Abstract
A field experiment was carried out during 1996-97 to 1997-98 to evaluate the effectiveness of prickly sesban [Sesbania cannabina (Retz.) Pers.] (green-manure), wheat (Triticum aestivum L. emend. Fiori & Paol.)-straw incorporation and inclusion of summer cowpea [(Vigna unguiculata (L.) Walp.] fodder in rotation along with nitrogen in rice (Oryza sativa L.)-wheat system. Grain yield of rice with Sesbania green-manure with 40 kg N/ ha (5.73 tonnes/ha), inclusion of cowpea fodder with 80 kg N/ha (5.70 tonnes/ha) and wheat straw incorporation with 80 kg N/ha to rice crop (5.79 tonnes/ha) were statistically similar with no organic N with 120 kg N/ha (5.71 tonnes/ha), indicating saving of 80 kg N/ha for green-manuring and 40 kg N/ha each for cowpea fodder and wheat straw incorporation. Sesbania green-manuring to rice increased the wheat grain yield by about 0.4 tonne/ha. The highest grain yield of wheat (4.48 tonnes/ha) was recorded from Sesbania green-manuring to rice with 120 kg N/ ha to both of rice and wheat crop in the cropping system. Soil fertility in terms of organic carbon (0.03-0.06%), available N (5.8-22.0 kg/ha), P (1.4-3.8 kg/ha) and K (2.2-17.9 kg/ha) increased under green-manure. wheat-straw incorporation, summer cowpea fodder and at higher levels of inorganic N. Only available K had negative balance in soils of cowpea fodder and the control plots and at lower levels of nitrogen.
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Claims 11
Claim · model-written summary
Rice yield with Sesbania green manure plus 40 kg N/ha was statistically similar to rice with 120 kg N/ha and no organic N.
- Taxon
- rice
Oryza sativae1 - Treatment
- Sesbania green-manure with 40 kg N/ hae1
- Outcome
- Grain yield of ricee1
- Direction
- statistically similare1
- Value
- 5.73 tonnes/hae1
- Comparator
- no organic N with 120 kg N/hae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Grain yield of rice with Sesbania green-manure with 40 kg N/ ha (5.73 tonnes/ha), inclusion of cowpea fodder with 80 kg N/ha (5.70 tonnes/ha) and wheat straw incorporation with 80 kg N/ha to rice crop (5.79 tonnes/ha) were statistically similar with no organic N with 120 kg N/ha (5.71 tonnes/ha)”
Claim · model-written summary
Rice yield with cowpea fodder plus 80 kg N/ha was statistically similar to rice with 120 kg N/ha and no organic N.
- Taxon
- riceOryza sativae1
- Treatment
- inclusion of cowpea fodder with 80 kg N/hae1
- Outcome
- Grain yield of ricee1
- Direction
- statistically similare1
- Value
- 5.70 tonnes/hae1
- Comparator
- no organic N with 120 kg N/hae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Grain yield of rice with Sesbania green-manure with 40 kg N/ ha (5.73 tonnes/ha), inclusion of cowpea fodder with 80 kg N/ha (5.70 tonnes/ha) and wheat straw incorporation with 80 kg N/ha to rice crop (5.79 tonnes/ha) were statistically similar with no organic N with 120 kg N/ha (5.71 tonnes/ha)”
Claim · model-written summary
Rice yield with wheat straw incorporation plus 80 kg N/ha was statistically similar to rice with 120 kg N/ha and no organic N.
- Taxon
- riceOryza sativae1
- Treatment
- wheat straw incorporation with 80 kg N/hae1
- Outcome
- Grain yield of ricee1
- Direction
- statistically similare1
- Value
- 5.79 tonnes/hae1
- Comparator
- no organic N with 120 kg N/hae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Grain yield of rice with Sesbania green-manure with 40 kg N/ ha (5.73 tonnes/ha), inclusion of cowpea fodder with 80 kg N/ha (5.70 tonnes/ha) and wheat straw incorporation with 80 kg N/ha to rice crop (5.79 tonnes/ha) were statistically similar with no organic N with 120 kg N/ha (5.71 tonnes/ha)”
Claim · model-written summary
Organic N sources saved about 80 kg N/ha for green manuring and 40 kg N/ha each for cowpea fodder and wheat straw.
- Taxon
- riceOryza sativae1
- Outcome
- saving of 80 kg N/ha for green-manuringe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Grain yield of rice with Sesbania green-manure with 40 kg N/ ha (5.73 tonnes/ha), inclusion of cowpea fodder with 80 kg N/ha (5.70 tonnes/ha) and wheat straw incorporation with 80 kg N/ha to rice crop (5.79 tonnes/ha) were statistically similar with no organic N with 120 kg N/ha (5.71 tonnes/ha)”
e2“indicating saving of 80 kg N/ha for green-manuring and 40 kg N/ha each for cowpea fodder and wheat straw incorporation”
Claim · model-written summary
Sesbania green manuring to rice increased wheat grain yield by about 0.4 t/ha.
- Taxon
- wheat
Triticum aestivume3 - Treatment
- Sesbania green-manuring to ricee3
- Outcome
- wheat grain yielde3
- Direction
- increasede3
- Value
- about 0.4 tonne/hae3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Sesbania green-manuring to rice increased the wheat grain yield by about 0.4 tonne/ha”
Claim · model-written summary
The highest wheat grain yield, 4.48 t/ha, came from Sesbania green manuring with 120 kg N/ha for both rice and wheat.
- Taxon
- wheatTriticum aestivume4
- Treatment
- Sesbania green-manuring to rice with 120 kg N/ ha to both of rice and wheat crope4
- Outcome
- grain yield of wheate4
- Direction
- higheste4
- Value
- 4.48 tonnes/hae4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The highest grain yield of wheat (4.48 tonnes/ha) was recorded from Sesbania green-manuring to rice with 120 kg N/ ha to both of rice and wheat crop in the cropping system”
Claim · model-written summary
Green manure increased soil organic carbon to 0.03-0.06%.
- Taxon
- riceOryza sativat0
- Treatment
- green-manuree5
- Outcome
- organic carbone5
- Direction
- increasede5
- Value
- 0.03-0.06%e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa)”
e5“Soil fertility in terms of organic carbon (0.03-0.06%), available N (5.8-22.0 kg/ha), P (1.4-3.8 kg/ha) and K (2.2-17.9 kg/ha) increased under green-manure”
Claim · model-written summary
Green manure increased available soil N to 5.8-22.0 kg/ha.
- Taxon
- riceOryza sativat0
- Treatment
- green-manuree5
- Outcome
- available Ne5
- Direction
- increasede5
- Value
- 5.8-22.0 kg/hae5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa)”
e5“Soil fertility in terms of organic carbon (0.03-0.06%), available N (5.8-22.0 kg/ha), P (1.4-3.8 kg/ha) and K (2.2-17.9 kg/ha) increased under green-manure”
Claim · model-written summary
Green manure increased soil P to 1.4-3.8 kg/ha.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa)”
e5“Soil fertility in terms of organic carbon (0.03-0.06%), available N (5.8-22.0 kg/ha), P (1.4-3.8 kg/ha) and K (2.2-17.9 kg/ha) increased under green-manure”
Claim · model-written summary
Green manure increased soil K to 2.2-17.9 kg/ha.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa)”
e5“Soil fertility in terms of organic carbon (0.03-0.06%), available N (5.8-22.0 kg/ha), P (1.4-3.8 kg/ha) and K (2.2-17.9 kg/ha) increased under green-manure”
Claim · model-written summary
Cowpea fodder gave a negative available K balance in soil, compared with control plots and lower N levels.
- Taxon
- riceOryza sativat0
- Treatment
- cowpea foddere6
- Outcome
- available Ke6
- Direction
- negative balancee6
- Qualifier
- at lower levels of nitrogene6
- Comparator
- control plotse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa)”
e6“Only available K had negative balance in soils of cowpea fodder and the control plots and at lower levels of nitrogen”
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See all 993 papers →8 of 12 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.