Abstract
The interact ion between upland rice and grain legumes (cowpea, groundnut , pigeon pea) in intercropping was investigated on a Vertisol over two years. Generally, intercropping was advantageous wi th a small reduction in rice yield and a substantial increase in yield of the legume. Pigeon pea- r ice systems gave the highest intercropping advantage of 4 1 - 7 4 % in the first year. In the second year, high intercropping advantages were recorded for cowpea and pigeon pea intercrops but the indeterminate pigeon pea cv. Hy 3C reduced the expected rice yield by half. High irradiance early in the rainy season increased the growth and yield of both rice and legumes compared to the previous season, but intercrop rice was less competitive than Hy 3C. Canopy cover of rice was slowest compared to cowpea and pigeon pea, largely because of the erect leaf arrangement of rice. Intercropping invariably increased the amount of radiation intercepted due to faster canopy cover, \ni.e., spatial complementarity. It was concluded that determinate legumes are more appropriate for intercropping wi th upland rice.
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Claims 14
Claim · model-written summary
Intercropping caused a small reduction in rice yield.
- Taxon
- upland rice
Oryza sativat0 - Treatment
- intercroppinge0
- Outcome
- rice yielde0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Generally, intercropping was advantageous wi th a small reduction in rice yield”
t0“upland rice”
Claim · model-written summary
Intercropping substantially increased legume yield.
Not reportedComparator
Verbatim
e0“a substantial increase in yield of the legume”
t0“legume intercropping systems”
Claim · model-written summary
Pigeon pea–rice systems had the highest intercropping advantage, 4 1 - 7 4 %, in year one.
- Taxon
- Pigeon pea
Cajanus cajane0 - Outcome
- intercropping advantagee0
- Direction
- higheste0
- Value
- 4 1 - 7 4 %e0
- Qualifier
- first yeare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pigeon pea- r ice systems gave the highest intercropping advantage of 4 1 - 7 4 % in the first year.”
Claim · model-written summary
Cowpea intercrops had high intercropping advantage in year two.
- Taxon
- cowpea
Vigna unguiculatae0 - Outcome
- intercropping advantagese0
- Direction
- highe0
- Qualifier
- second yeare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the second year, high intercropping advantages were recorded for cowpea and pigeon pea intercrops”
Claim · model-written summary
Pigeon pea intercrops had high intercropping advantage in year two.
- Taxon
- pigeon peaCajanus cajane0
- Outcome
- intercropping advantagese0
- Direction
- highe0
- Qualifier
- second yeare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the second year, high intercropping advantages were recorded for cowpea and pigeon pea intercrops”
Claim · model-written summary
Indeterminate pigeon pea cultivar Hy 3C halved expected rice yield in year two.
- Taxon
- riceOryza sativae0
- Treatment
- pigeon pea cv. Hy 3Ce0
- Interactor
- pigeon peaCajanus cajane0other
- Outcome
- rice yielde0
- Direction
- reducede0
- Value
- halfe0
- Comparator
- expected rice yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the indeterminate pigeon pea cv. Hy 3C reduced the expected rice yield by half”
Claim · model-written summary
High early rainy-season irradiance increased rice growth and yield relative to the prior season.
- Taxon
- riceOryza sativae0
- Treatment
- High irradiance early in the rainy seasone0
- Outcome
- growth and yielde0
- Direction
- increasede0
- Comparator
- previous seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High irradiance early in the rainy season increased the growth and yield of both rice and legumes compared to the previous season”
Claim · model-written summary
High early rainy-season irradiance increased legume growth and yield relative to the prior season.
Verbatim
e0“High irradiance early in the rainy season increased the growth and yield of both rice and legumes compared to the previous season”
Claim · model-written summary
Intercrop rice was less competitive than Hy 3C.
- Taxon
- riceOryza sativae0
- Outcome
- competitivee0
- Direction
- lesse0
- Comparator
- Hy 3Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“intercrop rice was less competitive than Hy 3C”
Claim · model-written summary
Rice canopy cover developed more slowly than cowpea canopy cover.
- Taxon
- riceOryza sativae0
- Outcome
- Canopy covere0
- Direction
- sloweste0
- Comparator
- cowpeae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Canopy cover of rice was slowest compared to cowpea and pigeon pea”
Claim · model-written summary
Rice canopy cover developed more slowly than pigeon pea canopy cover.
- Taxon
- riceOryza sativae0
- Outcome
- Canopy covere0
- Direction
- sloweste0
- Comparator
- pigeon peae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Canopy cover of rice was slowest compared to cowpea and pigeon pea”
Claim · model-written summary
Erect rice leaves largely explained slower rice canopy cover.
- Taxon
- riceOryza sativae0
- Outcome
- Canopy cover of rice was sloweste0
- Qualifier
- erect leaf arrangement of ricee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Canopy cover of rice was slowest compared to cowpea and pigeon pea, largely because of the erect leaf arrangement of rice.”
Claim · model-written summary
Intercropping increased intercepted radiation through faster canopy cover.
- Treatment
- Intercroppinge0
- Outcome
- amount of radiation interceptede0
- Direction
- increasede0
- Qualifier
- faster canopy covere0
Not reportedTaxonComparator
Verbatim
e0“Intercropping invariably increased the amount of radiation intercepted due to faster canopy cover”
Claim · model-written summary
Authors concluded determinate legumes are more appropriate for upland rice intercropping.
- Taxon
- upland riceOryza sativae0
- Outcome
- determinate legumes are more appropriate for intercropping wi th upland ricee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was concluded that determinate legumes are more appropriate for intercropping wi th upland rice.”
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See all 95 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.