Abstract
Yield production of cowpea depends largely on the environmental factors, cropping systems and soil type of the location. In this way, an experiment was conducted to investigate the interaction effect of cropping system, location, season and nitrogen fertilization on cowpea yield. The study comprised of three cropping systems (Maize-cowpea rotation, monocropping cowpea and intercropped cowpea), three locations (Potchefstroom, Taung, and Rustenburg, South Africa) and two rates of nitrogen fertilizers applied in kg ha−1 at each site (0 and 20 at Potchefstroom, 0 and 17 at Rustenburg, 0 and 23 at Taung). A factorial experiment randomized in complete block design with three replications was conducted during 2011/12 and 2012/13 planting seasons. The measured yield and yield components were pod length, seed per pod, pods mass at harvest, grain yield and field biomass yield. Cowpea planted on monocropping and rotational systems had significantly (P < 0.05) higher seed number per pod at harvest, grain yield and field biomass yield than cowpea planted on intercropping. The interaction of location x season plays a vital role on cowpea production by increasing yield. A single cultivar might differ significantly across different locations due to different soil types and climatic factors.
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Claims 5
Claim · model-written summary
Monocropped cowpea had more seeds per pod than intercropped cowpea.
- Taxon
- Cowpea
Vigna unguiculatae0 - Treatment
- monocroppinge0
- Outcome
- seed number per pod at harveste0
- Direction
- highere0
- Comparator
- intercroppinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea planted on monocropping and rotational systems had significantly (P < 0.05) higher seed number per pod at harvest, grain yield and field biomass yield than cowpea planted on intercropping.”
Claim · model-written summary
Rotational cowpea had more seeds per pod than intercropped cowpea.
- Taxon
- CowpeaVigna unguiculatae0
- Treatment
- rotational systemse0
- Outcome
- seed number per pod at harveste0
- Direction
- highere0
- Comparator
- intercroppinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea planted on monocropping and rotational systems had significantly (P < 0.05) higher seed number per pod at harvest, grain yield and field biomass yield than cowpea planted on intercropping.”
Claim · model-written summary
Monocropped cowpea had higher grain and biomass yields than intercropped cowpea.
- Taxon
- CowpeaVigna unguiculatae0
- Treatment
- monocroppinge0
- Outcome
- grain yield and field biomass yielde0
- Direction
- highere0
- Comparator
- intercroppinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea planted on monocropping and rotational systems had significantly (P < 0.05) higher seed number per pod at harvest, grain yield and field biomass yield than cowpea planted on intercropping.”
Claim · model-written summary
Rotational cowpea had higher grain and biomass yields than intercropped cowpea.
- Taxon
- CowpeaVigna unguiculatae0
- Treatment
- rotational systemse0
- Outcome
- grain yield and field biomass yielde0
- Direction
- highere0
- Comparator
- intercroppinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea planted on monocropping and rotational systems had significantly (P < 0.05) higher seed number per pod at harvest, grain yield and field biomass yield than cowpea planted on intercropping.”
Claim · model-written summary
Location and season interacted to increase cowpea yield.
- Taxon
- cowpeaVigna unguiculatae0
- Outcome
- yielde0
- Direction
- increasinge0
- Setting
- locatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The interaction of location x season plays a vital role on cowpea production by increasing yield.”
The same questions in other papers
rotation · yield · Vigna unguiculata (cowpea)Results agree
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- positive
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See all 9 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.