Abstract
Effect of summer legumes incorporated as green manures, sunn hemp (cv. Kobutoriso) and peanut (cv. Chiba-handachi), was examined for nitrogen contribution to the succeeding wheat (cv. Norin 61). The dry weight of sunn hemp, of which the stem occupies the largest proportion, was higher than that of peanut at time of incorporation. Total nitrogen content was higher in peanut compared with sunn hemp. The amount of nitrogen fixed by each legume was estimated by the 'difference method' with non-nodulating peanut (cv. Tarapoto) as a reference crop. In peanut, 18 g N per m2 was calculated as the amount of nitrogen fixed at the late maturity stage. The percentage of nitrogen fixed to the total nitrogen was 60-70% in both legumes. On the yield and nitrogen uptake of the succeeding wheat, the peanut plot was superior to the sunn hemp plot. The percentage contribution of nitrogen accumulated by each legume to total nitrogen of the succeding wheat was 11.2% on the peanut plot and 9.4% on the sunn hemp plot. In peanut, the C-N ratio was approximately 20 at time of incorporation. In sunn hemp, it was 40, and the decomposition rate was found to be slower than that of peanut by a modified method using glass fiber filter papers. The results indicated that peanut crop contributed more nitrogen to the succeeding wheat compared with sunn hemp.
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Claims 10
Claim · model-written summary
Sunn hemp dry weight was higher than peanut dry weight at incorporation.
- Taxon
- sunn hemp
Crotalaria junceae0 - Outcome
- dry weighte0
- Direction
- highere0
- Comparator
- peanute0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dry weight of sunn hemp, of which the stem occupies the largest proportion, was higher than that of peanut at time of incorporation”
Claim · model-written summary
Total nitrogen content was higher in peanut than in sunn hemp.
- Taxon
- peanut
Arachis hypogaeae1 - Outcome
- Total nitrogen contente1
- Direction
- highere1
- Comparator
- sunn hempe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Total nitrogen content was higher in peanut compared with sunn hemp”
Claim · model-written summary
Peanut fixed about 18 g N per m2 at late maturity.
- Taxon
- peanutArachis hypogaeae2
- Organ / stage
- late maturity stagee2
- Outcome
- nitrogen fixede2
- Value
- 18 g N per m2e2
- Comparator
- non-nodulating peanut (cv. Tarapoto)e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“In peanut, 18 g N per m2 was calculated as the amount of nitrogen fixed at the late maturity stage”
e3“The amount of nitrogen fixed by each legume was estimated by the 'difference method' with non-nodulating peanut (cv. Tarapoto) as a reference crop”
Claim · model-written summary
The percentage of nitrogen fixed to total nitrogen was 60-70% in both legumes.
Verbatim
e4“The percentage of nitrogen fixed to the total nitrogen was 60-70% in both legumes”
Claim · model-written summary
Peanut green manure gave higher yield and nitrogen uptake of succeeding wheat than sunn hemp.
- Taxon
- wheat
Triticum aestivume5 - Treatment
- peanut plote5
- Outcome
- yield and nitrogen uptakee5
- Direction
- superiore5
- Comparator
- sunn hemp plote5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“On the yield and nitrogen uptake of the succeeding wheat, the peanut plot was superior to the sunn hemp plot”
Claim · model-written summary
Peanut contributed 11.2% of the nitrogen of succeeding wheat.
- Taxon
- wheatTriticum aestivume6
- Treatment
- peanut plote6
- Outcome
- percentage contribution of nitrogen accumulated by each legume to total nitrogene6
- Value
- 11.2%e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The percentage contribution of nitrogen accumulated by each legume to total nitrogen of the succeding wheat was 11.2% on the peanut plot and 9.4% on the sunn hemp plot”
Claim · model-written summary
Sunn hemp contributed 9.4% of the nitrogen of succeeding wheat.
- Taxon
- wheatTriticum aestivume6
- Treatment
- sunn hemp plote6
- Outcome
- percentage contribution of nitrogen accumulated by each legume to total nitrogene6
- Value
- 9.4%e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The percentage contribution of nitrogen accumulated by each legume to total nitrogen of the succeding wheat was 11.2% on the peanut plot and 9.4% on the sunn hemp plot”
Claim · model-written summary
Peanut C-N ratio was about 20 at incorporation.
- Taxon
- peanutArachis hypogaeae7
- Outcome
- C-N ratioe7
- Value
- approximately 20e7
- Qualifier
- at time of incorporatione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“In peanut, the C-N ratio was approximately 20 at time of incorporation. In sunn hemp, it was 40, and the decomposition rate was found to be slower than that of peanut by a modified method using glass fiber filter papers”
Claim · model-written summary
Sunn hemp C-N ratio was 40 at incorporation.
- Taxon
- sunn hempCrotalaria junceae7
- Outcome
- C-N ratioe7
- Value
- 40e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“In peanut, the C-N ratio was approximately 20 at time of incorporation. In sunn hemp, it was 40, and the decomposition rate was found to be slower than that of peanut by a modified method using glass fiber filter papers”
Claim · model-written summary
Sunn hemp residue decomposed more slowly than peanut residue.
- Taxon
- sunn hempCrotalaria junceae7
- Outcome
- decomposition ratee7
- Direction
- slowere7
- Comparator
- peanute7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“In peanut, the C-N ratio was approximately 20 at time of incorporation. In sunn hemp, it was 40, and the decomposition rate was found to be slower than that of peanut by a modified method using glass fiber filter papers”
The same questions in other papers
Arachis hypogaea · yield · Triticum aestivum (wheat)Results agree
13 papers in the same direction as this paper
- positive
- positive
- positive
10 papers more in this group
See all 14 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.