Abstract
An Agronomic field study was conducted at University of Limpopo Experimental farm, Syferkuil, over two summer growing seasons to determine the optimum phosphorus (P) rate and also assess the productivity of pigeonpea under intercrop with maize. Five P rates (0, 15, 30, 45, and 60 kg P ha-1) were evaluated under sole and intercropped pigeonpea. Treatments were laid out in a randomized complete block design with four replicates. Results revealed that variable P fertilizer rates exerted significant effect on pigeonpea grain yield in both seasons. Highest grain yields of 922 and 1141.7 kg ha-1 under sole and intercrop plots, respectively, were achieved at 45 kg P ha-1 during first and second seasons, respectively. However, the predicted optimum grain yield of 734 and 1034 kg ha-1 based on the response model was achieved at 52.67 kg P ha-1 and 42.84 kg P ha-1, in the respective seasons. Intercropping achieved a significantly higher pigeonpea grain yield (+37%) during second year than sole cropping following P addition; with over 21% mean grain yield advantage across the two planting seasons. Hence, depending on the inherent soil-P level, application of 42-53 kg P ha-1 under pigeonpea/maize intercrop represents the range at which P is optimum for maximum pigeonpea grain yield and better returns for farmers.
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Claims 8
Claim · model-written summary
Variable phosphorus rates significantly affected pigeonpea grain yield in both seasons.
- Taxon
- pigeonpea
Cajanus cajane0 - Treatment
- variable P fertilizer ratese0
- Outcome
- pigeonpea grain yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“variable P fertilizer rates exerted significant effect on pigeonpea grain yield in both seasons”
Claim · model-written summary
Sole pigeonpea yielded 922 kg ha-1 at 45 kg P ha-1 in the first season.
- Taxon
- pigeonpeaCajanus cajane1
- Treatment
- 45 kg P ha-1e0
- Outcome
- grain yieldse0
- Direction
- Higheste0
- Value
- 922e0
- Qualifier
- solee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest grain yields of 922 and 1141.7 kg ha-1 under sole and intercrop plots, respectively, were achieved at 45 kg P ha-1 during first and second seasons, respectively.”
e1“effect on pigeonpea grain yield in both seasons”
Claim · model-written summary
Intercropped pigeonpea yielded 1141.7 kg ha-1 at 45 kg P ha-1 in the second season.
- Taxon
- pigeonpeaCajanus cajane1
- Treatment
- 45 kg P ha-1e0
- Outcome
- grain yieldse0
- Direction
- Higheste0
- Value
- 1141.7 kg ha-1e0
- Qualifier
- intercrop plotse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest grain yields of 922 and 1141.7 kg ha-1 under sole and intercrop plots, respectively, were achieved at 45 kg P ha-1 during first and second seasons, respectively.”
e1“effect on pigeonpea grain yield in both seasons”
Claim · model-written summary
The model predicted 734 kg ha-1 optimum yield in the first season at 52.67 kg P ha-1.
- Taxon
- pigeonpeaCajanus cajane1
- Treatment
- 52.67 kg P ha-1e0
- Outcome
- grain yielde0
- Direction
- optimume0
- Value
- 734e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“predicted optimum grain yield of 734 and 1034 kg ha-1 based on the response model was achieved at 52.67 kg P ha-1 and 42.84 kg P ha-1, in the respective seasons”
e1“effect on pigeonpea grain yield in both seasons”
Claim · model-written summary
The model predicted 1034 kg ha-1 optimum yield in the second season at 42.84 kg P ha-1.
- Taxon
- pigeonpeaCajanus cajane1
- Treatment
- 42.84 kg P ha-1e0
- Outcome
- grain yielde0
- Direction
- optimume0
- Value
- 1034 kg ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“predicted optimum grain yield of 734 and 1034 kg ha-1 based on the response model was achieved at 52.67 kg P ha-1 and 42.84 kg P ha-1, in the respective seasons”
e1“effect on pigeonpea grain yield in both seasons”
Claim · model-written summary
Intercropping raised second-year pigeonpea grain yield by 37% versus sole cropping.
- Taxon
- pigeonpeaCajanus cajane0
- Treatment
- Intercroppinge0
- Outcome
- pigeonpea grain yielde0
- Direction
- highere0
- Value
- +37%e0
- Comparator
- sole croppinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping achieved a significantly higher pigeonpea grain yield (+37%) during second year than sole cropping following P addition; with over 21% mean grain yield advantage across the two planting seasons”
Claim · model-written summary
Intercropping had over 21% mean grain yield advantage across two seasons.
- Taxon
- pigeonpeaCajanus cajane0
- Treatment
- Intercroppinge0
- Outcome
- grain yield advantagee0
- Direction
- advantagee0
- Value
- over 21%e0
- Comparator
- sole croppinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping achieved a significantly higher pigeonpea grain yield (+37%) during second year than sole cropping following P addition; with over 21% mean grain yield advantage across the two planting seasons”
Claim · model-written summary
The authors recommend 42-53 kg P ha-1 for pigeonpea/maize intercrops, depending on soil phosphorus.
- Taxon
- pigeonpeaCajanus cajane0
- Outcome
- application of 42-53 kg P ha-1 under pigeonpea/maize intercrope0
- Qualifier
- depending on the inherent soil-P levele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“depending on the inherent soil-P level, application of 42-53 kg P ha-1 under pigeonpea/maize intercrop represents the range at which P is optimum for maximum pigeonpea grain yield and better returns for farmers”
The same questions in other papers
intercropping · yield · Cajanus cajan (pigeon pea)Results differ
93 papers in the same direction as this paper · 22 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- negative
113 papers more in this group
See all 117 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.