Abstract
The response of lowland weeds and rice (Oryza sativa L.) to various water-management practices was determined at the wetland farms of Coimbatore, during the rainy and winter seasons (1997–98 and 1998–99). Weed population and growth were generally higher during the rainy season than winter season. Variation in irrigation regimes brought about distinct changes in weed growth and establishment in rice fields. Irrigating 5 cm depth 1 day after disappearance of ponded water in transplanted rice recorded the lowest number of weeds, viz. grasses, sedges and broad-leaved weeds and the lowest dry weight of weeds. However, irrigating 5 cm depth 1 day after disappearance of ponded water in direct-seeded rice and continuous submergence of 2.5 cm depth were at par with transplanted rice. Lower water regimes recorded the maximum weed population and biomass due to lack of flooding.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 4
Claim · model-written summary
Weed population and growth were higher in the rainy than winter season.
- Taxon
- rice
Oryza sativat0 - Outcome
- Weed population and growthe0
- Direction
- highere0
- Comparator
- winter seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed population and growth were generally higher during the rainy season than winter season”
t0“rice”
Claim · model-written summary
Irrigation 5 cm deep one day after ponded water disappeared in transplanted rice produced the lowest grass, sedge and broadleaf weed numbers and dry weight.
- Taxon
- riceOryza sativae0
- Treatment
- Irrigating 5 cm depth 1 day after disappearance of ponded watere0
- Interactor
- weedse0weed
- Outcome
- number of weeds, viz. grasses, sedges and broad-leaved weeds and the lowest dry weight of weedse0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigating 5 cm depth 1 day after disappearance of ponded water in transplanted rice recorded the lowest number of weeds, viz. grasses, sedges and broad-leaved weeds and the lowest dry weight of weeds”
Claim · model-written summary
The same 5 cm irrigation in direct-seeded rice and continuous 2.5 cm submergence were comparable to transplanted rice for weed control.
- Taxon
- riceOryza sativae0
- Outcome
- at par with transplanted ricee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigating 5 cm depth 1 day after disappearance of ponded water in direct-seeded rice and continuous submergence of 2.5 cm depth were at par with transplanted rice”
Claim · model-written summary
Lower water regimes had maximum weed population and biomass, attributed to lack of flooding.
- Taxon
- riceOryza sativat0
- Interactor
- weede0weed
- Outcome
- weed population and biomasse0
- Direction
- maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower water regimes recorded the maximum weed population and biomass due to lack of flooding”
t0“rice”
The same questions in other papers
irrigation · weed · Oryza sativa (rice)Positive and negative results
24 papers in the same direction as this paper · 7 in the opposite direction
- negative
- negative
- negative
28 papers more in this group
See all 32 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.