Abstract
To evaluate the effects of leaf mulches from three leguminous trees and genotypes, fifteen sorghum accessions were studied in plots inoculated with seeds of root parasite Striga hermonthica during wet 2006 at Moutourwa (northern Cameroon). The same genetic material was screened in pots trials during the 2007 cropping season in Ngaoundere to assess their varietal response to Striga infestation. In pots and in field, results showed that soghum cultivars differed significantly with respect to number of emerged Striga plants. Under high and uniform infestation, three promising varieties namely S35, CS54 and Defe Gala constantly recorded low number of parasite plants and low host damage score. Mature plant resistance was also expressed by delay of parasite emergence and inhibition of its development, low reduction in sorghum growth and production (dry matter and grain yield) in comparison with susceptible varieties. Globally, in pot trials, Striga infestation reduced sorghum height, panicle weight and grain yield by 36.6%, 33.7% and 56.5% respectively in comparison with uninfected control. Application of leaf mulches from leguminous trees decreased Striga emergence (31.5% at maturity), and host damage (20.47%), and in contrast, increased sorghum height (22.36%), dry matter accumulation (25.15%) and grain yield (23.25%). Fertilization of resistant sorghum genotypes further reduced Striga emergence and partially mitigated its effects on sorghum yield. Adoption of an integrated approach encompassing high yielding Striga resistant and/or tolerant varieties combined with use of organic fertilization may provide a cheap and easy to apply method for Striga control under low-input farming systems.
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Claims 14
Claim · model-written summary
Sorghum cultivars differed significantly in emerged Striga numbers.
- Outcome
- number of emerged Striga plantse0
Sorghum
StrigaNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soghum cultivars differed significantly with respect to number of emerged Striga plants.”
t0“Sorghum”
Claim · model-written summary
S35, CS54 and Defe Gala had low parasite counts and host damage.
- Material
- S35, CS54 and Defe Galae0
- Outcome
- low number of parasite plants and low host damage scoree0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S35, CS54 and Defe Gala constantly recorded low number of parasite plants and low host damage score.”
t0“Sorghum”
t1“Sorghum”
e1“soghum cultivars differed significantly with respect to number of emerged Striga plants.”
Claim · model-written summary
Mature plant resistance delayed parasite emergence and inhibited development.
- Outcome
- delay of parasite emergence and inhibition of its developmente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mature plant resistance was also expressed by delay of parasite emergence and inhibition of its development”
t0“Sorghum”
t1“Sorghum”
e1“soghum cultivars differed significantly with respect to number of emerged Striga plants.”
Claim · model-written summary
Striga infestation reduced sorghum height by 36.6%.
- Treatment
- Striga infestatione0
- Outcome
- heighte0
- Direction
- reducede0
- Value
- 36.6%e0
- Comparator
- uninfected controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Striga infestation reduced sorghum height, panicle weight and grain yield by 36.6%, 33.7% and 56.5% respectively in comparison with uninfected control.”
t0“Sorghum”
t1“Sorghum”
Claim · model-written summary
Striga infestation reduced sorghum panicle weight by 33.7%.
- Treatment
- Striga infestatione0
- Outcome
- panicle weighte0
- Direction
- reducede0
- Value
- 33.7%e0
- Comparator
- uninfected controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Striga infestation reduced sorghum height, panicle weight and grain yield by 36.6%, 33.7% and 56.5% respectively in comparison with uninfected control.”
t0“Sorghum”
t1“Sorghum”
Claim · model-written summary
Striga infestation reduced sorghum grain yield by 56.5%.
- Treatment
- Striga infestatione0
- Outcome
- grain yielde0
- Direction
- reducede0
- Value
- 56.5%e0
- Comparator
- uninfected controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Striga infestation reduced sorghum height, panicle weight and grain yield by 36.6%, 33.7% and 56.5% respectively in comparison with uninfected control.”
t0“Sorghum”
t1“Sorghum”
Claim · model-written summary
Leaf mulches decreased Striga emergence by 31.5%.
- Treatment
- leaf mulches from leguminous treese0
- Outcome
- Striga emergencee0
- Direction
- decreasede0
- Value
- 31.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of leaf mulches from leguminous trees decreased Striga emergence (31.5% at maturity), and host damage (20.47%), and in contrast, increased sorghum height (22.36%), dry matter accumulation (25.15%) and grain yield (23.25%).”
t0“Sorghum”
t1“Sorghum”
Claim · model-written summary
Leaf mulches decreased host damage by 20.47%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of leaf mulches from leguminous trees decreased Striga emergence (31.5% at maturity), and host damage (20.47%), and in contrast, increased sorghum height (22.36%), dry matter accumulation (25.15%) and grain yield (23.25%).”
t0“Sorghum”
t1“Sorghum”
Claim · model-written summary
Leaf mulches increased sorghum height by 22.36%.
- Treatment
- leaf mulches from leguminous treese0
- Outcome
- sorghum heighte0
- Direction
- increasede0
- Value
- 22.36%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of leaf mulches from leguminous trees decreased Striga emergence (31.5% at maturity), and host damage (20.47%), and in contrast, increased sorghum height (22.36%), dry matter accumulation (25.15%) and grain yield (23.25%).”
t0“Sorghum”
t1“Sorghum”
Claim · model-written summary
Leaf mulches increased dry matter accumulation by 25.15%.
- Treatment
- leaf mulches from leguminous treese0
- Outcome
- dry matter accumulatione0
- Direction
- increasede0
- Value
- 25.15%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of leaf mulches from leguminous trees decreased Striga emergence (31.5% at maturity), and host damage (20.47%), and in contrast, increased sorghum height (22.36%), dry matter accumulation (25.15%) and grain yield (23.25%).”
t0“Sorghum”
t1“Sorghum”
Claim · model-written summary
Leaf mulches increased grain yield by 23.25%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of leaf mulches from leguminous trees decreased Striga emergence (31.5% at maturity), and host damage (20.47%), and in contrast, increased sorghum height (22.36%), dry matter accumulation (25.15%) and grain yield (23.25%).”
t0“Sorghum”
t1“Sorghum”
Claim · model-written summary
Fertilization of resistant genotypes further reduced Striga emergence.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization of resistant sorghum genotypes further reduced Striga emergence and partially mitigated its effects on sorghum yield.”
t0“Sorghum”
t1“Sorghum”
Claim · model-written summary
Fertilization partly mitigated Striga effects on yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization of resistant sorghum genotypes further reduced Striga emergence and partially mitigated its effects on sorghum yield.”
t0“Sorghum”
t1“Sorghum”
Claim · model-written summary
Authors recommend resistant or tolerant varieties with organic fertilization for Striga control.
- Outcome
- Striga controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adoption of an integrated approach encompassing high yielding Striga resistant and/or tolerant varieties combined with use of organic fertilization may provide a cheap and easy to apply method for Striga control under low-input farming systems.”
t0“Sorghum”
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