Abstract
Abstract Nitrogen, a vitally important plant nutrient, is subject to various losses that affect its efficiency. We tested prilled urea (PU), urea supergranules (USG), green manures (GM) and farmyard manure (FYM) in a rice-wheat cropping system to determine which were the most efficient and economical N sources. The maximum rice growth, yield and N-uptake occurred with USG and with GM (Sesbania rostrata) plus PU. Incorporation of GM saved 60 kg N/ha. On the following wheat crop, GM (S. aculeata) plus PU and FYM plus PU had the highest residual effect on the number of tillers per m 2 , and straw and grain yield. An increase in N recovery efficiency occurred with combined use of PUand organic Igreen manures compared with PU alone. In areas where USG is costly or unavailable and FYM is scarce, green manures can be a cheap N source that allows small-scale farmers to get sustainable yields in a rice-wheat rotation .
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Claims 7
Claim · model-written summary
USG gave maximum rice growth, yield and nitrogen uptake.
- Taxon
- rice
Oryza sativae0 - Treatment
- USGe0
- Outcome
- rice growth, yield and N-uptakee0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum rice growth, yield and N-uptake occurred with USG and with GM (Sesbania rostrata) plus PU”
Claim · model-written summary
Sesbania rostrata green manure plus PU gave maximum rice growth, yield and nitrogen uptake.
- Taxon
- riceOryza sativae0
- Treatment
- GM (Sesbania rostrata) plus PUe0
- Outcome
- rice growth, yield and N-uptakee0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum rice growth, yield and N-uptake occurred with USG and with GM (Sesbania rostrata) plus PU”
Claim · model-written summary
Incorporating green manure saved 60 kg N/ha.
- Taxon
- riceOryza sativat0
- Treatment
- Incorporation of GMe0
- Outcome
- saved 60 kg N/hae0
- Direction
- savede0
- Value
- 60 kg N/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Incorporation of GM saved 60 kg N/ha”
t0“rice-wheat farming system”
Claim · model-written summary
S. aculeata green manure plus PU had the highest residual effect on wheat tillers and straw and grain yield.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- GM (S. aculeata) plus PUe0
- Outcome
- number of tillers per m 2 , and straw and grain yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the following wheat crop, GM (S. aculeata) plus PU and FYM plus PU had the highest residual effect on the number of tillers per m 2 , and straw and grain yield”
Claim · model-written summary
Farmyard manure plus PU had the highest residual effect on wheat tillers and straw and grain yield.
- Taxon
- wheatTriticum aestivume0
- Treatment
- FYM plus PUe0
- Outcome
- number of tillers per m 2 , and straw and grain yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the following wheat crop, GM (S. aculeata) plus PU and FYM plus PU had the highest residual effect on the number of tillers per m 2 , and straw and grain yield”
Claim · model-written summary
Combining PU and green manures increased N recovery efficiency relative to PU alone.
Verbatim
e0“An increase in N recovery efficiency occurred with combined use of PUand organic Igreen manures compared with PU alone”
t0“rice-wheat farming system”
Claim · model-written summary
The authors recommend green manure as a cheap N source for sustainable rice-wheat yield where USG and FYM are constrained.
Verbatim
e0“In areas where USG is costly or unavailable and FYM is scarce, green manures can be a cheap N source that allows small-scale farmers to get sustainable yields in a rice-wheat rotation”
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See all 3,455 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.