|
|
|
|
|
| Ronnachai Changsri; Namuco, Ofelia; Johnson, David. |
| Greenhouse study was conducted at the Weed Science, Crop and Environmental Sciences Division, IRRI in February-April, 2013. The objective was to assess the competitiveness of rice (IR64, Sabita, KDML105, Weedy rice (Oryza sativa f. spontanea Acc. 105798 (THA)) and six rice progenies derived from a cross between IR64 and Sabita that have high potential for competitiveness against weeds. The six progenies were SB561 (IR88633:1-66-B), SB562 (IR88633:1-67-B), SB604 (IR88633:1-136-B), SB665 (IR88633:1-138-B), SB708 (IR88633:20-69-B) and SB769 (IR88633:12-55-B). We evaluated the competitive ability of these rice genotypes under severe pressure from Echinochloa colona. The experimental design was RCB with 3 replications. Several rice shoot and root traits were... |
| Tipo: PhysicalObject |
Palavras-chave: Rice; Weed competitiveness; Weed suppression; Shoot traits; Root traits; ข้าว; การแข่งขันกับวัชพืช; การกดดันจากวัชพืช; ลักษณะต้นข้าว; ลักษณะรากข้่าว. |
| Ano: 2014 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5625 |
| |
|
|
| Ronnachai Changsri; Namuco, Ofelia; Migo, Teodoro; Johnson, David. |
| The efficacy of bispyribac sodium, fenoxaprop-p-ethyl + ethoxysulfuron, and propanil+butachlor were evaluated in greenhouse and field experiments, Weed Science, Crop and Environmental Sciences Division, IRRI in February - April 2013. The field plots had high weed density that had 4-6 leaves when the herbicides were applied at 15 days after land preparation. In the greenhouse experiment we grew Echinocloa crus-galli, Ludwigia octovalvis, Cyperus iria, weedy rice (Oryza sativa f. spontanea Acc. 105798 (THA)), and rice cultivars KDML105 and IR64 in pots. At 7 days after rice and weed germination, we sprayed herbicides to the above-mentioned species using a research track sprayer. The results showed that bispyribac sodium and fenoxaprop-p-ethyl+ethoxysulfuron... |
| Tipo: PhysicalObject |
Palavras-chave: Rice; Weed; Herbicides; Greenhouse; Trails; Bispyribac sodium; Fenoxaprop-p-ethyl; Ethoxysulfuron; Propanil; Butachlor; Philippines; ข้าว; วัชพืช; สารป้องกันกำจัดวัชพืช; ความเป็นพิษ; การควบคุมวัชพืช; เรือนทดลอง. |
| Ano: 2014 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5626 |
| |
|
|
|
