Abstract
A traditional approach to deal with the declining yields of rice-wheat system has been introduction of pre-rice legumes as manuring crops. However, despite the long-term beneficial effects on soil fertility and productivity of the rice-wheat system, farmers are reluctant in practicing green manuring technology. Major constraints in the adoption of green manuring technology are the additional cost of green manure production and the lack of short-term benefits. An alternate approach i.e., induction of a short-duration grain legume in the rice-wheat system appears to be more attractive as it offers short-term additional benefits to farmers and is equally beneficial in sustaining the productivity of rice-wheat system over time. Present study was carried out to evaluate the induction of short-duration (maturity period, 55-70 days) mungbean (Vigna radiata (L.) Wilczek) as a grain legume in the pre-rice niche of the rice-wheat annual double cropping system. The mungbean crop (grown without mineral N fertilizer) produced 1166 kg ha −1 of grain in addition to 4461 kg ha −1 of the manure biomass (containing 52 kg N ha −1 ) that was ploughed under before planting rice with urea-N applied in the range of 0-160 kg N ha −1 . Averaged across urea-N treatments, manuring significantly increased the number of tillers plant −1 (11% increase), rice grain yield (6% increase), grain N content (4% increase) and grain N uptake (9% increase). Significant residual effects of manuring were observed on the subsequent wheat crop showing higher grain yield (21% increase), grain N uptake (29% increase) and straw yield (15% increase). The results suggested the feasibility of including mungbean in the pre-rice niche to improve the productivity of the annual rice-wheat double cropping system.
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Claims 9
Claim · model-written summary
Mungbean yielded 1166 kg ha −1 grain.
- Taxon
- mungbean
.jpg?width=60)
Vigna radiatae0 - Outcome
- graine0
- Value
- 1166 kg ha −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The mungbean crop (grown without mineral N fertilizer) produced 1166 kg ha −1 of grain”
Claim · model-written summary
Mungbean produced 4461 kg ha −1 manure biomass.
- Taxon
- mungbeanVigna radiatat0
- Outcome
- manure biomasse0
- Value
- 4461 kg ha −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“4461 kg ha −1 of the manure biomass (containing 52 kg N ha −1 )”
t0“mungbean”
Claim · model-written summary
Mungbean manure increased rice tiller number by 11%.
- Taxon
- rice
Oryza sativat0 - Treatment
- manuringe0
- Outcome
- number of tillers plant −1e0
- Direction
- increasede0
- Value
- 11%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“manuring significantly increased the number of tillers plant −1 (11% increase)”
t0“rice-wheat”
Claim · model-written summary
Mungbean manure increased rice grain yield by 6%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“manuring significantly increased the number of tillers plant −1 (11% increase), rice grain yield (6% increase)”
Claim · model-written summary
Mungbean manure increased rice grain nitrogen content by 4%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice grain yield (6% increase), grain N content (4% increase)”
e1“manuring significantly increased”
t0“rice-wheat”
Claim · model-written summary
Mungbean manure increased rice grain nitrogen uptake by 9%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain N uptake (9% increase)”
e1“manuring significantly increased”
t0“rice-wheat”
Claim · model-written summary
Residual manure increased wheat grain yield by 21%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant residual effects of manuring were observed on the subsequent wheat crop showing higher grain yield (21% increase)”
Claim · model-written summary
Residual manure increased wheat grain nitrogen uptake by 29%.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- manuringe1
- Outcome
- grain N uptakee0
- Direction
- increasee0
- Value
- 29%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“subsequent wheat crop showing higher grain yield (21% increase), grain N uptake (29% increase)”
e1“Significant residual effects of manuring”
Claim · model-written summary
Residual manure increased wheat straw yield by 15%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“subsequent wheat crop showing higher grain yield (21% increase), grain N uptake (29% increase) and straw yield (15% increase)”
e1“Significant residual effects of manuring”
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