with Furadan® 5G, T. minuta and potash by 28.7, 24.3 and 44%, respectively, over the 2-year study period.”
Claim · model-written summary
Marigold intercropping retarded tea development.
Not reportedComparator
Verbatim
t0“tea (Camellia sinensis)”
e0“The T. minuta intercrop, however, retarded tea development.”
Claim · model-written summary
Tea cultivars varied significantly in resistance to root knot nematode infection.
- Taxon
- teat0
- Material
- cultivarse0
- Interactor
- root knot nematodeMeloidogynee0pathogen
- Outcome
- resistance to root knot nematode infectione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“root knot nematode (Meloidogynespp.) in tea (Camellia sinensis)”
e0“The cultivars displayed significant variation in resistance to root knot nematode infection; several were resistant, a few moderately tolerant, while others were susceptible.”
Claim · model-written summary
Progeny of resistant and susceptible tea cultivars generally resembled their progenitors in nematode resistance phenotype, indicating high heritability.
- Taxon
- teat0
- Material
- progenies of susceptible and resistant cultivarse0
- Outcome
- similar phenotypese0
- Comparator
- their progenitorse0
Not reportedDirection
Verbatim
t0“tea (Camellia sinensis)”
e0“Generally, progenies of susceptible and resistant cultivars exhibited similar phenotypes to their progenitors, indicating apparent susceptibility and resistance, to be highly heritable traits.”
Claim · model-written summary
The authors identify nematode-resistant tea cultivars as the most practicable, environmentally friendly and cost-effective control option.
Verbatim
t0“tea (Camellia sinensis)”
e0“the use of nematode-resistant cultivars is clearly the most practicable, environmentally friendly and cost-effective option for controlling nematodes in tea”
Claim · model-written summary
The authors suggest augmenting tea host resistance with potash fertilizer for better nematode control.
Verbatim
t0“tea (Camellia sinensis)”
e0“augmenting host-plant resistance with potash fertilizer could give better results”
The same questions in other papers
intercropping · growth · Camellia sinensis (black tea)Positive and negative results
5 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 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.