Abstract
Two sets of on-farm trials, each covering two years, were conducted in the northern Guinea savannah of Nigeria over the period 1999–2001, the objective being to compare integrated Striga hermonthica control measures (soybean or cowpea trap crops followed by maize resistant to Striga ) with farmers' traditional cereal-based cropping systems. In both sets of trials, this proved to be highly effective in increasing productivity over the two year period, especially where soybean was used as a trap crop. Resistant maize after a trap crop increased the net benefit over the two cropping seasons in both trials by over 100% over farmer practice. However, in the second set of trials there was no significant increase in productivity between a trap crop followed by Striga resistant maize, and a trap crop followed by local maize especially where legume intercropping and fertilizer had been applied in the farmer practice. There was also no increase in productivity between two years' traditional cereal cropping and one year's local maize followed by Striga resistant maize. This indicates the importance of a legume trap crop in the first year in order to ensure high productivity in the second year, regardless of variety. Up to 20% of farmers obtained higher productivity from their own practices, notably intercropping of cereals with legumes and use of inorganic fertilizers. Leguminous trap crops and Striga resistant maize, together with two key management practices (increased soybean planting density and hand-roguing) were seen to be spreading both within and beyond the research villages, indicating that farmers see the economic benefits of controlling Striga . Survey findings show that explaining the reasons why control practices work can greatly increase the adoption of these practices. Wider adoption of Striga control will therefore require an extension approach that provides this training as well as encouraging farmers to experiment and adapt Striga control options for their local farming systems.
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Claims 8
Claim · model-written summary
Integrated trap cropping and resistant maize increased productivity, especially with soybean.
- Treatment
- soybean or cowpea trap crops followed by maize resistant to Strigae0
- Outcome
- productivitye0
- Direction
- increasinge0
- Comparator
- farmers' traditional cereal-based cropping systemse0
Zea mays
StrigaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean or cowpea trap crops followed by maize resistant to Striga ) with farmers' traditional cereal-based cropping systems. In both sets of trials, this proved to be highly effective in increasing productivity over the two year period, especially where soybean was used as a trap crop.”
Claim · model-written summary
Resistant maize after trap cropping increased net benefit by over 100% versus farmer practice.
- Treatment
- Resistant maize after a trap crope0
- Interactor
- STRIGA HERMONTHICA
Striga hermonthicat0parasite - Outcome
- net benefite0
- Direction
- increasede0
- Value
- over 100%e0
- Comparator
- farmer practicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Resistant maize after a trap crop increased the net benefit over the two cropping seasons in both trials by over 100% over farmer practice.”
t0“STRIGA HERMONTHICA”
Claim · model-written summary
In the second trial, resistant versus local maize after a trap crop had no significant productivity increase.
- Treatment
- a trap crop followed by Striga resistant maizee0
- Outcome
- productivitye0
- Direction
- no significant increasee0
- Comparator
- a trap crop followed by local maizee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the second set of trials there was no significant increase in productivity between a trap crop followed by Striga resistant maize, and a trap crop followed by local maize especially where legume intercropping and fertilizer had been applied in the farmer practice.”
Claim · model-written summary
Traditional cereal cropping versus local then resistant maize showed no productivity increase.
- Treatment
- one year's local maize followed by Striga resistant maizee0
- Outcome
- productivitye0
- Direction
- no increasee0
- Comparator
- two years' traditional cereal croppinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was also no increase in productivity between two years' traditional cereal cropping and one year's local maize followed by Striga resistant maize.”
Claim · model-written summary
Up to 20% of farmers achieved higher productivity through their practices.
Verbatim
e0“Up to 20% of farmers obtained higher productivity from their own practices, notably intercropping of cereals with legumes and use of inorganic fertilizers.”
Claim · model-written summary
Trap crops and resistant maize with management practices spread within and beyond research villages.
- Outcome
- spreading both within and beyond the research villagese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leguminous trap crops and Striga resistant maize, together with two key management practices (increased soybean planting density and hand-roguing) were seen to be spreading both within and beyond the research villages”
Claim · model-written summary
Explaining why control practices work can greatly increase their adoption.
- Taxon
- STRIGA HERMONTHICAStriga hermonthicat0
- Treatment
- explaining the reasons why control practices worke0
- Outcome
- adoption of these practicese0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Survey findings show that explaining the reasons why control practices work can greatly increase the adoption of these practices.”
t0“STRIGA HERMONTHICA CONTROL”
Claim · model-written summary
The authors recommend training and farmer experimentation for wider Striga control adoption.
- Outcome
- an extension approach that provides this training as well as encouraging farmers to experiment and adapt Striga control options for their local farming systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wider adoption of Striga control will therefore require an extension approach that provides this training as well as encouraging farmers to experiment and adapt Striga control options for their local farming systems.”
t0“one year's local maize followed by Striga resistant maize”
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