Abstract
In greenhouse studies the effects of N fertilizer on growth of sorghum and S. hermonthica were investigated in relation to parasitism. N application increased growth of both infected and non-infected sorghum plants. Application of either complete nutrient or ammonium sulphate solutions to sorghum plants with split-root systems resulted in an increase in growth of the root system which received high concn of the fertilizers compared with the other half which received only water. Shoot weight increased whether fertilizer was added to one half of the root system or shared between the 2 halves, with or without infection. The number of Striga plants emerging/pot decreased with increasing rate of fertilizer, especially with early application. Measurements of the plant growth promoting substances as GA or kinetin equivalents in the xylem exudates of sorghum revealed that infection with S. hermonthica greatly decreased the concn of both growth substances but N application increased their concn whether the plant was infected or non-infected with S. hermonthica. It was concluded that N fertilizers are useful for controlling S. hermonthica
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Claims 9
Claim · model-written summary
Nitrogen application increased growth of infected and non-infected sorghum.
- Taxon
- Sorghum vulgare
Sorghum bicolort0 - Treatment
- N applicatione0
- Outcome
- growthe0
- Direction
- increasede0
- Qualifier
- infected and non-infectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum vulgare”
e0“N application increased growth of both infected and non-infected sorghum plants.”
Claim · model-written summary
Complete nutrient solution increased growth of the fertilized root half relative to the water-treated half.
- Taxon
- Sorghum vulgareSorghum bicolort0
- Treatment
- complete nutriente0
- Outcome
- growth of the root systeme0
- Direction
- increasee0
- Comparator
- the other half which received only watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum vulgare”
e0“Application of either complete nutrient or ammonium sulphate solutions to sorghum plants with split-root systems resulted in an increase in growth of the root system which received high concn of the fertilizers compared with the other half which received only water.”
Claim · model-written summary
Ammonium sulphate solution increased growth of the fertilized root half relative to the water-treated half.
- Taxon
- Sorghum vulgareSorghum bicolort0
- Treatment
- ammonium sulphate solutionse0
- Outcome
- growth of the root systeme0
- Direction
- increasee0
- Comparator
- the other half which received only watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum vulgare”
e0“Application of either complete nutrient or ammonium sulphate solutions to sorghum plants with split-root systems resulted in an increase in growth of the root system which received high concn of the fertilizers compared with the other half which received only water.”
Claim · model-written summary
Fertilizer increased sorghum shoot weight whether applied to one root half or shared between both halves, with or without infection.
- Taxon
- Sorghum vulgareSorghum bicolort0
- Treatment
- fertilizere0
- Outcome
- Shoot weighte0
- Direction
- increasede0
- Qualifier
- with or without infectione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum vulgare”
e0“Shoot weight increased whether fertilizer was added to one half of the root system or shared between the 2 halves, with or without infection.”
Claim · model-written summary
Increasing fertilizer rate decreased the number of emerging Striga plants per pot, especially with early application.
- Taxon
- Sorghum vulgareSorghum bicolort0
- Treatment
- increasing rate of fertilizere0
- Outcome
- number of Striga plants emerging/pote0
- Direction
- decreasede0
- Qualifier
- especially with early applicatione0
StrigaNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum vulgare”
e0“The number of Striga plants emerging/pot decreased with increasing rate of fertilizer, especially with early application.”
Claim · model-written summary
Striga infection decreased GA equivalents in sorghum xylem exudates.
- Taxon
- Sorghum vulgareSorghum bicolort0
- Organ / stage
- xylem exudatese0
- Treatment
- infection with S. hermonthicae0
- Interactor
- S. hermonthica
Striga hermonthicae0parasite - Outcome
- GAe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum vulgare”
e0“Measurements of the plant growth promoting substances as GA or kinetin equivalents in the xylem exudates of sorghum revealed that infection with S. hermonthica greatly decreased the concn of both growth substances”
Claim · model-written summary
Striga infection decreased kinetin equivalents in sorghum xylem exudates.
- Taxon
- Sorghum vulgareSorghum bicolort0
- Organ / stage
- xylem exudatese0
- Treatment
- infection with S. hermonthicae0
- Interactor
- S. hermonthicaStriga hermonthicae0parasite
- Outcome
- kinetin equivalentse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum vulgare”
e0“Measurements of the plant growth promoting substances as GA or kinetin equivalents in the xylem exudates of sorghum revealed that infection with S. hermonthica greatly decreased the concn of both growth substances”
Claim · model-written summary
Nitrogen application increased both growth substance concentrations regardless of infection status.
- Taxon
- Sorghum vulgareSorghum bicolort0
- Treatment
- N applicatione0
- Interactor
- S. hermonthicaStriga hermonthicae0parasite
- Outcome
- their concne0
- Direction
- increasede0
- Qualifier
- whether the plant was infected or non-infected with S. hermonthicae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum vulgare”
e0“N application increased their concn whether the plant was infected or non-infected with S. hermonthica.”
Claim · model-written summary
The authors conclude nitrogen fertilizers are useful for controlling S. hermonthica.
- Taxon
- Sorghum vulgareSorghum bicolort0
- Interactor
- S. hermonthicaStriga hermonthicae0parasite
- Outcome
- N fertilizers are useful for controlling S. hermonthicae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum vulgare”
e0“It was concluded that N fertilizers are useful for controlling S. hermonthica”
The same questions in other papers
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37 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
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37 papers more in this group
See all 41 papers →nitrogen · Striga hermonthica · Sorghum bicolor (sorghum)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.