Abstract
The experiment was conducted at Agronomy Field Laboratory of Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh from July 2018 to November 2018 to find out the effect of sunflower residues and herbicides on weed control and yield of T. Aman rice. Weed control methods tested were T1= weedy check,T2 = Weed free check, T3 = Pendimethalin,T4 = Pretilachlor,T5= Butachlor,T6 = Pyrazosulfuron ethyl,T7 = Bensulfuron methyl + Acetachlor,T8 = Bispyriback sodium,T9 =2,4-D amine,T10 =MCPA,T11 = Sunflower residues ,T12 = Sunflower residues + 100%Pyrazosulfuron ethyl,T13 = Sunflower residues + 75%Pyrazosulfuron ethyl,T14 = Sunflower residues + 50%Pyrazosulfuron ethyl. The weed spectrum of the experimental field consisted of all the three groups of weeds viz., grasses (15.78%), sedges (59.02%) and broad-leaved weeds (25.2%). The dominants weeds were Cynodon dactylonand Echinochloa crusgalli among grasses; Cyperus difformis, Fimbristylis miliacea and Scirpus supinus among sedges and Jussiaea decurrens among broad-leaved weeds. Hand weeding recorded the highest weed control efficiency (99.05%) and weedy check recorded the lowest. Among different herbicides applied alone, butachlor had the highest weed control efficiency (87.59%).Hand weeding produced the highest grain yield (5.14 t ha-1) which was statistically similar to butachlor, pendimethalin, pretilachlor, bensulfuron methyl + acetachlor and sunflower residues + 100% pyrazosulfuronethyl. Application of sunflower residues along with the reduced rate (75 or 50%) of pyrazosulfuron ethyl had effective weed control and satisfactory yield comparable to butachlor. The farmers can use this technology as an eco-friendly approach in transplanted Aman rice field.
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Claims 12
Claim · model-written summary
The field weed spectrum was 15.78% grasses.
Verbatim
e0“grasses (15.78%)”
t0“TRANSPLANTED RICE”
Claim · model-written summary
The field weed spectrum was 59.02% sedges.
CarexOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sedges (59.02%)”
t0“TRANSPLANTED RICE”
Claim · model-written summary
The field weed spectrum was 25.2% broad-leaved weeds.
Verbatim
e0“broad-leaved weeds (25.2%)”
t0“TRANSPLANTED RICE”
Claim · model-written summary
Cynodon dactylonand Echinochloa crusgalli were dominant grasses.
- Taxon
- TRANSPLANTED RICEt0
- Interactor
- Cynodon dactylonand Echinochloa crusgalli
Echinochloa crus-gallie0weed - Outcome
- dominants weedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dominants weeds were Cynodon dactylonand Echinochloa crusgalli among grasses”
t0“TRANSPLANTED RICE”
Claim · model-written summary
Cyperus difformis, Fimbristylis miliacea and Scirpus supinus were dominant sedges.
- Taxon
- TRANSPLANTED RICEt0
- Interactor
- Cyperus difformis, Fimbristylis miliacea and Scirpus supinus
Fimbristylis quinquangularis
Cyperus difformisSchoenoplectiella supinae0weede1 - Outcome
- dominants weedse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cyperus difformis, Fimbristylis miliacea and Scirpus supinus among sedges”
t0“TRANSPLANTED RICE”
e1“The dominants weeds were”
Claim · model-written summary
Jussiaea decurrens was a dominant broad-leaved weed.
Verbatim
e0“Jussiaea decurrens among broad-leaved weeds”
t0“TRANSPLANTED RICE”
e1“The dominants weeds were”
Claim · model-written summary
Hand weeding gave the highest weed control efficiency, 99.05%.
- Taxon
- TRANSPLANTED RICEt0
- Treatment
- Hand weedinge0
- Outcome
- weed control efficiencye0
- Direction
- higheste0
- Value
- 99.05%e0
Not reportedComparator
Verbatim
e0“Hand weeding recorded the highest weed control efficiency (99.05%)”
t0“TRANSPLANTED RICE”
Claim · model-written summary
The weedy check had the lowest weed control efficiency.
Verbatim
e0“weedy check recorded the lowest”
t0“TRANSPLANTED RICE”
e1“Hand weeding recorded the highest weed control efficiency”
Claim · model-written summary
Butachlor gave the highest efficiency among herbicides alone, 87.59%.
Verbatim
e0“Among different herbicides applied alone, butachlor had the highest weed control efficiency (87.59%)”
t0“TRANSPLANTED RICE”
Claim · model-written summary
Hand weeding produced the highest grain yield, 5.14 t ha-1, statistically similar to several other treatments.
Verbatim
e0“Hand weeding produced the highest grain yield (5.14 t ha-1) which was statistically similar to butachlor, pendimethalin, pretilachlor, bensulfuron methyl + acetachlor and sunflower residues + 100% pyrazosulfuronethyl”
t0“TRANSPLANTED RICE”
Claim · model-written summary
Sunflower residues with reduced pyrazosulfuron ethyl gave effective weed control and satisfactory yield comparable to butachlor.
Verbatim
e0“Application of sunflower residues along with the reduced rate (75 or 50%) of pyrazosulfuron ethyl had effective weed control and satisfactory yield comparable to butachlor”
t0“TRANSPLANTED RICE”
Claim · model-written summary
The authors recommend the residue and reduced-herbicide technology in transplanted Aman rice.
Verbatim
e0“The farmers can use this technology as an eco-friendly approach in transplanted Aman rice field”
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