Abstract
A field study was carried out during kharif seasons of 2006 and 2007 at university research farm for generating information on weed flora and to work out integrated weed management practices with its economics in dry direct seeded kharif rice. Among the weed flora, emergence of grasses like Cynodon dactylon and Echinochloa colona, sedges like Cyperus rotundus, Cyperus iria and Fimbristylis miliacea and broad-leaved weeds like Ludwigia parviflora, Ageratum conyzoides, Spilanthes paniculata, Eclipta alba and Enhydra fluctuans were recorded during experimentation. Among the integrated weed management practices, butachlor 1.5 kg/ha as pre-plant surface application followed by practices of brown manuring and post-emergence application of 2, 4-D 0.50 kg/ha at 40 days after sowing recorded highest grain yield (3.0 and 3.88 t/ha), highest net returns (Rs.11889 and 19029/ha) and benefit: cost ratio (0.74 and 1.19) during both the years of investigation. The grain yield was statistically at par with the grain yield (3.14 and 3.98 t/ha) obtained from season long weed free condition. There has been considerable improvement in nutrient use efficiency due to adoption of weed control practices coupled with nitrogen management and among the integrated weed management practices highest nutrient use efficiency of N (50.00 and 64.67 kg grain yield/kg nutrient applied), P (229.36 and 296.64 kg grain yield/kg nutrient applied) and K (90.36 and 116.87 kg grain yield/kg nutrient applied) were highest with butachlor 1.5 kg/ha + brown manuring + 2, 4-D 0.5 kg/ha in both the years.
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Claims 7
Claim · model-written summary
The integrated weed management sequence gave the highest rice grain yield in both years.
- Taxon
- rice
Oryza sativat0 - Treatment
- butachlor 1.5 kg/ha as pre-plant surface application followed by practices of brown manuring and post-emergence application of 2, 4-D 0.50 kg/ha at 40 days after sowinge0
- Outcome
- grain yielde0
- Direction
- higheste0
- Value
- 3.0 and 3.88 t/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of brown manuring on grain yield and nutrient use efficiency in dry direct seeded kharif rice (Oryza sativa L.)”
e0“butachlor 1.5 kg/ha as pre-plant surface application followed by practices of brown manuring and post-emergence application of 2, 4-D 0.50 kg/ha at 40 days after sowing recorded highest grain yield (3.0 and 3.88 t/ha)”
Claim · model-written summary
The integrated weed management sequence gave the highest net returns in both years.
- Taxon
- riceOryza sativat0
- Treatment
- brown manuringt0
- Outcome
- net returnse0
- Direction
- higheste0
- Value
- Rs.11889 and 19029/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of brown manuring on grain yield and nutrient use efficiency in dry direct seeded kharif rice (Oryza sativa L.)”
e0“highest net returns (Rs.11889 and 19029/ha)”
Claim · model-written summary
The integrated weed management sequence gave the highest benefit: cost ratio in both years.
- Taxon
- riceOryza sativat0
- Treatment
- brown manuringt0
- Outcome
- benefit: cost ratioe0
- Value
- 0.74 and 1.19e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of brown manuring on grain yield and nutrient use efficiency in dry direct seeded kharif rice (Oryza sativa L.)”
e0“benefit: cost ratio (0.74 and 1.19)”
Claim · model-written summary
Grain yield under the integrated practice was statistically at par with season long weed free conditions.
- Taxon
- riceOryza sativat0
- Treatment
- brown manuringt0
- Outcome
- grain yielde0
- Direction
- statistically at pare0
- Qualifier
- 3.14 and 3.98 t/hae0
- Comparator
- season long weed free conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of brown manuring on grain yield and nutrient use efficiency in dry direct seeded kharif rice (Oryza sativa L.)”
e0“The grain yield was statistically at par with the grain yield (3.14 and 3.98 t/ha) obtained from season long weed free condition.”
Claim · model-written summary
The integrated practice gave the highest nitrogen use efficiency in both years.
- Taxon
- riceOryza sativat0
- Treatment
- brown manuringt0
- Outcome
- nutrient use efficiency of Ne0
- Direction
- higheste0
- Value
- 50.00 and 64.67 kg grain yield/kg nutrient appliede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of brown manuring on grain yield and nutrient use efficiency in dry direct seeded kharif rice (Oryza sativa L.)”
e0“highest nutrient use efficiency of N (50.00 and 64.67 kg grain yield/kg nutrient applied)”
Claim · model-written summary
The integrated practice gave the highest phosphorus use efficiency in both years.
- Taxon
- riceOryza sativat0
- Treatment
- brown manuringt0
- Outcome
- Pe0
- Value
- 229.36 and 296.64 kg grain yield/kg nutrient appliede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of brown manuring on grain yield and nutrient use efficiency in dry direct seeded kharif rice (Oryza sativa L.)”
e0“P (229.36 and 296.64 kg grain yield/kg nutrient applied) and K”
Claim · model-written summary
The integrated practice gave the highest potassium use efficiency in both years.
- Taxon
- riceOryza sativat0
- Treatment
- butachlor 1.5 kg/ha + brown manuring + 2, 4-D 0.5 kg/hae0
- Outcome
- Ke0
- Direction
- higheste0
- Value
- 90.36 and 116.87 kg grain yield/kg nutrient appliede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of brown manuring on grain yield and nutrient use efficiency in dry direct seeded kharif rice (Oryza sativa L.)”
e0“K (90.36 and 116.87 kg grain yield/kg nutrient applied) were highest with butachlor 1.5 kg/ha + brown manuring + 2, 4-D 0.5 kg/ha”
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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.