Abstract
Growth, grain yield and water use by Calrose rice grown under three flood irrigation regimes and four nitrogen fertilizer treatments were examined at Yanco Agricultural Research Centre, New South Wales, to determine the response of rice under a restricted supply of water. Growth under weekly irrigations before panicle initiation severely restricted dry matter production. When nitrogen (90 kg N/ha) was split with 45 kg N/ha at the three-leaf stage and 45 kg N/ha at panicle initiation followed by permanent flood at panicle initiation, yield was 8.67 t/ha. This was equivalent to yields obtained from conventional practice where all fertilizer was applied at the three-leaf stage followed immediately by permanent flood. Delaying permanent flood until panicle initiation resulted in approximately 23% saving in total water use. Weekly irrigation throughout the season produced low vegetative growth and grain yields.
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 5
Claim · model-written summary
Weekly irrigation before panicle initiation severely restricted dry matter.
- Taxon
- rice
Oryza sativat0 - Treatment
- weekly irrigations before panicle initiatione0
- Outcome
- dry matter productione0
- Direction
- restrictede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth under weekly irrigations before panicle initiation severely restricted dry matter production”
t0“rice”
Claim · model-written summary
Split nitrogen and permanent flooding at panicle initiation yielded 8.67 t/ha.
- Taxon
- riceOryza sativat0
- Treatment
- nitrogen (90 kg N/ha) was split with 45 kg N/ha at the three-leaf stage and 45 kg N/ha at panicle initiation followed by permanent flood at panicle initiatione0
- Outcome
- yielde0
- Value
- 8.67 t/hae0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When nitrogen (90 kg N/ha) was split with 45 kg N/ha at the three-leaf stage and 45 kg N/ha at panicle initiation followed by permanent flood at panicle initiation, yield was 8.67 t/ha”
t0“rice”
Claim · model-written summary
Split nitrogen with delayed permanent flood produced yield equivalent to conventional practice.
- Taxon
- riceOryza sativat0
- Treatment
- permanent floode0
- Outcome
- yieldse0
- Direction
- equivalente0
- Comparator
- conventional practicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This was equivalent to yields obtained from conventional practice where all fertilizer was applied at the three-leaf stage followed immediately by permanent flood”
t0“rice”
Claim · model-written summary
Delaying permanent flood saved approximately 23% of water use.
- Taxon
- riceOryza sativat0
- Treatment
- Delaying permanent flood until panicle initiatione0
- Outcome
- total water usee0
- Direction
- savinge0
- Value
- 23%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delaying permanent flood until panicle initiation resulted in approximately 23% saving in total water use”
t0“rice”
Claim · model-written summary
Weekly irrigation throughout the season produced low vegetative growth and grain yield.
- Taxon
- riceOryza sativat0
- Treatment
- Weekly irrigation throughout the seasone0
- Outcome
- vegetative growth and grain yieldse0
- Direction
- lowe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weekly irrigation throughout the season produced low vegetative growth and grain yields”
t0“rice”
The same questions in other papers
flooding · physiology: water · Oryza sativa (rice)Positive and negative results
23 papers in the same direction as this paper · 12 in the opposite direction
- positive
- negative
- negative
32 papers more in this group
See all 36 papers →climate site · yield · Oryza sativa (rice)Positive and negative results
61 papers in the same direction as this paper · 110 in the opposite direction
- positive
- positive
- positive
168 papers more in this group
See all 172 papers →flooding · yield · Oryza sativa (rice)Positive and negative results
192 papers in the same direction as this paper · 82 in the opposite direction · 11 reporting no difference from an alternative
- no effect
- positive
- negative
282 papers more in this group
See all 286 papers →irrigation · yield · Oryza sativa (rice)Positive and negative results
264 papers in the same direction as this paper · 906 in the opposite direction
- negative
- positive
- positive
1,167 papers more in this group
See all 1,171 papers →nitrogen · yield · Oryza sativa (rice)Positive and negative results
1,802 papers in the same direction as this paper · 193 in the opposite direction · 49 reporting no difference from an alternative
- no effect
- negative
- negative
2,041 papers more in this group
See all 2,045 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.