Abstract
SUMMARY Prior on-station research showed that sowing dates, sowing density and applications of fungicide and phosphorus (P) increased groundnut ( Arachis hypogaea ) pod yield by 60–80%. Farmer-managed trials were conducted in the Wa district of the Upper West Region of Ghana from 2004 to 2007 to test the yield response to sowing density, fungicide and P and to assess economic returns of these technologies to farmers. Treatments included: an early maturing groundnut cultivar, Chinese, sown at farmers' density (5–8 plant m −2 ) without fungicide and without P application (T1, control), with fungicide sprays alone (T2), or with fungicide and P application (T3), cultivar Chinese sown at recommended (higher) density (20 plant m −2 ) with fungicide and P application (T4), and a full season cultivar, Manipinter, with fungicide and P application (T5). Soil fertility, sowing density, days from sowing to first weeding, incidence and severity of leaf-spot disease and plant population at final harvest were recorded. Relative to farmers' practice, pod yield of cultivar Chinese was significantly increased by 80% with fungicide sprays alone, 108% with fungicide and P application, and 113% with fungicide and P application at higher sowing density. Cultivar Manipinter treated with fungicide and P gave 107% increase in pod yield relative to farmers' practice. Correlation and stepwise regression analyses suggested that major determinants of groundnut pod yield in farmers' fields were plant density, leaf-spot disease and P availability. The increase in yield with fungicide and P application translated into a 4–5-fold increase in gross margin for farmers in the region. Returns to labour and labour productivity were doubled with combined use of fungicide and P fertilizer.
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Claims 7
Claim · model-written summary
Fungicide alone increased Chinese pod yield by 80% versus farmer practice.
- Taxon
- groundnut
Arachis hypogaeat0 - Material
- Chinesee0
- Treatment
- fungicide sprays alonee0
- Outcome
- pod yielde0
- Direction
- increasede0
- Value
- 80%e0
- Comparator
- farmers' practicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative to farmers' practice, pod yield of cultivar Chinese was significantly increased by 80% with fungicide sprays alone”
t0“GROUNDNUT”
Claim · model-written summary
Fungicide plus phosphorus increased Chinese pod yield by 108% versus farmer practice.
- Taxon
- groundnutArachis hypogaeat0
- Material
- Chinesee0
- Treatment
- fungicide and P applicatione0
- Outcome
- pod yielde0
- Direction
- increasede0
- Value
- 108%e0
- Comparator
- farmers' practicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative to farmers' practice, pod yield of cultivar Chinese was significantly increased by 80% with fungicide sprays alone, 108% with fungicide and P application”
t0“GROUNDNUT”
Claim · model-written summary
Fungicide and phosphorus at higher density increased Chinese pod yield by 113% versus farmer practice.
- Taxon
- groundnutArachis hypogaeat0
- Material
- Chinesee0
- Treatment
- fungicide and P application at higher sowing densitye0
- Outcome
- pod yielde0
- Direction
- increasede0
- Value
- 113%e0
- Comparator
- farmers' practicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative to farmers' practice, pod yield of cultivar Chinese was significantly increased by 80% with fungicide sprays alone, 108% with fungicide and P application, and 113% with fungicide and P application at higher sowing density.”
t0“GROUNDNUT”
Claim · model-written summary
Fungicide and phosphorus increased Manipinter pod yield by 107% versus farmer practice.
- Taxon
- groundnutArachis hypogaeat0
- Material
- Manipintere0
- Treatment
- fungicide and Pe0
- Outcome
- pod yielde0
- Direction
- increasee0
- Value
- 107%e0
- Comparator
- farmers' practicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivar Manipinter treated with fungicide and P gave 107% increase in pod yield relative to farmers' practice.”
t0“GROUNDNUT”
Claim · model-written summary
Plant density, leaf-spot disease and phosphorus availability were major determinants of pod yield in farmer fields.
- Taxon
- groundnutArachis hypogaeae0
- Interactor
- leaf-spot diseasee0pathogen
- Outcome
- pod yielde0
- Setting
- farmers' fieldse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“major determinants of groundnut pod yield in farmers' fields were plant density, leaf-spot disease and P availability.”
Claim · model-written summary
Fungicide and phosphorus application increased gross margin fourfold to fivefold.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- fungicide and P applicatione0
- Outcome
- gross margine0
- Direction
- increasee0
- Value
- 4–5-folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase in yield with fungicide and P application translated into a 4–5-fold increase in gross margin for farmers in the region.”
t0“GROUNDNUT”
Claim · model-written summary
Combined fungicide and phosphorus doubled returns to labour and labour productivity.
- Taxon
- groundnutArachis hypogaeat0
- Treatment
- combined use of fungicide and P fertilizere0
- Outcome
- Returns to labour and labour productivitye0
- Direction
- doublede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Returns to labour and labour productivity were doubled with combined use of fungicide and P fertilizer.”
t0“GROUNDNUT”
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