Abstract
Rice cultivation always have a significant role in food and livelihood security. The predictions of increasing water deficiency under a changing climate and overcoming labor shortages in agriculture have brought a change in rice cultivation from conventionally flooded transplanting to direct-seeded rice (DSR) but weeds are the major production constrain in direct-seeded rice. Keeping these facts in view a field study was conducted during rainy season (Kharif), 2016 and 2017 at the Main Research Station, Hebbal, Bengaluru, India to study the effect of different weed management treatments in dry direct-seeded rice (upland condition) on growth, yield and soil weed seedbank as measured by emergence of weed seedlings. Among various weed management treatments, hand weeding at 20, 40 and 60 DAS recorded significantly highest paddy grain and straw yield in hand weeding at 20, 40 and 60 DAS (5.50 and 7.22 t/ha, respectively) and found at par with application of bensulfuron-methyl + pretilachlor as pre-emergence fb bispyribac-sodium (5.39 and 7.16 t/ha, respectively). Weedy check recorded significantly lowest yield (1.40 and 2.32 t/ha, respectively). At different intervals significantly the lowest weed seedlings emergence was noticed from the soils collected from different depths in hand weeded plots during both the years. Among various herbicide combinations, pre-emergence application of bensulfuron-methyl + pretilachlor followed by bispyribac-sodium recorded the lowest weed seedbank, as measured by germination of weed seeds and weed seedling emergence, followed by bensulfuron-methyl + pretilachlor and triafamone + ethoxysulfuron. Significantly the highest weed seedbank was noticed from soil collected from weedy check.
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Claims 9
Claim · model-written summary
Hand weeding at 20, 40 and 60 DAS produced the significantly highest paddy grain yield of 5.50 t/ha.
- Taxon
- rice
Oryza sativat0 - Treatment
- hand weeding at 20, 40 and 60 DASe0
- Outcome
- paddy graine0
- Direction
- higheste0
- Value
- 5.50 and 7.22 t/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hand weeding at 20, 40 and 60 DAS recorded significantly highest paddy grain and straw yield in hand weeding at 20, 40 and 60 DAS (5.50 and 7.22 t/ha, respectively)”
t0“dry direct-seeded rice”
Claim · model-written summary
Hand weeding at 20, 40 and 60 DAS produced the significantly highest straw yield of 7.22 t/ha.
- Taxon
- riceOryza sativat0
- Treatment
- hand weeding at 20, 40 and 60 DASe0
- Outcome
- straw yielde0
- Direction
- higheste0
- Value
- 5.50 and 7.22 t/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hand weeding at 20, 40 and 60 DAS recorded significantly highest paddy grain and straw yield in hand weeding at 20, 40 and 60 DAS (5.50 and 7.22 t/ha, respectively)”
t0“dry direct-seeded rice”
Claim · model-written summary
The bensulfuron-methyl plus pretilachlor followed by bispyribac-sodium treatment yielded 5.39 t/ha grain, at par with hand weeding.
- Taxon
- riceOryza sativat0
- Treatment
- application of bensulfuron-methyl + pretilachlor as pre-emergence fb bispyribac-sodiume0
- Outcome
- paddy graine1
- Value
- 5.39 and 7.16 t/hae0
- Comparator
- at pare0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“found at par with application of bensulfuron-methyl + pretilachlor as pre-emergence fb bispyribac-sodium (5.39 and 7.16 t/ha, respectively)”
e1“paddy grain and straw yield”
t0“dry direct-seeded rice”
Claim · model-written summary
The bensulfuron-methyl plus pretilachlor followed by bispyribac-sodium treatment yielded 7.16 t/ha straw, at par with hand weeding.
- Taxon
- riceOryza sativat0
- Treatment
- application of bensulfuron-methyl + pretilachlor as pre-emergence fb bispyribac-sodiume0
- Outcome
- straw yielde1
- Value
- 5.39 and 7.16 t/hae0
- Comparator
- at pare0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“found at par with application of bensulfuron-methyl + pretilachlor as pre-emergence fb bispyribac-sodium (5.39 and 7.16 t/ha, respectively)”
e1“straw yield”
t0“dry direct-seeded rice”
Claim · model-written summary
The weedy check had the significantly lowest grain yield, 1.40 t/ha.
- Taxon
- riceOryza sativat0
- Treatment
- Weedy checke0
- Outcome
- paddy graine1
- Direction
- loweste0
- Value
- 1.40 and 2.32 t/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weedy check recorded significantly lowest yield (1.40 and 2.32 t/ha, respectively).”
e1“paddy grain and straw yield”
t0“dry direct-seeded rice”
Claim · model-written summary
The weedy check had the significantly lowest straw yield, 2.32 t/ha.
- Taxon
- riceOryza sativat0
- Treatment
- Weedy checke0
- Outcome
- straw yielde1
- Direction
- loweste0
- Value
- 1.40 and 2.32 t/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weedy check recorded significantly lowest yield (1.40 and 2.32 t/ha, respectively).”
e1“straw yield”
t0“dry direct-seeded rice”
Claim · model-written summary
Soil from hand-weeded plots had the significantly lowest weed seedling emergence across sampled depths in both years.
- Taxon
- riceOryza sativat0
- Treatment
- hand weeded plotse0
- Outcome
- weed seedlings emergencee0
- Direction
- loweste0
- Qualifier
- different depthse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At different intervals significantly the lowest weed seedlings emergence was noticed from the soils collected from different depths in hand weeded plots during both the years.”
t0“dry direct-seeded rice”
Claim · model-written summary
Among herbicide combinations, bensulfuron-methyl plus pretilachlor followed by bispyribac-sodium had the lowest weed seedbank.
- Taxon
- riceOryza sativat0
- Treatment
- pre-emergence application of bensulfuron-methyl + pretilachlor followed by bispyribac-sodiume0
- Outcome
- weed seedbanke0
- Direction
- loweste0
- Comparator
- bensulfuron-methyl + pretilachlor and triafamone + ethoxysulfurone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pre-emergence application of bensulfuron-methyl + pretilachlor followed by bispyribac-sodium recorded the lowest weed seedbank, as measured by germination of weed seeds and weed seedling emergence, followed by bensulfuron-methyl + pretilachlor and triafamone + ethoxysulfuron”
t0“dry direct-seeded rice”
Claim · model-written summary
Soil from the weedy check had the significantly highest weed seedbank.
- Taxon
- riceOryza sativat0
- Treatment
- weedy checke0
- Outcome
- weed seedbanke0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significantly the highest weed seedbank was noticed from soil collected from weedy check.”
t0“dry direct-seeded rice”
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