Abstract
Striga is a major constraint to cereal production in the tropics, particularly on soils of low fertility. Striga causes 30 to 80% cereal crop losses in sub-Saharan Africa. The objective of this study was to assess farmers’ perception of level of infestation and efficacy of current management options of Striga (Striga hermonthica (Delile) Benth) in maize-based cropping systems in eastern Uganda. A survey was conducted in Iganga district in eastern Uganda, involving 360 households. On the basis of the survey outputs, on-farm trials were conducted to assess the efficacy of a herbicide seed-coating technology, imazapyr herbicide resistant maize (IR-maize) variety, either as a sole crop or intercropped with soybean (Glycine max) or common beans (Phaseolus vulgaris L). The study revealed that S. hermonthica caused more than 50% maize (Zea mays) yield loss and farmers were dissatisfied with the existing control practices. Farmers’ knowledge about Striga was mainly sourced from agricultural extension service providers. The on-farm trials revealed that IR-maize provided effective protection against S. hermonthica infestation. Also, intercropping Longe 6H maize variety with either soybean or common beans significantly reduced Striga infestation in farmers’ fields. Longe 6H-soybean intercropping reduced Striga infestation by 32%; while Longe 6H-common bean intercropping reduced Striga infestation by 14%. Intercropping either IR-maize or Longe 6H hybrid (farmer-preferred) with the aforementioned legumes, reduced S. hermonthica infestation (30–50%) and improved maize yield parameters (20-30%). For effective management of S. hermonthica in the maize-based cropping systems in eastern Uganda, farmers should be encouraged to adopt the improved IR-maize and intercrop farmer-preferred maize varieties with legumes in order to improve maize yields.
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Claims 9
Claim · model-written summary
Striga caused more than 50% maize yield loss.
- Interactor
- S. hermonthica
Striga hermonthicae0weed - Outcome
- maize (Zea mays) yield losse0
- Value
- more than 50%e0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S. hermonthica caused more than 50% maize (Zea mays) yield loss”
e1“Striga (Striga hermonthica (Delile) Benth)”
Claim · model-written summary
Farmers were dissatisfied with existing Striga control practices.
- Interactor
- S. hermonthicaStriga hermonthicae1weed
- Outcome
- dissatisfied with the existing control practicese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“farmers were dissatisfied with the existing control practices”
e1“S. hermonthica caused more than 50% maize (Zea mays) yield loss”
Claim · model-written summary
Farmers mainly learned about Striga through agricultural extension providers.
- Outcome
- knowledge about Strigae0
StrigaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Farmers’ knowledge about Striga was mainly sourced from agricultural extension service providers”
e1“in maize-based cropping systems in eastern Uganda. A survey”
Claim · model-written summary
IR-maize protected against S. hermonthica infestation in on-farm trials.
- Material
- IR-maizee0
- Treatment
- IR-maizee0
- Interactor
- S. hermonthicaStriga hermonthicae0weed
- Outcome
- S. hermonthica infestatione0
- Direction
- effective protectione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“IR-maize provided effective protection against S. hermonthica infestation”
e1“maize (Zea mays) yield loss”
Claim · model-written summary
Longe 6H maize intercropped with soybean significantly reduced Striga infestation by 32%.
- Material
- Longe 6He0
- Treatment
- Longe 6H-soybean intercroppinge0
- Second interactor
- soybean
Glycine maxe0other - Outcome
- Striga infestatione0
- Direction
- reducede0
- Value
- 32%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Longe 6H-soybean intercropping reduced Striga infestation by 32%”
e1“intercropping Longe 6H maize variety with either soybean or common beans significantly reduced Striga infestation in farmers’ fields”
Claim · model-written summary
Longe 6H maize intercropped with common bean reduced Striga infestation by 14%.
- Material
- Longe 6He0
- Treatment
- Longe 6H-common bean intercroppinge0
- Second interactor
- common bean
Phaseolus vulgarise0other - Outcome
- Striga infestatione0
- Direction
- reducede0
- Value
- 14%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Longe 6H-common bean intercropping reduced Striga infestation by 14%”
e1“intercropping Longe 6H maize variety with either soybean or common beans significantly reduced Striga infestation in farmers’ fields”
Claim · model-written summary
Legume intercropping with either IR-maize or Longe 6H reduced S. hermonthica infestation by 30–50%.
- Treatment
- Intercropping either IR-maize or Longe 6H hybrid (farmer-preferred) with the aforementioned legumese0
- Interactor
- S. hermonthicaStriga hermonthicae0weed
- Outcome
- S. hermonthica infestatione0
- Direction
- reducede0
- Value
- 30–50%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping either IR-maize or Longe 6H hybrid (farmer-preferred) with the aforementioned legumes, reduced S. hermonthica infestation (30–50%) and improved maize yield parameters (20-30%)”
e1“maize (Zea mays) yield loss”
Claim · model-written summary
Legume intercropping with either IR-maize or Longe 6H improved maize yield parameters by 20-30%.
- Treatment
- Intercropping either IR-maize or Longe 6H hybrid (farmer-preferred) with the aforementioned legumese0
- Interactor
- S. hermonthicaStriga hermonthicae0weed
- Outcome
- maize yield parameterse0
- Direction
- improvede0
- Value
- 20-30%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping either IR-maize or Longe 6H hybrid (farmer-preferred) with the aforementioned legumes, reduced S. hermonthica infestation (30–50%) and improved maize yield parameters (20-30%)”
Claim · model-written summary
The authors recommend IR-maize and legume intercropping for Striga management and maize yield improvement.
- Interactor
- S. hermonthicaStriga hermonthicae1weed
- Outcome
- adopt the improved IR-maize and intercrop farmer-preferred maize varieties with legumese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“farmers should be encouraged to adopt the improved IR-maize and intercrop farmer-preferred maize varieties with legumes in order to improve maize yields”
e1“management of S. hermonthica in the maize-based cropping systems in eastern Uganda”
The same questions in other papers
Phaseolus vulgaris · Striga · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- positive
Glycine max · Striga · Zea mays (maize)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →intercropping · Striga · Zea mays (maize)Positive and negative results
4 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- positive
3 papers more in this group
See all 7 papers →intercropping · Striga hermonthica · Zea mays (maize)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.