Abstract
Core Ideas Pearl millet and cowpea intercrop production is important in the Sahel. Inadequate nutrient supply constrains crop growth. Pearl millet sole crop nutrient response information is applicable for intercropping. Application of N and P to intercrop compared to sole crop has more profit potential. In the Sahel, crop production is dominated by pearl millet [ Pennisetum glaucum (L.) R. Br.] cropping systems including intercropping with cowpea [ Vigna unguiculata (L.) Walp]. The research objectives were to determine pearl millet sole crop (PMSC) and intercrop nutrient response functions, profit opportunities from fertilizer use, and a means of relating intercrop to PMSC response. Pearl millet–cowpea trials were conducted in Niger and Mali. The treatment structure was an incomplete factorial with five, four, and four levels of P, N, and K, respectively. Response functions were determined for intercropping with cowpea yield converted to a pearl millet grain yield equivalent for ratios of cowpea to pearl millet grain value (CpPm) ranging from 1 to 5 kg kg −1 . Response functions were also determined in consideration of fodder value. A method of adjusting PMSC response coefficients with CpPm as the independent variable was developed for determination of intercrop response functions. Yields and responses to nutrients were low but adequate for profitable N and P use. Value of intercrop production ranged from 50 to 125% more compared with PMSC for CpPm of 2 and 4, and the respective response to 10 kg ha −1 P was 28 and 135% more with intercrop. Consideration of fodder added 23% to the yield value. Application of N and P for intercrop compared with PMSC production has much more profit potential. The ability to apply PMSC functions in determination of pearl millet–cowpea responses to applied nutrients offers a means to improve fertilizer use for the intercrop.
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Claims 6
Claim · model-written summary
The value of pearl millet-cowpea intercrop production was 50 to 125% more than the pearl millet sole crop at CpPm of 2 and 4.
- Taxon
- Pearl millet
Cenchrus americanust0 - Treatment
- intercrope1
- Outcome
- Value of intercrop productione1
- Direction
- moree1
- Value
- 50 to 125%e1
- Qualifier
- CpPm of 2 and 4e1
- Comparator
- PMSCe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pearl Millet and Cowpea Intercrop Response to Applied Nutrients in West Africa”
e1“Value of intercrop production ranged from 50 to 125% more compared with PMSC for CpPm of 2 and 4”
Claim · model-written summary
Response to 10 kg ha −1 P was 28 and 135% more with intercrop than with the pearl millet sole crop.
- Taxon
- Pearl milletCenchrus americanust0
- Treatment
- 10 kg ha −1 Pe2
- Outcome
- responsee2
- Direction
- moree2
- Value
- 28 and 135%e2
- Qualifier
- CpPm of 2 and 4e1
- Comparator
- PMSCe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pearl Millet and Cowpea Intercrop Response to Applied Nutrients in West Africa”
e1“Value of intercrop production ranged from 50 to 125% more compared with PMSC for CpPm of 2 and 4”
e2“the respective response to 10 kg ha −1 P was 28 and 135% more with intercrop”
Claim · model-written summary
Consideration of fodder added 23% to the yield value of the pearl millet-cowpea intercrop.
- Taxon
- Pearl milletCenchrus americanust0
- Treatment
- Consideration of foddere3
- Outcome
- yield valuee3
- Direction
- addede3
- Value
- 23%e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pearl Millet and Cowpea Intercrop Response to Applied Nutrients in West Africa”
e3“Consideration of fodder added 23% to the yield value”
Claim · model-written summary
Application of N and P for the intercrop has much more profit potential than for the pearl millet sole crop.
- Taxon
- Pearl milletCenchrus americanust0
- Treatment
- Application of N and Pe4
- Outcome
- profit potentiale4
- Direction
- moree4
- Comparator
- PMSCe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pearl Millet and Cowpea Intercrop Response to Applied Nutrients in West Africa”
e4“Application of N and P for intercrop compared with PMSC production has much more profit potential”
Claim · model-written summary
Pearl millet yields and responses to nutrients were low but adequate for profitable N and P use.
- Taxon
- Pearl milletCenchrus americanust0
- Outcome
- Yields and responses to nutrientse5
- Qualifier
- low but adequate for profitable N and P usee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pearl Millet and Cowpea Intercrop Response to Applied Nutrients in West Africa”
e5“Yields and responses to nutrients were low but adequate for profitable N and P use”
Claim · model-written summary
A method adjusting pearl millet sole crop response coefficients with CpPm gives intercrop response functions.
- Taxon
- Pearl milletCenchrus americanust0
- Outcome
- intercrop response functionse6
- Comparator
- PMSC response coefficientse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pearl Millet and Cowpea Intercrop Response to Applied Nutrients in West Africa”
e6“A method of adjusting PMSC response coefficients with CpPm as the independent variable was developed for determination of intercrop response functions”
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