Abstract
Aim: To study the effect of season-long weed management using encapsulated herbicides on weed control, productivity and nutrient uptake of rice. Methodology: Field experiment was carried out with oxadiargyl encapsulated / loaded in zeolite, biochar, starch, water soluble polymer. It was compared with commercial formulation of oxadiargyl, butachlor, weed free check and weedy check. The experiments were laid out in randomized complete block design and replicated thrice. The physico-chemical properties of the experimental sites was sandy clay loam to clay loam in texture with pH ranging from 6.9 to 7.3, low organic carbon content, low available nitrogen, medium available phosphorus and potassium. Results: The lowest weed density and weed dry matter production of 47.3, 28.0 m-2 and 96.2, 32.8 kg ha-1 was observed in 2016 and 2017 respectively with the application of oxadiargyl loaded with zeolite at 20 DAT. Application of butachlor at 1.25 kg ha-1 fb hand weeding on 40 DAT and application of oxadiargyl loaded with zeolite recorded 86.7, 76.9 and 81.3, 72.8 percent higher grain yield in 2016 and 2017, respectively, as compared to weedy check. Higher N, P, K uptake was observed with application of butachlor at 1.25 kg ha-1 fb hand weeding on 40 DAT, which was comparable with oxadiargyl loaded with zeolite and oxadiargyl loaded with biochar during both the year. Interpretation: It can be concluded that oxadiargyl loaded with zeolite was more efficient in controlling weeds coupled with maximum growth and productivity under the constrained situation of manual weeding. Key words: Biochar, Encapsulation, Herbicides, Rice, Water soluble polymer, Zeolite
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Claims 6
Claim · model-written summary
Oxadiargyl loaded with zeolite gave the lowest weed density, 47.3 m-2 in 2016 and 28.0 m-2 in 2017.
- Taxon
- rice
Oryza sativat0 - Treatment
- application of oxadiargyl loaded with zeolite at 20 DATe0
- Interactor
- weede0weed
- Outcome
- weed densitye0
- Direction
- loweste0
- Value
- 47.3, 28.0 m-2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lowest weed density and weed dry matter production of 47.3, 28.0 m-2 and 96.2, 32.8 kg ha-1 was observed in 2016 and 2017 respectively with the application of oxadiargyl loaded with zeolite at 20 DAT”
t0“rice (Oryza sativa)”
Claim · model-written summary
Oxadiargyl loaded with zeolite gave the lowest weed dry matter production, 96.2 and 32.8 kg ha-1 in 2016 and 2017.
- Taxon
- riceOryza sativat0
- Treatment
- application of oxadiargyl loaded with zeolite at 20 DATe0
- Interactor
- weede0weed
- Outcome
- weed dry matter productione0
- Direction
- loweste0
- Value
- 96.2, 32.8 kg ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lowest weed density and weed dry matter production of 47.3, 28.0 m-2 and 96.2, 32.8 kg ha-1 was observed in 2016 and 2017 respectively with the application of oxadiargyl loaded with zeolite at 20 DAT”
t0“rice (Oryza sativa)”
Claim · model-written summary
Butachlor followed by hand weeding increased grain yield by 86.7% in 2016 and 76.9% in 2017 versus the weedy check.
- Taxon
- riceOryza sativat0
- Treatment
- butachlor at 1.25 kg ha-1 fb hand weeding on 40 DATe0
- Outcome
- grain yielde0
- Direction
- highere0
- Value
- 86.7, 76.9e0
- Comparator
- weedy checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of butachlor at 1.25 kg ha-1 fb hand weeding on 40 DAT and application of oxadiargyl loaded with zeolite recorded 86.7, 76.9 and 81.3, 72.8 percent higher grain yield in 2016 and 2017, respectively, as compared to weedy check”
t0“rice (Oryza sativa)”
Claim · model-written summary
Oxadiargyl loaded with zeolite increased grain yield by 81.3% in 2016 and 72.8% in 2017 versus the weedy check.
- Taxon
- riceOryza sativat0
- Treatment
- application of oxadiargyl loaded with zeolitee0
- Outcome
- grain yielde0
- Direction
- highere0
- Value
- 81.3, 72.8 percente0
- Comparator
- weedy checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of butachlor at 1.25 kg ha-1 fb hand weeding on 40 DAT and application of oxadiargyl loaded with zeolite recorded 86.7, 76.9 and 81.3, 72.8 percent higher grain yield in 2016 and 2017, respectively, as compared to weedy check”
t0“rice (Oryza sativa)”
Claim · model-written summary
Butachlor followed by hand weeding produced higher N, P, and K uptake, comparable to two loaded oxadiargyl formulations.
- Taxon
- riceOryza sativat0
- Treatment
- application of butachlor at 1.25 kg ha-1 fb hand weeding on 40 DATe0
- Outcome
- N, P, K uptakee0
- Direction
- Highere0
- Comparator
- oxadiargyl loaded with zeolite and oxadiargyl loaded with biochare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher N, P, K uptake was observed with application of butachlor at 1.25 kg ha-1 fb hand weeding on 40 DAT, which was comparable with oxadiargyl loaded with zeolite and oxadiargyl loaded with biochar during both the year”
t0“rice (Oryza sativa)”
Claim · model-written summary
The authors concluded that zeolite-loaded oxadiargyl was more efficient for weed control and maximized growth and productivity when manual weeding was constrained.
- Taxon
- riceOryza sativat0
- Outcome
- oxadiargyl loaded with zeolite was more efficient in controlling weeds coupled with maximum growth and productivitye0
- Qualifier
- under the constrained situation of manual weedinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“oxadiargyl loaded with zeolite was more efficient in controlling weeds coupled with maximum growth and productivity under the constrained situation of manual weeding”
t0“rice (Oryza sativa)”
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