Abstract
Core Ideas Sesame sole crop was highly responsive to fertilizer phosphorus. The profit potential for applied phosphorus was greater for sole crop than intercrop. Sesame did not respond to fertilizer nitrogen and potassium. Sesame‐pearl millet had greater productivity than the sole crops. Manure phosphorus had a high fertilizer phosphorus equivalent. Sesame ( Sesamum indicum L.) is a market crop of small‐scale farmers, particularly women, in the Sahel. Guidelines for soil fertility management may help to boost the productivity and profitability of sesame production. Research was conducted in 2016 and 2017 at Maradi and Magaria in Niger to determine nutrient response functions for sesame as a sole crop and intercropped with pearl millet ( Pennisetum glaucum L.). Sesame yield was doubled with high consistency across site‐years with 30 kg P ha −1 applied and the P response function was determined. Sesame yield was not increased with N and K application. Manure application increased sesame grain yield by 25% when no fertilizer was applied and by 6% with 15 kg P ha −1 . The estimated fertilizer P equivalent value of manure P was 1.72 kg kg −1 for no fertilizer P, indicating that manure application increased crop uptake capacity for indigenous soil P through, for example, increased root growth. Intercropped sesame and pearl millet yields decreased by about 41% of sole crop yields on average but the land equivalent ratio was about 1.2 with intercropping compared with sole crop production. The economically optimal P application rate ranged from 14 to 34 kg P ha −1 for sesame sole crop and from 0 to 15 kg P ha −1 for the intercrop with pearl millet, with the ranges resulting from varying fertilizer P use costs relative to crop value. Fertilizer P use has high profit potential for sesame sole crops in the Sahel but less potential for sesame–millet intercrops.
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Claims 10
Claim · model-written summary
30 kg P ha −1 doubled sesame yield across site-years.
- Taxon
- Sesame
Sesamum indicume0 - Treatment
- 30 kg P ha −1e0
- Outcome
- Sesame yielde0
- Direction
- doublede0
- Value
- 30 kg P ha −1e0
- Setting
- site‐yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sesame yield was doubled with high consistency across site‐years with 30 kg P ha −1 applied”
Claim · model-written summary
Nitrogen and potassium application did not increase sesame yield.
- Taxon
- SesameSesamum indicume0
- Treatment
- N and K applicatione0
- Outcome
- Sesame yielde0
- Direction
- not increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sesame yield was not increased with N and K application”
Claim · model-written summary
Manure increased sesame grain yield by 25% without fertilizer.
- Taxon
- sesameSesamum indicume0
- Treatment
- Manure applicatione0
- Outcome
- sesame grain yielde0
- Direction
- increasede0
- Value
- 25%e0
- Comparator
- no fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Manure application increased sesame grain yield by 25% when no fertilizer was applied”
Claim · model-written summary
Manure increased sesame grain yield by 6% with 15 kg P ha −1.
- Taxon
- sesameSesamum indicume0
- Treatment
- Manure applicatione0
- Outcome
- sesame grain yielde0
- Direction
- increasede0
- Value
- 6%e0
- Comparator
- 15 kg P ha −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Manure application increased sesame grain yield by 25% when no fertilizer was applied and by 6% with 15 kg P ha −1”
Claim · model-written summary
Manure P had an estimated fertilizer P equivalent of 1.72 kg kg −1 without fertilizer P.
- Taxon
- SesameSesamum indicumt0
- Outcome
- fertilizer P equivalent value of manure Pe0
- Value
- 1.72 kg kg −1e0
- Qualifier
- no fertilizer Pe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The estimated fertilizer P equivalent value of manure P was 1.72 kg kg −1 for no fertilizer P”
t0“Sesame Sole Crop and Intercrop Response to Fertilizer”
Claim · model-written summary
Intercropped sesame yield was about 41% below sole crop yield on average.
- Taxon
- sesameSesamum indicume0
- Treatment
- Intercroppede0
- Outcome
- yieldse0
- Direction
- decreasede0
- Value
- about 41%e0
- Comparator
- sole crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropped sesame and pearl millet yields decreased by about 41% of sole crop yields on average”
Claim · model-written summary
Intercropped pearl millet yield was about 41% below sole crop yield on average.
- Taxon
- pearl millet
Cenchrus americanuse0 - Treatment
- Intercroppede0
- Outcome
- pearl millet yieldse0
- Direction
- decreasede0
- Value
- about 41%e0
- Comparator
- sole crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropped sesame and pearl millet yields decreased by about 41% of sole crop yields on average”
Claim · model-written summary
Intercropping had a land equivalent ratio of about 1.2 relative to sole crops.
- Taxon
- SesameSesamum indicumt0
- Treatment
- intercroppinge0
- Outcome
- land equivalent ratioe0
- Direction
- higherinferrede0
- Value
- about 1.2e0
- Comparator
- sole crop productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the land equivalent ratio was about 1.2 with intercropping compared with sole crop production”
t0“Sesame Sole Crop and Intercrop Response to Fertilizer”
Claim · model-written summary
Economically optimal P rate for sole sesame ranged from 14 to 34 kg P ha −1.
- Taxon
- sesameSesamum indicume0
- Outcome
- economically optimal P application ratee0
- Value
- 14 to 34 kg P ha −1e0
- Qualifier
- sole crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The economically optimal P application rate ranged from 14 to 34 kg P ha −1 for sesame sole crop”
Claim · model-written summary
Economically optimal P rate for sesame–pearl millet intercrop ranged from 0 to 15 kg P ha −1.
- Taxon
- sesameSesamum indicume0
- Outcome
- economically optimal P application ratee0
- Value
- 0 to 15 kg P ha −1e0
- Qualifier
- intercrop with pearl millete0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The economically optimal P application rate ranged from 14 to 34 kg P ha −1 for sesame sole crop and from 0 to 15 kg P ha −1 for the intercrop with pearl millet”
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See all 30 papers →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.