Abstract
Root-knot nematodes cause hypertrophy and hyperplasia of the vascular and cortical root tissues that reduce the absorption and transport of nutrients and water from soil. Aboveground symptoms are mistaken as nutrient deficiencies. The farmers tend to apply higher doses of fertilizers than necessary for a nematode-free crop, that not only causes economic loss but also avoidable soil and groundwater pollution. The nitrogen (N), phosphorus (P), potassium (K), iron (Fe) and zinc (Zn) contents were determined in the rhizosphere soil and leaves of a non-basmati Pusa-44 and a basmati Pusa Sugandh-5 cultivars of rice grown in soil infested with varying levels of Meloidogyne graminicola under pot and field conditions. The N, P, K, Fe and Zn contents in the rice leaves were significantly reduced in both the rice cultivars infestated with M. graminicola under both pot and field conditions. The degree of reduction did not significantly differ in the two cultivars. Pusa Sugandh-5 had relatively greater biomass than Pusa-44, but both the cultivars appeared to be similarly susceptible to M. graminicola. The residual contents of N, P, K, Fe and Zn in soil were more with increasing nematode population. Thus, the nutrients remained unutilized in the soil while the plant suffered severe nutrient deficiencies and growth reduction in the presence of nematode infestation.
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Claims 7
Claim · model-written summary
N, P and K contents in rice leaves were significantly reduced in both cultivars infested with M. graminicola in pot and field.
- Taxon
- rice
Oryza sativae0 - Organ / stage
- leavese0
- Treatment
- infestated with M. graminicolae0
- Interactor
- M. graminicolaMeloidogyne graminicolae0pest
- Outcome
- N, P, Ke0
- Direction
- reducede0
- Setting
- pot and field conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The N, P, K, Fe and Zn contents in the rice leaves were significantly reduced in both the rice cultivars infestated with M. graminicola under both pot and field conditions”
Claim · model-written summary
Fe and Zn contents in rice leaves were significantly reduced in both cultivars infested with M. graminicola in pot and field.
- Taxon
- riceOryza sativae0
- Organ / stage
- leavese0
- Treatment
- infestated with M. graminicolae0
- Interactor
- M. graminicolaMeloidogyne graminicolae0pest
- Outcome
- Fe and Zn contentse0
- Direction
- reducede0
- Setting
- pot and field conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The N, P, K, Fe and Zn contents in the rice leaves were significantly reduced in both the rice cultivars infestated with M. graminicola under both pot and field conditions”
Claim · model-written summary
The degree of nutrient reduction did not significantly differ between the two rice cultivars.
- Taxon
- riceOryza sativat0
- Material
- the two cultivarse0
- Outcome
- degree of reductione0
- Direction
- did not significantly differe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The degree of reduction did not significantly differ in the two cultivars”
t0“rice plant”
Claim · model-written summary
Pusa Sugandh-5 had relatively greater biomass than Pusa-44.
- Taxon
- riceOryza sativat0
- Material
- Pusa Sugandh-5e0
- Outcome
- biomasse0
- Direction
- greatere0
- Comparator
- Pusa-44e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pusa Sugandh-5 had relatively greater biomass than Pusa-44”
t0“rice plant”
Claim · model-written summary
Both rice cultivars appeared similarly susceptible to M. graminicola.
- Taxon
- riceOryza sativat0
- Interactor
- M. graminicolaMeloidogyne graminicolae0pest
- Outcome
- similarly susceptiblee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both the cultivars appeared to be similarly susceptible to M. graminicola”
t0“rice plant”
Claim · model-written summary
Residual N, P, K, Fe and Zn contents in soil were higher with increasing nematode population.
- Taxon
- riceOryza sativat0
- Outcome
- residual contents of N, P, K, Fe and Zn in soile0
- Direction
- moree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The residual contents of N, P, K, Fe and Zn in soil were more with increasing nematode population”
t0“rice plant”
Claim · model-written summary
Nematode infestation was accompanied by severe nutrient deficiencies and growth reduction in the rice plant.
- Taxon
- riceOryza sativat0
- Treatment
- nematode infestatione0
- Outcome
- severe nutrient deficiencies and growth reductione0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the plant suffered severe nutrient deficiencies and growth reduction in the presence of nematode infestation”
t0“rice plant”
The same questions in other papers
Meloidogyne graminicola · nutrient: content · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- negative
infection · nutrient: content · Oryza sativa (rice)Positive and negative results
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- positive
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See all 19 papers →infection · Nematoda · Oryza sativa (rice)Results agree
3 papers in the same direction as this paper
- negative
- negative
- negative
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.