Abstract
In order to better understand how mixed crop cultures mitigate stressful conditions, this study aims to highlight the beneficial effect of the intercropping legume-cereal in enhancing soil phosphorus (P) availability for plant growth and productivity in a P-deficient soil of a northern Algerian agroecosystem. To address this question, common bean ( Phaseolus vulgaris L. cv. El Djadida) and maize ( Zea mays L. cv. Filou), were grown as sole- and inter-crops in two experimental sites; S1 (P-deficient) and S2 (P-sufficient) during two growing seasons (2011 and 2012). Growth, nodulation and grain yield were assessed and correlated with the rhizosphere soil P availability. Results showed that P availability significantly increased in the rhizosphere of both species, especially in intercropping under the P-deficient soil conditions. This increase was associated with high efficiency in use of the rhizobial symbiosis (high correlation between plant biomass and nodulation), plant growth and resource (nitrogen (N) and P) use efficiency as indicated by higher land equivalent ratio (LER > 1) and N nutrition index (for maize) in intercropping over sole cropping treatments. Moreover, the rhizosphere P availability and nodule biomass were positively correlated ( r 2 = 0.71, p < 0.01 and r 2 = 0.62, p < 0.01) in the intercropped common bean grown in the P-deficient soil during 2011 and 2012. The increased P availability presumably improved biomass and grain yield in intercropping, though it mainly enhanced grain yield in intercropped maize. Our findings suggest that modification in the intercropped common bean rhizosphere-induced parameters facilitated P uptake, plant biomass and grain yield for the intercropped maize under P-deficiency conditions.
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Claims 9
Claim · model-written summary
Intercropping significantly increased rhizosphere P availability for common bean under P-deficient soil conditions.
- Taxon
- common bean
Phaseolus vulgarist0 - Treatment
- intercroppinge0
- Outcome
- P availabilitye0
- Direction
- increasede0
- Comparator
- sole croppinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P availability significantly increased in the rhizosphere of both species, especially in intercropping under the P-deficient soil conditions”
t0“common bean with maize”
e1“sole cropping treatments”
Claim · model-written summary
Intercropping significantly increased rhizosphere P availability for maize under P-deficient soil conditions.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P availability significantly increased in the rhizosphere of both species, especially in intercropping under the P-deficient soil conditions”
t0“common bean with maize”
e1“sole cropping treatments”
Claim · model-written summary
Intercropping was associated with more effective rhizobial symbiosis, measured by biomass-nodulation correlation.
- Taxon
- common beanPhaseolus vulgarist0
- Interactor
- rhizobiale0symbiont
- Outcome
- high correlation between plant biomass and nodulatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This increase was associated with high efficiency in use of the rhizobial symbiosis (high correlation between plant biomass and nodulation)”
t0“common bean with maize”
e1“sole cropping treatments”
Claim · model-written summary
Intercropping had a higher land equivalent ratio than sole cropping, above one.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- intercroppinge0
- Outcome
- land equivalent ratioe0
- Direction
- highere0
- Value
- LER > 1e0
- Comparator
- sole cropping treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher land equivalent ratio (LER > 1) and N nutrition index (for maize) in intercropping over sole cropping treatments”
t0“common bean with maize”
e1“sole cropping treatments”
Claim · model-written summary
Intercropped maize had a higher N nutrition index than sole-cropped maize.
- Treatment
- intercroppinge0
- Outcome
- N nutrition indexe0
- Direction
- highere0
- Comparator
- sole cropping treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher land equivalent ratio (LER > 1) and N nutrition index (for maize) in intercropping over sole cropping treatments”
t0“common bean with maize”
e1“sole cropping treatments”
Claim · model-written summary
Rhizosphere P availability and nodule biomass were positively correlated in intercropped common bean in 2011.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- intercroppede0
- Outcome
- rhizosphere P availability and nodule biomasse0
- Direction
- positively correlatede0
- Value
- r 2 = 0.71e0
- Qualifier
- 2011e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere P availability and nodule biomass were positively correlated ( r 2 = 0.71, p < 0.01 and r 2 = 0.62, p < 0.01) in the intercropped common bean grown in the P-deficient soil during 2011 and 2012”
t0“common bean with maize”
e1“sole cropping treatments”
Claim · model-written summary
Rhizosphere P availability and nodule biomass were positively correlated in intercropped common bean in 2012.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- intercroppede0
- Outcome
- rhizosphere P availability and nodule biomasse0
- Direction
- positively correlatede0
- Value
- r 2 = 0.62e0
- Qualifier
- 2012e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere P availability and nodule biomass were positively correlated ( r 2 = 0.71, p < 0.01 and r 2 = 0.62, p < 0.01) in the intercropped common bean grown in the P-deficient soil during 2011 and 2012”
t0“common bean with maize”
e1“sole cropping treatments”
Claim · model-written summary
Increased P availability presumably improved biomass in intercropping.
- Taxon
- common beanPhaseolus vulgarist0
- Compound
- Pe0
- Outcome
- biomasse0
- Qualifier
- presumablye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increased P availability presumably improved biomass and grain yield in intercropping”
t0“common bean with maize”
e1“sole cropping treatments”
Claim · model-written summary
Increased P availability presumably improved grain yield in intercropping, mainly for maize.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increased P availability presumably improved biomass and grain yield in intercropping, though it mainly enhanced grain yield in intercropped maize”
t0“common bean with maize”
e1“sole cropping treatments”
The same questions in other papers
intercropping · yield · Phaseolus vulgaris (common bean)Results differ
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- negative
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See all 67 papers →intercropping · nutrient: content · Zea mays (maize)Positive and negative results
121 papers in the same direction as this paper · 15 in the opposite direction · 4 reporting no difference from an alternative
- positive
- positive
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137 papers more in this group
See all 141 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.