Abstract
This study was conducted to find out if there are some differences in germination, growth and morphological characteristics between rice(Oryza saliva) and barnyardgrass(Echinochloa crus-galli) under various cropping patterns and to abtain the fundamental information on weed control method in direct seeded rice. Rice was broadcast on soil-surface(Broadcast rice), drill seeded in soil(Drilled rice) and barnyardgrass was drill seeded in soil(Barnyardgrass) under dry(Dry condition) and water direct seeded condition(Water condition). Also rice was transplanted with 8-day seedlings(8 -day-old seedling) and 25-day seedlings(25-*day-old seedling) under transplanting condition(Transplanting condition) At 1, 2, 3, 5, 7, 10, 15 and 20 days after seeding or transplanting(DAS/T), plants were harvested to examine their germination, growth and morphology. The major results were as follows ; Until 5 DAS/T growth of rice and barnyardgrass were well established under dry condition but under water condition growth of shoots was mainly elongated. At 20 DAS/T barnyardgrass had greater plant height and shoot fresh weight than rice under direct seeded condition, while plant height and shoot fresh weight of rice was greater than those of barnyardgrass under transplanting condition. Root length of barnyardgrass was greater under the dry, drilled, direct seeded conditions than that of rice under the water, broadcast, transplanting condition, respectively. And root fresh weight of rice under direct seeded condition was similar to that of barnyardgrass but that of rice under transplanting condition was significantly greater than that of barnyardgrass. Barnyardgrass only formed mesocotyls and its length increased with increased depth of seeding. Leaf stage and leaf area of barnyardgrass was greater under the dry, drilled than those of rice under water, broadcast conditions, respectively, while those of rice was greater than those of barnyardgrass under transplanting condition. Chlorophyll contents were higher in barnyardgrass, dry direct seeded rice, transplanted rice, water direct seeded rice in descending order.
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Claims 10
Claim · model-written summary
Under water condition, growth of rice and barnyardgrass shoots was mainly elongated.
- Taxon
- rice
Oryza sativat0 - Treatment
- water conditione0
- Outcome
- growth of shootse0
- Qualifier
- mainly elongatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Until 5 DAS/T growth of rice and barnyardgrass were well established under dry condition but under water condition growth of shoots was mainly elongated”
t0“Growth of Rice and Barnyardgrass under Various Cropping Patterns”
Claim · model-written summary
At 20 DAS/T barnyardgrass had greater plant height and shoot fresh weight than rice under direct seeded condition.
- Taxon
- riceOryza sativat0
- Treatment
- direct seeded conditione1
- Interactor
- barnyardgrass
Echinochloa crus-gallie1weed - Outcome
- plant height and shoot fresh weighte1
- Direction
- greatere1
- Comparator
- ricee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“At 20 DAS/T barnyardgrass had greater plant height and shoot fresh weight than rice under direct seeded condition”
t0“Growth of Rice and Barnyardgrass under Various Cropping Patterns”
Claim · model-written summary
Plant height and shoot fresh weight of rice were greater than those of barnyardgrass under transplanting condition.
- Taxon
- riceOryza sativat0
- Treatment
- transplanting conditione2
- Interactor
- barnyardgrassEchinochloa crus-gallie2weed
- Outcome
- plant height and shoot fresh weighte2
- Direction
- greatere2
- Comparator
- barnyardgrasse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“while plant height and shoot fresh weight of rice was greater than those of barnyardgrass under transplanting condition”
t0“Growth of Rice and Barnyardgrass under Various Cropping Patterns”
Claim · model-written summary
Root length of barnyardgrass was greater under dry, drilled, direct seeded conditions than that of rice under water, broadcast, transplanting condition.
- Taxon
- riceOryza sativat0
- Treatment
- dry, drilled, direct seeded conditionse3
- Interactor
- barnyardgrassEchinochloa crus-gallie3weed
- Outcome
- Root lengthe3
- Direction
- greatere3
- Comparator
- rice under the water, broadcast, transplanting conditione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Root length of barnyardgrass was greater under the dry, drilled, direct seeded conditions than that of rice under the water, broadcast, transplanting condition, respectively”
t0“Growth of Rice and Barnyardgrass under Various Cropping Patterns”
Claim · model-written summary
Root fresh weight of rice under direct seeded condition was similar to that of barnyardgrass.
- Taxon
- riceOryza sativat0
- Treatment
- direct seeded conditione4
- Interactor
- barnyardgrassEchinochloa crus-gallie4weed
- Outcome
- root fresh weighte4
- Direction
- similare4
- Comparator
- barnyardgrasse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“And root fresh weight of rice under direct seeded condition was similar to that of barnyardgrass but that of rice under transplanting condition was significantly greater than that of barnyardgrass”
t0“Growth of Rice and Barnyardgrass under Various Cropping Patterns”
Claim · model-written summary
Root fresh weight of rice under transplanting condition was significantly greater than that of barnyardgrass.
- Taxon
- riceOryza sativat0
- Treatment
- transplanting conditione4
- Interactor
- barnyardgrassEchinochloa crus-gallie4weed
- Outcome
- root fresh weighte4
- Direction
- significantly greatere4
- Comparator
- barnyardgrasse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“And root fresh weight of rice under direct seeded condition was similar to that of barnyardgrass but that of rice under transplanting condition was significantly greater than that of barnyardgrass”
t0“Growth of Rice and Barnyardgrass under Various Cropping Patterns”
Claim · model-written summary
Barnyardgrass formed only mesocotyls, and its length increased with increased depth of seeding.
- Taxon
- riceOryza sativat0
- Organ / stage
- mesocotylse5
- Treatment
- depth of seedinge5
- Interactor
- BarnyardgrassEchinochloa crus-gallie5weed
- Outcome
- its lengthe5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Barnyardgrass only formed mesocotyls and its length increased with increased depth of seeding”
t0“Growth of Rice and Barnyardgrass under Various Cropping Patterns”
Claim · model-written summary
Chlorophyll contents were higher in barnyardgrass than in rice under the compared cropping patterns, in descending order.
- Taxon
- riceOryza sativat0
- Interactor
- barnyardgrassEchinochloa crus-gallie6weed
- Outcome
- Chlorophyll contentse6
- Direction
- highere6
- Qualifier
- in descending ordere6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Chlorophyll contents were higher in barnyardgrass, dry direct seeded rice, transplanted rice, water direct seeded rice in descending order”
t0“Growth of Rice and Barnyardgrass under Various Cropping Patterns”
Claim · model-written summary
Leaf area of barnyardgrass was greater under dry, drilled conditions than that of rice under water, broadcast conditions.
- Taxon
- riceOryza sativat0
- Treatment
- dry, drillede7
- Interactor
- barnyardgrassEchinochloa crus-gallie7weed
- Outcome
- leaf areae7
- Direction
- greatere7
- Comparator
- rice under water, broadcast conditionse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Leaf stage and leaf area of barnyardgrass was greater under the dry, drilled than those of rice under water, broadcast conditions, respectively, while those of rice was greater than those of barnyardgrass under transplanting condition”
t0“Growth of Rice and Barnyardgrass under Various Cropping Patterns”
Claim · model-written summary
Leaf area of rice under transplanting condition was greater than that of barnyardgrass.
- Taxon
- riceOryza sativat0
- Treatment
- transplanting conditione7
- Interactor
- barnyardgrassEchinochloa crus-gallie7weed
- Outcome
- leaf areae7
- Direction
- greatere7
- Comparator
- barnyardgrasse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Leaf stage and leaf area of barnyardgrass was greater under the dry, drilled than those of rice under water, broadcast conditions, respectively, while those of rice was greater than those of barnyardgrass under transplanting condition”
t0“Growth of Rice and Barnyardgrass under Various Cropping Patterns”
The same questions in other papers
transplanting · Echinochloa crus-galli · Oryza sativa (rice)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
4 papers more in this group
See all 8 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.