Abstract
Field experiments were conducted at Agricultural Research Station, Mannuthy during 2004 and 2005 to fine tune the technology of dual culturing of rice ( Or yza sativa) and green manure crops to ensure the supply of re- quired quantity of organic manure to dry seeded rice in a cost effective manner. Two green manure crops viz., horse gram ( Macrotyloma uniflorum (Lam) Verdc) and cowpea [ Vigna unguiculata (L.) Walp.] sown along with rice were incorporated at 45 days after sowing by three methods viz., using cono weeder, spraying 2,4-D, and allowing self decomposition due to flooding at the onset of monsoon. Two levels of nitrogen (100 and 75% of recom- mended dose of N i.e. 90 kg) were super imposed over them. Dual cropping of cowpea with dry seeded rice could add about 12 t/ha of organic manure and resulted in a weed suppression of 69-75% and reduction in labour re- quirement for weeding (40 man-days/ha). This system guarantees 25% nitrogen saving (22.5 kg/ha) with 11% yield enhancement and increase in profitability (Rs 14,562/ha). The study revealed that, cowpea can be effectively incorporated by spraying 2, 4-D with effective weed control. The peak nitrogen release from concurrently grown cowpea coincides with the critical growth stages of rice, the panicle initiation stage, and thereby ensures availabil- ity of N at the critical stage.
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Claims 6
Claim · model-written summary
Dual cropping of cowpea with dry seeded rice could add about 12 t/ha of organic manure.
- Taxon
- rice
Oryza sativae0 - Treatment
- Dual cropping of cowpea with dry seeded ricee1
- Outcome
- organic manuree1
- Direction
- adde1
- Value
- 12 t/hae1
- Setting
- Agricultural Research Station, Mannuthye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Agricultural Research Station, Mannuthy during 2004 and 2005 to fine tune the technology of dual culturing of rice ( Or yza sativa) and green manure crops”
e1“Dual cropping of cowpea with dry seeded rice could add about 12 t/ha of organic manure”
Claim · model-written summary
Dual cropping guarantees a 25% nitrogen saving (22.5 kg/ha).
- Taxon
- riceOryza sativae0
- Treatment
- Dual cropping of cowpea with dry seeded ricee1
- Outcome
- nitrogen savinge3
- Direction
- decreaseinferrede3
- Value
- 25%e3
- Setting
- Agricultural Research Station, Mannuthye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Agricultural Research Station, Mannuthy during 2004 and 2005 to fine tune the technology of dual culturing of rice ( Or yza sativa) and green manure crops”
e1“Dual cropping of cowpea with dry seeded rice could add about 12 t/ha of organic manure”
e3“This system guarantees 25% nitrogen saving (22.5 kg/ha) with 11% yield enhancement and increase in profitability (Rs 14,562/ha)”
Claim · model-written summary
Dual cropping increased rice yield by 11%.
- Taxon
- riceOryza sativae0
- Treatment
- Dual cropping of cowpea with dry seeded ricee1
- Outcome
- yielde3
- Direction
- increaseinferrede3
- Value
- 11%e3
- Setting
- Agricultural Research Station, Mannuthye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Agricultural Research Station, Mannuthy during 2004 and 2005 to fine tune the technology of dual culturing of rice ( Or yza sativa) and green manure crops”
e1“Dual cropping of cowpea with dry seeded rice could add about 12 t/ha of organic manure”
e3“This system guarantees 25% nitrogen saving (22.5 kg/ha) with 11% yield enhancement and increase in profitability (Rs 14,562/ha)”
Claim · model-written summary
Dual cropping increased profitability by Rs 14,562/ha.
- Taxon
- riceOryza sativae0
- Treatment
- Dual cropping of cowpea with dry seeded ricee1
- Outcome
- profitabilitye3
- Direction
- increasee3
- Value
- Rs 14,562/hae3
- Setting
- Agricultural Research Station, Mannuthye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Agricultural Research Station, Mannuthy during 2004 and 2005 to fine tune the technology of dual culturing of rice ( Or yza sativa) and green manure crops”
e1“Dual cropping of cowpea with dry seeded rice could add about 12 t/ha of organic manure”
e3“This system guarantees 25% nitrogen saving (22.5 kg/ha) with 11% yield enhancement and increase in profitability (Rs 14,562/ha)”
Claim · model-written summary
Cowpea can be effectively incorporated into rice by spraying 2,4-D, with effective weed control.
- Taxon
- riceOryza sativae0
- Treatment
- spraying 2, 4-De1
- Outcome
- weed controle1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Agricultural Research Station, Mannuthy during 2004 and 2005 to fine tune the technology of dual culturing of rice ( Or yza sativa) and green manure crops”
e1“The study revealed that, cowpea can be effectively incorporated by spraying 2, 4-D with effective weed control”
Claim · model-written summary
Nitrogen release from concurrently grown cowpea peaks at the panicle initiation stage of rice.
- Taxon
- riceOryza sativae1
- Organ / stage
- panicle initiation stagee1
- Outcome
- peak nitrogen releasee1
- Qualifier
- coincides with the critical growth stages of ricee1
- Setting
- Agricultural Research Station, Mannuthye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Agricultural Research Station, Mannuthy during 2004 and 2005 to fine tune the technology of dual culturing of rice ( Or yza sativa) and green manure crops”
e1“The peak nitrogen release from concurrently grown cowpea coincides with the critical growth stages of rice, the panicle initiation stage”
The same questions in other papers
2,4-D · weed · Oryza sativa (rice)Results differ
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- no effect
- no effect
- positive
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See all 49 papers →Vigna unguiculata · yield · Oryza sativa (rice)Positive and negative results
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- negative
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See all 53 papers →application · weed · Oryza sativa (rice)Positive and negative results
25 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
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23 papers more in this group
See all 27 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.