Abstract
Genotype experiments carried out at ICRISAT Centre 1976-8 are decribed. A sorghum/pigeon pea experiment in 1977 examined 17 genotypes of pigeon pea with a standard sorghum genotype. Sorghum produced yields ranging from 82 to 99% of the sole-crop yield, but the differences were not significant. The pigeon pea genotypes achieved yields ranging from 36 to 73% of their sole-crop yields, giving total land equivalent ratios (LERs) up to 1.66. Although absolute pigeon pea yields in intercropping were dependent to some extent on sole-crop yields, this dependency only accounted for 40% of the variability in intercrop yields. There were indications that the most suitable pigeon pea plant type had a reasonably compact growth in the early stages to avoid competition from the sorghum but a spreading habit later to utilize resources after sorghum harvest. In 2 experiments, 3 pearl millet genotypes were examined in all combinations with 4 groundnut genotypes. Yield advantages up to 25-30% were achieved. It was concluded that the magnitude of the yield advantage was mainly determined by the groundnut genotype, whereas the proportion of groundnut yield to millet yield was mainly determined by the millet genotype. 3 sorghum/millet genotype experiments are described. In the 1st experiment 48 genotypes of pearl millet were grown with a standard sorghum genotype. Correlations between yield advantage and a range of millet plant characters did little to help identify which characters were most desirable in intercropping. The 2 later experiments examined 4 sorghum genotypes in combination with 4 millet genotypes. Yield advantages ranged up to just over 30%. These were considered to be very large advantages for 2 such similar crops; this combination is particularly worthy of further study
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Claims 11
Claim · model-written summary
Intercropped sorghum yielded 82 to 99% of sole crop yield, without significant genotype differences.
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum produced yields ranging from 82 to 99% of the sole-crop yield, but the differences were not significant.”
Claim · model-written summary
Pigeon pea genotypes yielded 36 to 73% of their sole crop yields.
- Taxon
- pigeon pea
Cajanus cajane0 - Material
- pigeon pea genotypese0
- Outcome
- yieldse0
- Value
- 36 to 73%e0
- Comparator
- sole-crop yieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pigeon pea genotypes achieved yields ranging from 36 to 73% of their sole-crop yields”
Claim · model-written summary
The sorghum and pigeon pea intercrop reached a land equivalent ratio of 1.66.
Not reportedTaxon
Verbatim
e0“giving total land equivalent ratios (LERs) up to 1.66.”
Claim · model-written summary
Sole crop pigeon pea yield accounted for 40% of variation in intercrop yield.
- Taxon
- pigeon peaCajanus cajane0
- Outcome
- variability in intercrop yieldse0
- Value
- 40%e0
- Comparator
- sole-crop yieldse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Although absolute pigeon pea yields in intercropping were dependent to some extent on sole-crop yields, this dependency only accounted for 40% of the variability in intercrop yields.”
Claim · model-written summary
An early compact and later spreading pigeon pea type appeared most suitable for intercropping.
- Taxon
- pigeon peaCajanus cajane0
- Outcome
- reasonably compact growth in the early stagese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were indications that the most suitable pigeon pea plant type had a reasonably compact growth in the early stages to avoid competition from the sorghum but a spreading habit later to utilize resources after sorghum harvest.”
Claim · model-written summary
Pearl millet and groundnut genotype combinations achieved yield advantages up to 25-30%.
Not reportedTaxon
Verbatim
e0“Yield advantages up to 25-30% were achieved.”
Claim · model-written summary
Groundnut genotype mainly determined the magnitude of millet groundnut yield advantage.
- Taxon
- groundnut
Arachis hypogaeae0 - Material
- groundnut genotypee0
- Outcome
- magnitude of the yield advantagee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the magnitude of the yield advantage was mainly determined by the groundnut genotype”
Claim · model-written summary
Millet genotype mainly determined the groundnut to millet yield proportion.
Not reportedDirection
Verbatim
e0“the proportion of groundnut yield to millet yield was mainly determined by the millet genotype.”
Claim · model-written summary
Millet plant characters correlated too weakly with yield advantage to identify desired intercropping characters.
- Taxon
- millete0
- Material
- millet plant characterse0
- Outcome
- Correlations between yield advantage and a range of millet plant characterse0
Not reportedDirection
Verbatim
e0“Correlations between yield advantage and a range of millet plant characters did little to help identify which characters were most desirable in intercropping.”
Claim · model-written summary
Later sorghum millet genotype combinations achieved yield advantage just over 30%.
Not reportedTaxon
Verbatim
e0“Yield advantages ranged up to just over 30%.”
Claim · model-written summary
The authors considered sorghum and millet intercropping particularly worthy of further study.
- Outcome
- particularly worthy of further studye0
Not reportedTaxon
Verbatim
e0“this combination is particularly worthy of further study”