Abstract
An experiment was conducted to determine the effects of component populations on the performance of maize-mungbean intercropping and to relate N utilization efficiency to the yield advantage. The dry matter yields of maize and mungbean in the mixtures studied and the land equivalent ratio (LER) were at a maximum when the component crops were at their respective sole crop populations of 50 x 103 and 300 x 103 plants ha-1, respectively. Component populations of mungbean did not have a significant effect on the grain yield of maize but mungbean yield decreased as the population of either component crop was increased. Nitrogen absorption by both maize and mungbean was lower in intercropping compared with that in the sole crops; the proportional reduction in N absorption efficiency of maize ranged from 0.28 to 0.37 and that of mungbean from 0.50 to 0.57. Increasing the maize population caused a reduction in the N absorption efficiency of mungbean although it increased the N absorption efficiency of maize. The N absorption efficiency of maize and mungbean intercropped in all combinations of populations was higher than that of the sole crops added together. This was the major source of the increase in LER over unity. The N conversion efficiency, measured as the unit of grains produced unit-1 of N absorbed, decreased in intercropped maize but increased slightly in mungbean. However, in contrast to the absorption efficiency of nitrogen, the contribution of the overall conversion efficiency towards increasing the LER over unity was negative.
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Claims 14
Claim · model-written summary
Maize dry matter yield was maximal at sole crop component populations.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dry matter yields of maize and mungbean in the mixtures studied and the land equivalent ratio (LER) were at a maximum when the component crops were at their respective sole crop populations of 50 x 103 and 300 x 103 plants ha-1, respectively.”
Claim · model-written summary
Mungbean dry matter yield was maximal at sole crop component populations.
- Taxon
- mungbean
.jpg?width=60)
Vigna radiatae0 - Treatment
- 300 x 103 plants ha-1e0
- Outcome
- dry matter yields of maize and mungbeane0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The dry matter yields of maize and mungbean in the mixtures studied and the land equivalent ratio (LER) were at a maximum when the component crops were at their respective sole crop populations of 50 x 103 and 300 x 103 plants ha-1, respectively.”
Claim · model-written summary
Land equivalent ratio was maximal at the respective sole crop populations.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dry matter yields of maize and mungbean in the mixtures studied and the land equivalent ratio (LER) were at a maximum when the component crops were at their respective sole crop populations of 50 x 103 and 300 x 103 plants ha-1, respectively.”
Claim · model-written summary
Mungbean population had no significant effect on maize grain yield.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Component populations of mungbean did not have a significant effect on the grain yield of maize”
Claim · model-written summary
Mungbean yield fell as either component crop population increased.
- Taxon
- mungbeanVigna radiatae0
- Treatment
- population of either component crope0
- Outcome
- mungbean yielde0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mungbean yield decreased as the population of either component crop was increased”
Claim · model-written summary
Intercropping reduced maize nitrogen absorption relative to sole crops.
- Treatment
- intercroppinge0
- Outcome
- N absorption efficiency of maizee0
- Direction
- reductione0
- Value
- 0.28 to 0.37e0
- Comparator
- sole cropse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen absorption by both maize and mungbean was lower in intercropping compared with that in the sole crops; the proportional reduction in N absorption efficiency of maize ranged from 0.28 to 0.37”
Claim · model-written summary
Intercropping reduced mungbean nitrogen absorption relative to sole crops.
- Taxon
- mungbeanVigna radiatae0
- Treatment
- intercroppinge0
- Outcome
- N absorption efficiency of maizee0
- Direction
- reductione0
- Value
- 0.50 to 0.57e0
- Comparator
- sole cropse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen absorption by both maize and mungbean was lower in intercropping compared with that in the sole crops; the proportional reduction in N absorption efficiency of maize ranged from 0.28 to 0.37 and that of mungbean from 0.50 to 0.57.”
Claim · model-written summary
Increasing maize population reduced mungbean N absorption efficiency.
- Taxon
- mungbeanVigna radiatae0
- Treatment
- Increasing the maize populatione0
- Outcome
- N absorption efficiency of mungbeane0
- Direction
- reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the maize population caused a reduction in the N absorption efficiency of mungbean”
Claim · model-written summary
Increasing maize population raised maize N absorption efficiency.
- Treatment
- Increasing the maize populatione1
- Outcome
- N absorption efficiency of maizee0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“although it increased the N absorption efficiency of maize”
e1“Increasing the maize population caused a reduction in the N absorption efficiency of mungbean although it increased the N absorption efficiency of maize”
Claim · model-written summary
Combined intercrop N absorption efficiency exceeded that of the sole crops added together.
- Treatment
- intercroppede0
- Outcome
- N absorption efficiency of maize and mungbeane0
- Direction
- highere0
- Comparator
- sole crops added togethere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The N absorption efficiency of maize and mungbean intercropped in all combinations of populations was higher than that of the sole crops added together.”
Claim · model-written summary
Higher N absorption efficiency was the major source of LER over unity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This was the major source of the increase in LER over unity.”
e1“The N absorption efficiency of maize and mungbean intercropped in all combinations of populations was higher than that of the sole crops added together. This was the major source of the increase in LER over unity.”
Claim · model-written summary
Intercropping decreased maize N conversion efficiency.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The N conversion efficiency, measured as the unit of grains produced unit-1 of N absorbed, decreased in intercropped maize”
Claim · model-written summary
Intercropping slightly increased mungbean N conversion efficiency.
- Taxon
- mungbeanVigna radiatae0
- Treatment
- intercroppede1
- Outcome
- N conversion efficiencye1
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but increased slightly in mungbean”
e1“The N conversion efficiency, measured as the unit of grains produced unit-1 of N absorbed, decreased in intercropped maize but increased slightly in mungbean”
Claim · model-written summary
Overall N conversion efficiency contributed negatively to LER over unity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contribution of the overall conversion efficiency towards increasing the LER over unity was negative”
e1“The N conversion efficiency, measured as the unit of grains produced unit-1 of N absorbed, decreased in intercropped maize”
The same questions in other papers
intercropping · nutrient: content · Vigna radiata (mung bean)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
1 paper more in this group
See all 5 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
- no effect
- negative
- negative
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.